![]() |
|
If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
Datasheet File OCR Text: |
POWER MANAGEMENT Supervisors IMP1810 -- Lo w Po w er, 5V P R eset Active LOW, Push-Pull Output IMP1811 -- Lo w Po w er, 5V P R eset Active LOW, Open-Drain Output IMP181 2 -- Lo w Po w er, 5V P R eset Active HIGH, Push-Pull Output IMP1815 -- Lo w Po w er, 3.3V P R eset Active LOW, Push-Pull Output IMP1816 -- Lo w Po w er, 3.3V P R eset Active LOW, Open-Drain Output IMP1817 -- Lo w Po w er, 3.3V P R eset Active HIGH, Push-Pull Output IMP1 233D -- Lo w Po w er, 5V P R eset Active LOW, Open-Drain Output IMP1 233M -- Lo w Po w er, 5V/3.3 P R eset Active LOW, Open-Drain Output 408-432-9100/www.impweb.com P Super visor Cr oss R ef er ence P Supervisor Products: Low Power Alternatives to Dallas Semiconductor IMP Ordering Part Number IMP1810-5 IMP1810-10 IMP1810-15 IMP1810R-5 IMP1810R-10 IMP1810R-15 IMP1811-5 IMP1811-10 IMP1811-15 IMP1811R-5 IMP1811R-10 IMP1811R-15 IMP1812-5 IMP1812-10 IMP1812-15 IMP1812R-5 IMP1812R-10 IMP1812R-15 IMP1815-5 IMP1815-10 IMP1815-20 IMP1815R-5 IMP1815R-10 IMP1815R-20 IMP1816-5 IMP1816-10 IMP1816-20 IMP1816R-5 IMP1816R-10 IMP1816R-20 IMP1817-5 IMP1817-10 IMP1817-20 IMP1817R-5 IMP1817R-10 IMP1817R-20 IMP1233D-5 IMP1233D-10 IMP1233D-15 IMP1233DZ-5 IMP1233DZ-10 IMP1233DZ-15 IMP1233M-55 IMP1233M-5 IMP1233M-3 IMP1233MS-55 IMP1233MS-5 IMP1233MS-3 RESET Voltage (V) 4.620 4.370 4.120 4.620 4.370 4.120 4.620 4.370 4.120 4.620 4.350 4.130 4.620 4.350 4.130 4.620 4.350 4.130 3.060 2.880 2.550 3.060 2.880 2.550 3.060 2.880 2.550 3.060 2.880 2.550 3.060 2.880 2.550 3.060 2.880 2.550 4.625 4.375 4.125 4.625 4.375 4.125 4.625 4.375 2.720 4.625 4.375 2.720 RESET Tolerance (%) 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 15 5 10 20 5 10 20 5 10 20 5 10 20 5 10 20 5 10 20 5 10 15 5 10 15 5 10 15 5 10 15 RESET Time (ms) 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 350 350 350 350 350 350 350 350 350 350 350 350 RESET Polarity LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW HIGH HIGH HIGH HIGH HIGH HIGH LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW LOW Push-Pull Output Stage X X X X X X Open Drain Output 8-Pin SO Package TO-92 Package X X X SOT-23 Package SOT-223 Package X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X ELD/B_t07 X X X X X X X X X X X X X X X X X X X X X X X X X X X 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 1 0 POWER MANAGEMENT Low Power, 5V P Reset Key Features x Improved Dallas DS1810 replacement -- 50% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) x Automatically restarts a microprocessor after power failure x 150ms reset delay after VCC returns to an in-tolerance condition x Active LOW power-up reset x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Low-cost TO-92 package x Compact surface mount SOT-23 package x Push-Pull output for minimum current drain x Operating temperature - 40C to +85C - Active LOW, Push-Pull Output The IMP1810 supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1810. Maximum supply current over temperature is a low 20A, representing 50 percent lower power as compared to the DS1810. The IMP1810 issues an active LOW reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5-, 10- and 15-percent. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 150ms to allow the power supply and system microprocessor to stabilize. The IMP1810 is designed with a push-pull output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SOT-23 packages and 3-lead TO-92 packages. Other low power products in this family include the IMP1811/12/15/16/17, IMP1233D and IMP1233M. Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M Applications Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC 1 VCC Supply Tolerence Bias Typical Application IMP1810 IMP1810 + - Delay 150ms Typical Microprocessor 2 RESET RESET RESET Reference 3 GND (c) 1999 IMP, Inc. 1810_01.eps GND 1810_02.eps 408-432-9100/www.impweb.com 1 IMP18 1 0 Pin Configuration SOT23 RESET 1 IMP1810-X 3 GND TO-92* IMP1810-X VCC 2 1 1810_03.eps 2 3 1810_04.eps Pin Descriptions Pin Number 1 2 3 Name RESET VCC GND Function Active LOW reset output Power supply input Ground Package Marking Code SOT-23 Package Letter Code A 8 Part Type IMP1810 SOT-23 Package Letter Code D A B C 3 Reset Tolerance 5% 10% 15% 1810_t02.eps B 1 C 0 A 1 B C D 2 1810_05a.eps Ordering Information Device Summary Part** Number IMP1810-5 IMP1810-10 IMP1810-15 IMP1810R-5 IMP1810R-10 IMP1810R-15 RESET RESET RESET Push-Pull Output TO-92* SO -23 r ime Output Package PacTage Voltage Tole%ance Tms) k () ( Stage (V) 4.62 4.37 4.12 4.62 4.37 4.12 5 10 15 5 10 15 150 150 150 150 150 150 X X X X X X X X X X X X RESET Polarity LOW LOW LOW LOW LOW LOW Package Marking D A B C A = 5% B = 10% C = 15% 8 8 8 1 1 1 0 0 0 A B C 1810_t3.eps * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Add /T to Part Number for Tape and Reel. (ie. IMP18xx-x/T) 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 10 Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Output Current Operating Current VCC Trip Point (IMP1810-5) VCC Trip Point (IMP1810-10) VCC Trip Point (IMP1810-15) Output Capacitance VCC Detect to RESET Low VCC Slew Rate (VCCTP (MAX) to VCCTP (MIN)) VCC Slew Rate (VCCTP (MIN) to VCCTP (MAX)) VCC Detect to RESET High Symbol VCC VOH IOH IOL ICC VCCTP VCCTP VCCTP C OUT t RPD tF tR t RPU Conditions IOUT < 500A Output = 2.4V, VCC 2.7V Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open Min 1.2 VCC - 0.5V +10 Typ VCC - 0.1V 350 8 Max 5.5 Units V V A mA 20 4.75 4.49 4.24 10 5 A V V V pF s s ns 4.50 4.25 4.00 4.62 4.37 4.12 2 300 0 t r = 5s 100 150 300 ms Notes 1. The tF value is for reference in defining values for tRPD and should not be considered a requirement for proper operation or use. