 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Impala Linear Corporation ILC6375 1 Amp SOT-89 Step Down PWM Switcher Controller General Description The ILC6375 is a high efficiency step-down DC-DC controller using a PWM control scheme. The typical efficiency can be as high as 85% to 90% at 10mA to 1 Amp load. The ILC6375 drives an external switching transistor to deliver up to 1 Amp of output current. The internal oscillator operates at a fixed 100kHz frequency. Meanwhile, the device is capable of 100% duty cycle thus allowing true low drop-out operation to maximize battery life in portable applications. Output voltage is trimmed to 2.5% accuracy. The device includes internal phase compensation and softstart circuitry. Available in a tiny SOT-89 package, the ILC6375 requires an external PNP switching transisitor, an inductor, a shottky diode and capacitors. Features ! ! ! ! ! ! ! ! Up to 1 Amp output current 85% to 90% efficiency at 0.5A to1A (VIN = 7V, VOUT = 5V) 85% efficiency at 10mA (VIN = 7V, VOUT = 5V) 100% Duty Cycle for ultra low drop-out 100kHz 15% internal oscillator 10V(max) input voltage 2.5% precision output Tiny SOT-89 package Applications ! ! ! ! ! Cellular Phones Palmtop PCs and PDAs Portable instrumentation Digital cameras High efficiency 5V to 3.3V converter Block Diagram V DD VI N Slow Start Vre f P WM Co ntrol led BUFFE R OSC 100kHz P WM comp V OUT ILC6375CP-33 ILC6375CP-50 Ordering Information* 3.3V+2.5% @100kHz external xtor 5.5V+2.5% @100kHz external xtor * Standard product offering comes in tape & reel, quantity 1000 per reel, orientation right for SOT-89 EXT + - Typical Application L Tr 3 2 1 Pin Package Configuration GN D V OUT 5V/1A 5 EXT 4 SOT -89-5 (TOP V IEW) 1 2 3 CI N VI N ( 10V ) + RB 4 ILC6375 5 SD + N/C CL V IN VO UT ILC6375 GND Impala Linear Corporation ILC6375 1.1 (408) 574-3939 www.impalalinear.com June 1999 1 1 Amp SOT-89 Step Down PWM Switcher Controller Absolute Maximum Ratings (TA = 25C) Parameter Input Voltage Voltage on VOUT pin Voltage on pin EXT Current on pin EXT Continuous Total Power Dissipation Operating Ambient Temperature Storage Temperatures Symbol VIN VOUT VEXT IEXT PD TA TSTG Ratings 12 12 -0.3 to VIN + 0.3 +50 500 -30 to +80 -40 to+125 Units V V V mA mW C C Electrical Characteristics ILC6375CP-50 VOUT = 5.0V FOSC = 100kHz TA = 25 C, unless otherwise specified, VIN = 6V, IOUT = 100mA, See test circuit, figure 1. o Parameter Output Voltage Input Voltage Supply Current 1 Supply Current 2 EXT "High" ON Resistance EXT "Low" ON Resistance Oscillator Frequency Maximum Duty Ratio Efficiency Soft-Start Time Symbol VOUT VIN IDD 1 IDD 2 REXTH REXTL FOSC MAXDTY EFFI TSS Conditions Min 4.875 Typ 5.000 25 20 38 30 4.75V applied to VOUT with no external components 5.5V applied to VOUT with no external components 5.5V applied to VOUT with no external components, VEXT =4.6V 4.75V applied to VOUT with no external components, VEXT =0.4V Measure Frequency at EXT pin Measure Duty Cycle at EXT pin Max 5.125 10 42 34 63 50 115 Units V V A A kHz % % ms 85 100 100 90 10 Impala Linear Corporation ILC6375 1.1 (408) 574-3939 www.impalalinear.com June 1999 2 1 Amp SOT-89 Step Down PWM Switcher Controller Electrical Characteristics ILC6375CP-33 VOUT = 3.3V FOSC = 100kHz TA = 25 C,unless otherwise specified, VIN = 4V, I o OUT = 55mA, See test circuit, figure 1. Parameter Output Voltage Input Voltage Supply Current 1 Supply Current 2 EXT "High" ON Resistance EXT "Low" ON Resistance Oscillator Frequency Maximum Duty Ratio Efficiency Soft Start Time Symbol VOUT VIN IDD 1 IDD 2 REXTH REXTL FOSC MAXDTY EFFI TSS Conditions Min 3.218 Typ 3.300 20 16 57 46 3V applied to VOUT with no external components 3.6V applied to VOUT with no external components 3.6V applied to VOUT with no external components,VEXT = 3.6V 3V applied to VOUT with no external components, VEXT = 0.4V Measure Frequency at EXT pin Measure Duty Cycle at EXT pin Max 3.383 10 33 27 95 76 115 Units V V A A kHz % % ms 85 100 100 90 10 Applications Circuits L Tr 3 2 1 V OU T ( 5V ) CI N VI N ( 5V to 10V ) + RB 4 ILC6375 5 SD + CL GND Figure 1: ILC6375 Typical Application L: SD: CIN: C L: Tr: RB 100mH (SUMIDA CD-54) Shottkey Diode (MATSUSHITA MA735 10mF/16V Tantalum Capacitor (NICHICON F93) 47mF/10V Tantalum Capacitor (NICHICON F93) PNP Transistor (TOSHIBA 2SA1213) 1k Impala Linear Corporation ILC6375 1.1 (408) 574-3939 www.impalalinear.com June 1999 3 1 Amp SOT-89 Step Down PWM Switcher Controller Electrical Characteristics ILC6375CP-33 L = 100kHz CL = 47F3.3V FOSC TA = 25 C, unless otherwise specified, VIN = 4V, IOUT = 55mA, See test circuit, figure 1. o Output Voltage vs Output Curre nt ILC6375CP-50 5 .2 Output Voltage vs Output C urrent 8.0V 10.0V V IN = 7.0V OUTPUT VOLTAGE VOU T (V) 5.2 IL C6375CP-50 5.1V 