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP18 1 0 Application Information Operation - Power Monitor The DS1810 detects out-of-tolerance power supply conditions. It resets a processor during power-up, power-down and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (LOW) for approximately 150ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. Output Conditions The IMP1810 active LOW reset signal is valid as long as VCC remains above 1.2V. The RESET output on the IMP1810 uses a push-pull drive stage that can maintain a valid output below 1.2V. To sink current with VCC below 1.2V, a resistor can be connected from the reset pin (RESET) to Ground (see Figure 1). This configuration will give a valid value on the RESET output with VCC approaching 0V. During both power up and down, this configuration will draw current when RESET is in the high state. A value of 100k should be adequate to maintain a valid condition. tR VCCTP (MAX) VCCTP VCCTP (MIN) IMP1810 Microprocessor RESET 100k RESET 1810_06.eps 1810_07.eps VCC tRPU VOH RESET Figure 1. RESET Valid to 0V VCC Figure 2. Timing Diagram: Power-Up tF VCC VCCTP (MAX) VCCTP VCCTP (MIN) tRPD RESET VOL 1810_08.eps Figure 3. Timing Diagram: Power-Down 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 1 1 POWER MANAGEMENT Low Power, 5V P Reset Key Features x Improved Dallas DS1811 replacement -- 50% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) x Automatically restarts a microprocessor after power failure x 150ms reset delay after VCC returns to an in-tolerance condition x Active LOW power-up reset x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Low-cost TO-92 package x Compact surface mount SOT-23 package x Operating temperature - 40C to +85C - Active LOW, Open-Drain Output The IMP1811 supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1811. Maximum supply current over temperature is a low 20A, representing 50 percent lower power as compared to the DS1811. The IMP1811 issues an active LOW reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5-, 10- and 15-percent. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 150ms to allow the power supply and system microprocessor to stabilize. The IMP1811 is designed with a open-drain output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SOT-23 packages and 3-lead TO-92 packages. Other low power products in this family include the IMP1810/12/15/16/17, IMP1233D and IMP1233M. Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M Applications Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC 1 VCC Supply Tolerence Bias Typical Application IMP1811 + - Delay 150ms Typical 5.5k 2 IMP1811 RESET RESET Microprocessor RESET Reference 3 GND (c) 1999 IMP, Inc. GND 1811_02.eps 1811_01.eps 408-432-9100/www.impweb.com 1 IMP18 1 1 Pin Configuration SOT23 RESET 1 IMP1811-X 3 GND TO-92* IMP1811-X VCC 2 1811_03.eps 1 2 3 1811_04.eps Pin Descriptions Pin Number 1 2 3 Name RESET VCC GND Function Active LOW reset output Power supply input Ground Package Marking Code SOT-23 Package Letter Code A 8 Part Type IMP1811 SOT-23 Package Letter Code D A B C Reset Tolerance A 5% 10% 15% 1811_t02.eps 3 B 1 C 1 B C D 2 1811_05a.eps 1 Ordering Information Package Marking D RESET RESET RESET Open-Drain** Part*** Output TO-92* SOT-23 RESET A = 5% r ime Output Number Voltage Tole%ance Tms) Package Package Polarity A B C B = 10% () ( Stage (V) C = 15% IMP1811-5 IMP1811-10 IMP1811-15 IMP1811R-5 IMP1811R-10 IMP1811R-15 4.62 4.37 4.12 4.62 4.37 4.12 5 10 15 5 10 15 150 150 150 150 150 150 X X X X X X X X X X X X LOW LOW LOW LOW LOW LOW 8 8 8 1 1 1 1 1 1 A B C 1811_t3.eps Device Summary * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Internal 5.5k resistor pull up. *** Add /T to Part Number for Tape and Reel. (ie. IMP18xx-x/T) 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 1 1 Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Operating Current VCC Trip Point (IMP1811-5) VCC Trip Point (IMP1811-10) VCC Trip Point (IMP1811-15) Internal Pull-Up Resistor Output Capacitance RESET Active Time VCC Detect to RESET Low VCC Slew Rate (VCCTP (MAX) to VCCTP (MIN)) VCC Slew Rate (VCCTP (MIN) to VCCTP (MAX)) VCC Detect to RESET High Symbol VCC VOH IOL ICC VCCTP VCCTP VCCTP RP C OUT t RESET t RPD tF tR t RPU Conditions IOUT < 500A Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open Min 1.2 VCC - 0.5V +10 Typ VCC - 0.1V 8 Max 5.5 Units V V mA 20 4.75 4.49 4.24 7.5 10 250 5 A V V V k pF ms s s ns 4.50 4.25 4.00 3.5 100 300 0 t r = 5s 100 4.62 4.37 4.12 5.5 150 2 150 300 ms Notes 1. The tF value is for reference in defining values for tRPD and should not be considered a requirement for proper operation or use. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP18 1 1 Application Information Operation - Power Monitor The IMP1811 detects out-of-tolerance power supply conditions. It resets a processor during power-up, power-down and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (LOW) for approximately 150ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. tF VCC VCCTP (MAX) VCCTP VCCTP (MIN) tRPD RESET tR VCCTP (MAX) VCCTP VOL 1811_08.eps VCCTP (MIN) VCC tRPU VOH RESET 1811_07.eps Figure 2. Timing Diagram: Power-Down Figure 1. Timing Diagram: Power-Up 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 1 2 POWER MANAGEMENT Low Power, 5V P Reset Key Features x Improved Dallas DS1812 replacement -- Over 50% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) x Automatically restarts a microprocessor after power failure x 150ms reset delay after VCC returns to an in-tolerance condition x Active HIGH power-up reset x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Low-cost TO-92 package x Compact surface mount SOT-23 package x Push-Pull output for minimum current drain x Operating temperature - 40C to +85C - Active HIGH, Push-Pull Output The IMP1812 supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1812. Maximum supply current over temperature is a low 20A, representing over 50 percent lower power as compared to the DS1812. The IMP1812 issues an active HIGH reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5-, 10- and 15-percent. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active HIGH reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 150ms to allow the power supply and system microprocessor to stabilize. The IMP1812 is designed with a push-pull output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SOT-23 packages and 3-lead TO-92 packages. Other low power products in this family include the IMP1810/11/15/16/17, IMP1233D and IMP1233M. Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW Applications x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC 1 VCC Supply Tolerence Bias Typical Application IMP1812 IMP1812 + - Microprocessor Delay 150ms Typical 2 RESET RESET RESET Reference 3 GND (c) 1999 IMP, Inc. GND 1812_02.eps 1812_01.eps 408-432-9100/www.impweb.com 1 IMP1 8 1 2 Pin Configuration SOT23 RESET 1 IMP1812-X 3 GND TO-92* IMP1812-X VCC 2 1812_03.eps 1 2 3 1812_04.eps Pin Descriptions Pin Number 1 2 3 Name RESET VCC GND Function Active HIGH reset output Power supply input Ground Package Marking Code SOT-23 Package Letter Code A 8 Part Type IMP1812 SOT-23 Package Letter Code D A B C Reset Tolerance 5% 10% 15% 1812_t02.eps 3 B 1 C 2 A 1 B C D 2 1812_05a.eps Ordering Information Device Summary Part** Number IMP1812-5 IMP1812-10 IMP1812-15 IMP1812R-5 IMP1812R-10 IMP1812R-15 RESET RESET RESET Push-Pull Output TO-92* SO -23 r ime Output Package PacTage Voltage Tole%ance Tms) k () ( Stage (V) 4.62 4.37 4.12 4.62 4.37 4.12 5 10 15 5 10 15 150 150 150 150 150 150 X X X X X X X X X X X X RESET Polarity HIGH HIGH HIGH HIGH HIGH HIGH Package Marking D A B C A = 5% B = 10% C = 15% 8 8 8 1 1 1 2 2 2 A B C 1812_t3.eps * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Add /T to Part Number for Tape and Reel. (ie. IMP18xx-x/T) 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 1 2 Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Output Current Operating Current VCC Trip Point (IMP1812-5) VCC Trip Point (IMP1812-10) VCC Trip Point (IMP1812-15) Output Capacitance RESET Active Time VCC Detect to RESET Low VCC Slew Rate (VCCTP (MAX) to VCCTP (MIN)) VCC Slew Rate (VCCTP (MIN) to VCCTP (MAX)) VCC Detect to RESET High Symbol VCC VOH IOH IOL ICC VCCTP VCCTP VCCTP C OUT t RESET t RPD tF tR t RPU Conditions IOUT < 500A Output = 2.4V, VCC 2.7V Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open Min 1.2 VCC - 0.5V +10 Typ VCC - 0.1V 350 8 Max 5.5 Units V V A mA 20 4.75 4.49 4.24 10 250 5 A V V V pF ms s s ns 4.50 4.25 4.00 100 300 0 t R = 5s 100 4.62 4.37 4.12 150 2 150 300 ms Notes 1. The tF value is for reference in defining values for tRPD and should not be considered a requirement for proper operation or use. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP1 8 1 2 Application Information Operation - Power Monitor The IMP1812 detects out-of-tolerance power supply conditions. It resets a processor during power-up, power-down and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (HIGH) for approximately 150ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. tF VCC VCCTP (MAX) VCCTP VCCTP (MIN) tRPD VOH RESET Slews with VCC RESET 1812_07.eps tR VCCTP (MAX) VCCTP VCCTP (MIN) Figure 2. Timing Diagram: Power-Down VIN tRPU RESET VOL 1812_06.eps Figure 1. Timing Diagram: Power-Up 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 1 5 POWER MANAGEMENT Low Power, 3.3V P Reset - Active LOW, Push-Pull Output The IMP1815 supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1815. Maximum supply current over temperature is a low 15A, representing over 50 percent lower power as compared to the DS1815. The IMP1815 issues an active LOW reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5-, 10- and 20-percent. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 150ms to allow the power supply and system microprocessor to stabilize. The IMP1815 is designed with a push-pull output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SOT-23 packages and 3-lead TO-92 packages. Other low power products in this family include the IMP1810/11/12/16/17, IMP1233D and IMP1233M. Key Features x Improved Dallas DS1815 replacement -- Over 50% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) -- 15A maximum (3.6V) x Automatically restarts a microprocessor after power failure x 150ms reset delay after VCC returns to an in-tolerance condition x Active LOW power-up reset x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Low-cost TO-92 package x Compact surface mount SOT-23 package x Push-Pull output for minimum current drain x Operating temperature - 40C to +85C Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW Applications x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC 1 VCC Supply Tolerence Bias Typical Application IMP1815 IMP1815 + - Delay 150ms Typical Microprocessor 2 RESET RESET RESET Reference 3 GND (c) 1999 IMP, Inc. GND 1815_02.eps 1815_01.eps 408-432-9100/www.impweb.com 1 IMP18 1 5 Pin Configuration SOT23 RESET 1 IMP1815-X 3 GND TO-92* IMP1815-X VCC 2 1815_03.eps 1 2 3 1815_04.eps Pin Descriptions Pin Number 1 2 3 Name RESET VCC GND Function Active LOW reset output Power supply input Ground Package Marking Code SOT-23 Package Letter Code A 8 Part Type IMP1815 SOT-23 Package Letter Code D A B D Reset Tolerance 5% 10% 20% 1815_t02.eps 3 B 1 C 5 A 1 B C D 2 1815_05a.eps Ordering Information Device Summary Part** Number IMP1815-5 IMP1815-10 IMP1815-20 IMP1815R-5 IMP1815R-10 IMP1815R-20 RESET RESET RESET Push-Pull Output TO-92* SO -23 r ime Output Package PacTage Voltage Tole%ance Tms) k () ( Stage (V) 3.06 2.88 2.55 3.06 2.88 2.55 5 10 20 5 10 20 150 150 150 150 150 150 X X X X X X X X X X X X RESET Polarity LOW LOW LOW LOW LOW LOW Package Marking D A B C A = 5% B = 10% D = 20% 8 8 8 1 1 1 5 5 5 A B D 1815_t3.eps * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Add /T to Part Number for Tape and Reel. (ie. IMP18xx-x/T) 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 1 5 Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Output Current Operating Current Operating Current VCC Trip Point (IMP1815-5) VCC Trip Point (IMP1815-10) VCC Trip Point (IMP1815-20) Output Capacitance VCC Detect to RESET VCC Slew Rate (VCCTP (MAX) to VCCTP (MIN)) VCC Slew Rate (VCCTP (MIN) to VCCTP (MAX)) VCC Detect to RESET Symbol VCC VOH IOH IOL ICC ICC VCCTP VCCTP VCCTP C OUT t RPD tF tR t RPU Conditions IOUT < 500A Output = 2.4V, VCC 2.7V Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open VCC 3.6V, RESET output open Min 1.2 VCC - 0.5V +10 Typ VCC - 0.1V 350 8 6 Max 5.5 Units V V A mA 20 15 3.15 2.97 2.64 10 5 A A V V V pF s s ns 2.98 2.80 2.47 3.06 2.88 2.55 2 Note 1 300 0 t R = 5s 100 150 250 ms Notes 1. The tF value is for reference in defining values for tRPD and should not be considered a requirement for proper operation or use. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP18 1 5 Application Information Operation - Power Monitor The IMP1815 detects out-of-tolerance power supply conditions. It resets a processor during power-up, power-down and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (LOW) for approximately 150ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. Output Conditions The IMP1815 active LOW reset signal is valid as long as VCC remains above 1.2V. The RESET output on the IMP1815 uses a push-pull drive stage that can maintain a valid output below 1.2V. To sink current with VCC below 1.2V, a resistor can be connected from the reset pin (RESET) to Ground (see Figure 1). This configuration will give a valid value on the RESET output with VCC approaching 0V. During both power up and down, this configuration will draw current when RESET is in the high state. A value of 100k should be adequate to maintain a valid condition. tR VCCTP (MAX) VCCTP VCCTP (MIN) IMP1815 Microprocessor RESET 100k RESET 1815_06.eps 1815_07.eps VCC tRPU VOH RESET Figure 1. RESET Valid to 0V VCC Figure 2. Timing Diagram: Power-Up tF VCC VCCTP (MAX) VCCTP VCCTP (MIN) tRPD RESET VOL 1815_08.eps Figure 3. Timing Diagram: Power-Down 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 16 POWER MANAGEMENT Low Power, 3.3V P Reset Key Features x Improved Dallas DS1816 replacement -- Over 70% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) -- 15A maximum (3.6V) x Automatically restarts a microprocessor after power failure x 150ms reset delay after VCC returns to an in-tolerance condition x Active LOW power-up reset x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Low-cost TO-92 package x Compact surface mount SOT-23 package x Operating temperature - 40C to +85C - Active LOW, Open-Drain Output The IMP1816 supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1816. Maximum supply current over temperature is a low 15A, representing over 50 percent lower power as compared to the DS1816. The IMP1816 issues an active LOW reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5-, 10- and 20-percent. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 150ms to allow the power supply and system microprocessor to stabilize. The IMP1816 is designed with a open-drain output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SOT-23 packages and 3-lead TO-92 packages. Other low power products in this family include the IMP1810/11/12/15/17, IMP1233D and IMP1233M. Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M Applications Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC 1 VCC Supply Tolerence Bias Typical Application IMP1816 + - Delay 150ms Typical 5.5k 2 IMP1816 RESET RESET Microprocessor RESET Reference 3 GND (c) 1999 IMP, Inc. GND 1816_02.eps 1816_01.eps 408-432-9100/www.impweb.com 1 IMP18 16 Pin Configuration SOT23 RESET 1 IMP1816-X 3 GND TO-92* IMP1816-X VCC 2 1816_03.eps 1 2 3 1816_04.eps Pin Descriptions Pin Number 1 2 3 Name RESET VCC GND Function Active LOW reset output Power supply input Ground Package Marking Code SOT-23 Package Letter Code A 8 Part Type IMP1816 SOT-23 Package Letter Code D A B D Reset Tolerance 5% 10% 20% 1815_t02.eps 3 B 1 C 6 A 1 B C D 2 1816_05a.eps Ordering Information Package Marking D RESET SET - ai Part*** Output TRlErance RESET OpenuDrut n** TO-92* SOT-23 RESET A B C A = 5% Time O tp Number Voltage o e%) Package Package Polarity B = 10% ( (ms) Stage (V) D = 20% IMP1816-5 IMP1816-10 IMP1816-20 IMP1816R-5 IMP1816R-10 IMP1816R-20 3.06 2.88 2.55 3.06 2.88 2.55 5 10 20 5 10 20 150 150 150 150 150 150 X X X X X X X X X X X X LOW LOW LOW LOW LOW LOW 8 8 8 1 1 1 6 6 6 A B D 1816_t3.eps Device Summary * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Internal 5.5k resistor pull up. *** Add /T to Part Number for Tape and Reel. (ie. IMP18xx-x/T) 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 16 Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Operating Current Operating Current VCC Trip Point (IMP1816-5) VCC Trip Point (IMP1816-10) VCC Trip Point (IMP1816-20) Internal Pull-Up Resistor Output Capacitance VCC Detect to RESET Low VCC Slew Rate (VCCTP (MAX) to VCCTP (MIN)) VCC Slew Rate (VCCTP (MIN) to VCCTP (MAX)) VCC Detect to RESET High Symbol VCC VOH IOL ICC ICC VCCTP VCCTP VCCTP RP C OUT t RPD tF tR t RPU Conditions IOUT < 500A Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open VCC 3.6V, RESET output open Min 1.2 VCC - 0.5V +10 Typ VCC - 0.1V 8 6 Max 5.5 Units V V mA 20 15 3.15 2.97 2.64 7.5 10 5 A A V V V k pF s s ns 2.98 2.80 2.47 3.5 3.06 2.88 2.55 5.5 2 Note 1 300 0 t R = 5s 100 150 250 ms Notes 1. The tF value is for reference in defining values for tRPD and should not be considered a requirement for proper operation or use. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP18 16 Application Information Operation - Power Monitor The IMP1816 detects out-of-tolerance power supply conditions. It resets a processor during power-up, power-down and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (LOW) for approximately 150ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. tF VCC VCCTP (MAX) VCCTP VCCTP (MIN) tRPD RESET tR VCCTP (MAX) VCCTP VOL 1816_07.eps VCCTP (MIN) VCC tRPU VOH RESET 1816_06.eps Figure 2. Timing Diagram: Power-Down Figure 1. Timing Diagram: Power-Up 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP18 17 POWER MANAGEMENT Low Power, 3.3V P Reset Key Features x Improved Dallas DS1817 replacement -- Over 50% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) -- 15A maximum (3.6V) x Automatically restarts a microprocessor after power failure x 150ms reset delay after VCC returns to an in-tolerance condition x Active HIGH power-up reset x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Low-cost TO-92 package x Compact surface mount SOT-23 package x Push-Pull output for minimum current drain x Operating temperature - 40C to +85C - Active HIGH, Push-Pull Output The IMP1817 supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1817. Maximum supply current over temperature is a low 15A, representing over 50 percent lower power as compared to the DS1817. The IMP1817 issues an active HIGH reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5-, 10- and 20-percent. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active HIGH reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 150ms to allow the power supply and system microprocessor to stabilize. The IMP1817 is designed with a push-pull output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SOT-23 packages and 3-lead TO-92 packages. Other low power products in this family include the IMP1810/11/12/15/16, IMP1233D and IMP1233M. Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW Applications x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC 1 VCC Supply Tolerence Bias Typical Application IMP1817 IMP1817 + Delay 150ms Microprocessor 2 RESET RESET RESET - Reference 3 GND (c) 1999 IMP, Inc. 1817_02.eps 1817_01.eps GND 408-432-9100/www.impweb.com 1 IMP18 17 Pin Configuration SOT23 RESET 1 IMP1817-X 3 GND TO-92* IMP1817-X VCC 2 1817_03.eps 1 2 3 1817_04.eps Pin Descriptions Pin Number 1 2 3 Name RESET VCC GND Function Active LOW reset output Power supply input Ground Package Marking Code SOT-23 Package Letter Code A 8 Part Type IMP1817 SOT-23 Package Letter Code D A B D 3 Reset Tolerance 5% 10% 20% 1817_t02.eps B 1 C 7 A 1 B C D 2 1817_05a.eps Ordering Information Device Summary Part** Number IMP1817-5 IMP1817-10 IMP1817-20 IMP1817R-5 IMP1817R-10 IMP1817R-20 RESET RESET RESET Push-Pull Output TO-92* SO -23 r ime Output Package PacTage Voltage Tole%ance Tms) k () ( Stage (V) 3.06 2.88 2.55 3.06 2.88 2.55 5 10 20 5 10 20 150 150 150 150 150 150 X X X X X X X X X X X X RESET Polarity LOW LOW LOW LOW LOW LOW Package Marking D A B C A = 5% B = 10% D = 20% 8 8 8 1 1 1 7 7 7 A B C 1817_t3.eps * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Add /T to Part Number for Tape and Reel. (ie. IMP18xx-x/T) 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP1 8 17 Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Output Current Operating Current Operating Current VCC Trip Point (IMP1817-5) VCC Trip Point (IMP1817-10) VCC Trip Point (IMP1817-20) Output Capacitance VCC Detect to RESET Low VCC Slew Rate (VCCTP (MAX) to VCCTP (MIN)) VCC Slew Rate (VCCTP (MIN) to VCCTP (MAX)) VCC Detect to RESET High Symbol VCC VOH IOH IOL ICC ICC VCCTP VCCTP VCCTP C OUT t RPD tF tR t RPU Conditions IOUT < 500A Output = 2.4V, VCC 2.7V Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open VCC 3.6V, RESET output open Min 1.2 VCC - 0.5V +10 Typ VCC - 0.1V 350 8 6 Max 5.5 Units V V A mA 20 15 3.15 2.97 2.64 10 5 A A V V V pF s s ns 2.98 2.80 2.47 3.06 2.88 2.55 2 Note 1 300 0 t R = 5s 100 150 250 ms Notes 1. The tF value is for reference in defining values for tRPD and should not be considered a requirement for proper operation or use. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP18 17 Application Information Operation - Power Monitor The IMP1817 detects out-of-tolerance power supply conditions. It resets a processor during power-up, power-down and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold. When an out-of-tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (HIGH) for approximately 150ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. tR VCCTP (MAX) VCCTP VCCTP (MIN) IMP1817 Microprocessor RESET RESET VIN tRPU RESET 1815_07.eps VOL 1817_07.eps Figure 1. RESET Valid to 0V VCC Figure 2. Timing Diagram: Power-Up tF VCC VCCTP (MAX) VCCTP VCCTP (MIN) tRPD VOH RESET Slews with VCC RESET 1817_08.eps Figure 3. Timing Diagram: Power-Down 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP1 233D POWER MANAGEMENT Low Power, 5V P Reset Key Features x Improved Dallas DS1233D replacement -- Over 60% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) -- 15A maximum (3.6V) x Automatically restarts a microprocessor after power failure x 350ms reset delay after VCC returns to an in-tolerance condition x Active LOW power-up reset, 5k internal pull-up x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Motorola 68xxx and HC16 compatible x Low-cost TO-92 package x Compact surface mount SOT-223 package x Operating temperature - 40C to +85C The IMP1233D supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1233D. Maximum supply current over temperature is a low 20A, representing over 60 percent lower power as compared to the DS1233D. The IMP1233D issues an active LOW reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5-, 10- and 15-percent. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 350ms to allow the power supply and system microprocessor to stabilize. The IMP1233D is designed with a open-drain output stage and operates over the extended industrial temperature range. Devices are available in compact surface mount SOT-223 packages and 3-lead TO-92 packages. Other low power products in this family include the IMP1810/11/12/15/ 16/17 and IMP1233M. - Active LOW, Open-Drain Output - 350ms Reset Period Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M Applications Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC VCC Supply Tolerence Bias Typical Application IMP1233D + - Delay 350ms Typical 5.0k IMP1233D RESET RESET Microprocessor RESET Reference GND GND (c) 1999 IMP, Inc. 1233D_02.eps 1233D_01.eps 408-432-9100/www.impweb.com 1 IMP1 233D Pin Configuration SOT-223 RESET 2 IMP1233D-X TO-92* IMP1233D-X GND 4 1 GND VCC 3 1233D_03.eps 1 2 3 1233D_04.eps Pin Descriptions Pin Numbers SOT-223 1 2 3 4 TO-92 1 2 3 -- Name GND RESET VCC GND Function Ground Active LOW reset output Power supply input Ground (SOT-223 Only) Package Marking Code 1 Package Letter Code A 3 B 3 C D Part Type IMP1233D Package Letter Code D A B C Reset Tolerance 5% 10% 15% A 2 B 4 C D 3 1233D_05a.eps Ordering Information Device Summary Part Number IMP1233D-5 IMP1233D-10 IMP1233D-15 IMP1233DZ-5 IMP1233DZ-10 IMP1233DZ-15 Package Marking D B A = 5% C B = 10% C = 15% RESET Output Voltage (V) 4.625 4.375 4.125 4.625 4.375 4.125 Output Stage RESET RESET TO-92* SOT-223** RESET *** Tolerance Time Open-Drain Push-Pull Package Package Polarity A (%) (ms) 5 10 15 5 10 15 350 350 350 350 350 350 X X X X X X X X X X X X LOW LOW LOW LOW LOW LOW 3 3 3 3 3 3 D D D A B C 1233D_t03.eps * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Add /T to Part Number for Tape and Reel. (ie. IMP18xx-x/T) *** Internal 5k resistor pull up. 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP1 233D Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Operating Current Operating Current VCC Trip Point (IMP1233D-5) VCC Trip Point (IMP1233D-10) VCC Trip Point (IMP1233D-15) Internal Pull-Up Resistor Output Capacitance RESET Active Time VCC Detect to RESET Low VCC Slew Rate (VHTL - VLTL) VCC Slew Rate (VLTL - VHTL) VCC Detect to RESET High Symbol VCC VOH IOL ICC ICC VCCTP VCCTP VCCTP RP C OUT t RESET t RPD tF tR t RPU Conditions IOUT < 500A Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open VCC 3.6V, RESET output open Min 1.2 VCC - 0.5V +8 Typ VCC - 0.1V 8 6 Max 5.5 Units V V mA 20 15 4.74 4.49 4.24 7.5 10 450 5 A A V V V k pF ms s s ns 4.50 4.25 4.00 3.5 250 300 0 t R = 5s 250 4.625 4.375 4.125 5.0 350 2 350 450 ms (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP1 233D Application Information Operation - Power Monitor The IMP1233D detects out-of-tolerance power supply conditions. It resets a processor during power-up and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold (power-down). When an out-of-tolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (LOW) for approximately 350ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. tR VCCTP (MAX) VCCTP VCCTP (MIN) VCC tRPU VOH RESET 1233D_06.eps Figure 1. Timing Diagram: Power-Up tF VCC VCCTP (MAX) VCCTP VCCTP (MIN) tRPD RESET VOL 1233D_07.eps Figure 2. Timing Diagram: Power-Down 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP1 233M POWER MANAGEMENT Low Power, 5V/3.3V P Reset Key Features x Improved Dallas DS1233M replacement -- 60% lower maximum supply current x Low Supply Current -- 20A maximum (5.5V) -- 15A maximum (3.6V) x Automatically restarts a microprocessor after power failure x 350ms reset delay after VCC returns to an in-tolerance condition x Active LOW power-up reset, 5k internal pull-up x Precision temperature-compensated voltage reference and comparator x Eliminates external components x Pin function compatible with the Motorola MC33064, MC34064, MC33164 and MC34164 x Motorola 68xxx and HC16 compatible x Low-cost TO-92 package x Compact surface mount SO-8 package x Operating temperature - 40C to +85C - Active LOW, Open-Drain Output - 350ms Reset Period The IMP1233M supply voltage monitor is an improved, low-power replacement for the Dallas Semiconductor DS1233M. Maximum supply current over temperature is a low 20A, representing 60 percent lower power as compared to the DS1233M. The IMP1233M issues an active LOW reset signal whenever the monitored supply is out-of-tolerance. A precision reference and comparator circuit monitor power supply (VCC) level. Tolerance level options are 5- and 10-percent for a 5V power supply. The tolerance is 15-percent for the 3.3V, IMP1233M. When an out-of-tolerance condition is detected, an internal power-fail signal is generated which forces an active LOW reset signal. After VCC returns to an in-tolerance condition, the reset signal remains active for 350ms to allow the power supply and system microprocessor to stabilize. The IMP1233M is designed with a open-drain output stage and operates over the extended industrial temperature range. Devices are available in the compact surface mount SO-8 package and a 3-lead TO-92 package. Other low power products in this family include the IMP1810/11/12/15/ 16/17 and IMP1233D. Family Selection Guide Part IMP1810 IMP1811 IMP1812 IMP1815 IMP1816 IMP1817 IMP1233D IMP1233M RESET Voltage RESET Time (V) (ms) 4.620, 4.370, 4.120 4.620, 4.370, 4.120 4.620, 4.350, 4.130 3.060, 2.880, 2.550 3.060, 2.880, 2.550 3.060, 2.880, 2.550 4.625, 4.375, 4.125 4.625, 4.375, 2.720 150 150 150 150 150 150 350 350 Output Stage Push-Pull Open-Drain Push-Pull Push-Pull Open-Drain Push-Pull Open-Drain Open-Drain RESET Polarity LOW LOW HIGH LOW LOW HIGH LOW LOW Applications x x x x x x x Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers Block Diagram VCC VCC Supply Tolerence Bias Typical Application IMP1233M + - Delay 350ms Typical 5.0k IMP1233M RESET RESET Microprocessor RESET Reference GND GND 1233M_02.eps 1233M_01.eps (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 1 IMP1 233M Pin Configuration SO-8 RESET VCC NC GND 1 2 3 4 IMP1233M 8 7 6 5 NC NC NC NC TO-92* IMP1233M-X 1233M_03.eps 1 2 3 1233M_04.eps Pin Descriptions Pin Numbers SO-8 1 2 3, 5, 6, 7 and 8 4 TO-92 1 2 -- 3 Name RESET VCC NC GND Function Active LOW reset output Power supply input No connection Ground Ordering Information Device Summary Part Number IMP1233M-55 IMP1233M-5 IMP1233M-3 IMP1233MS-55 IMP1233MS-5 IMP1233MS-3 RESET Output Voltage (V) 4.625 4.375 2.720 4.625 4.375 2.720 Output Stage RESET RESET TO-92* Tolerance Time Package (%) (ms) Open-Drain** Push-Pull 5 10 15 5 10 15 350 350 350 350 350 350 X X X X X X X X X SO-8 Package RESET Polarity LOW LOW LOW X X X LOW LOW LOW 1233M03 * Add /S to Part Number for straight (unformed) leads. (ie. IMP18xx-x/S) ** Internal 5k resistor pull up. 2 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. IMP1 233M Absolute Maximum Ratings Voltage on VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 6.5V Voltage on RESET . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC + 0.5V Operating Temperature Range . . . . . . . . . . . -40C to 85C Voltages measured with respect to ground. These are stress ratings only and functional operation is not implied. Soldering Temperature . . . . . . . . . . . . . . . . . . 260C for 10 seconds Storage Temperature . . . . . . . . . . . . . . . . . . . -55C to 125C Electrical Characteristics Unless otherwise noted, VCC = 1.2V to 5.5V and specifications are over the operating temperature range of - 40C to +85C. All voltages are referenced to ground. Parameter Supply Voltage Output Voltage Output Current Operating Current Operating Current VCC Trip Point (IMP1233M-5) VCC Trip Point (IMP1233M-55) VCC Trip Point (IMP1233M-3) Voltage High Trip Level IMP1233M-5 IMP1233M-55 Voltage Low Trip Level IMP1233M-5 IMP1233M-55 Voltage High Trip Level IMP1233M-3 Voltage Low Trip Level IMP1233M-3 Internal Pull-Up Resistor Output Capacitance VCC Detect to RESET Low VCC Slew Rate (VHTL - VLTL) VCC Slew Rate (VLTL - VHTL) VCC Detect to RESET High Symbol VCC VOH IOL ICC ICC VCCTP VCCTP VCCTP VHTL Conditions IOUT < 500A Output = 0.4V, VCC 2.7V VCC < 5.5V, RESET output open VCC 3.6V, RESET output open Min 1.2 VCC - 0.5V +8 Typ VCC - 0.1V 8 6 Max 5.5 Units V V mA 20 15 4.49 4.75 2.8 4.75 A A V V V V 4.25 4.5 2.64 4.375 4.625 2.72 VLTL 4.00 V VHTL VLTL RP C OUT t RPD tF tR t RPU t R = 5s 300 0 200 350 2 3.5 5.0 3.14 2.48 7.5 10 10 V V k pF s s ns 500 ms Notes: 1. A 1k external resistor maybe required in some applications for proper operation of the microprocessor reset control circuit. (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com 3 IMP1 233M Application Information Operation - Power Monitor The IMP1233M detects out-of-tolerance power supply conditions. It resets a processor during power-up and issues a reset to the system processor when the monitored power supply voltage is below the reset threshold (power-down). When an out-oftolerance VCC voltage is detected, the RESET signal is asserted. On power-up, RESET is kept active (LOW) for approximately 350ms after the power supply voltage has reached the selected tolerance. This allows the power supply and microprocessor to stabilize before RESET is released. tR VHTL VCCTP VLTL VCC tRPU VOH RESET 1233M_05.eps Figure 1. Timing Diagram: Power-Up tF VCC VHTL VCCTP VLTL tRPD RESET VOL 1233M_06.eps Figure 2. Timing Diagram: Power-Down 4 408-432-9100/www.impweb.com (c) 1999 IMP, Inc. P ac k ag e Inf or mation Package Dimensions Plastic SOT-23 (3-Pin) B Inches Min E H Millimeters Max Min Max Plastic SOT-23 (3-Pin) S D e A a A1 e1 C L SOT-23 (3-Pin).eps Plastic SOT-223 (4-Pin) B A A1 B C D E e e1 H L S A A1 B B1 C D e e1 E h S t Q Q1 Q2 A A1 B C e E H L D 0.031 0.050 0.004 0.010 0.015 0.020 0.003 0.007 0.110 0.120 0.047 0.055 0.035 0.040 0.070 0.080 0.083 0.1039 0.027 REF 0.018 0.024 0.067 0.060 0.004 0.0008 0.124 0.116 0.033 0.026 0.014 0.010 0.264 0.248 0.0905 NOM 0.181 NOM 0.146 0.130 0.287 0.264 0.041 0.033 0.051 0.043 10 MAX 16 10 16 10 0.053 0.004 0.013 0.007 0.050 0.150 0.228 0.016 0.189 0.157 0.244 0.050 0.197 0.069 0.010 0.020 0.010 0.80 1.27 0.10 0.25 0.37 0.51 0.085 0.18 2.80 3.04 1.20 1.40 0.89 1.03 1.78 2.05 2.10 2.64 0.069 REF 0.45 0.60 1.70 0.10 3.15 0.85 0.35 6.70 2.30 NOM 4.50 NOM 3.70 7.30 1.05 1.30 10 MAX 16 16 1.35 0.10 0.33 0.19 1.27 3.80 5.80 0.40 4.80 4.00 6.20 1.27 2.00 10 10 1.75 0.25 0.51 0.25 3.30 6.70 0.85 1.10 1.50 0.02 2.95 0.65 0.25 6.30 Plastic SOT-223** (4-Pin) E H S e Q1 Q B1 Q2 D A A1 e1 C SOT-223 (4-Pin).eps Plastic SO-8 (8-Pin) 0- 8 L E H Plastic SO-8 (8-Pin) C D A e B A1 SO (8-Pin).eps TO-92 (3-Pin) A TO-92* (3-Pin) A 0.175 0.195 4.45 4.95 B 0.170 0.192 4.32 4.96 C 0.500 0.610 12.70 15.49 D 0.016 0.022 0.406 0.559 E 0.095 0.105 2.41 2.67 F 0.045 0.60 1.14 1.52 G 0.45 0.060 1.14 1.52 H 0.085 0.095 2.16 2.41 I 0.130 0.155 3.30 3.94 J 0.014 0.020 0.35 0.51 K 0.093 0.115 2.36 2.92 L 45 60 45 60 M 0.118 Typical 3.00 * Formed leads are standard. Add /S to Part Number for straight leads. ** Add /T to Part Number for Tape and Reel. 18xx_t01.eps B M L Section A-A C D J Section A-A E K D F G 1 H 2 3 I Bottom View TO-92.eps (c) 1999 IMP, Inc. 408-432-9100/www.impweb.com IMP, Inc. Corporate Headquarters 2830 N. First Street San Jose, CA 95134-2071 Tel: 408-432-9100 Tel: 800-438-3722 Fax: 408-434-0335 Fax-on-Demand: 1-800-249-1614 (USA) Fax-on-Demand: 1-303-575-6156 (International) e-mail: info@impinc.com http://www.impweb.com The IMP logo is a registered trademark of IMP, Inc. All other company and product names are trademarks of their respective owners. (c) 1999 IMP, Inc. Printed in USA Part No.: IMP 18xx Document Number: IMP18xx-2-4/99 |
Price & Availability of IMP1815
![]() |
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
[Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |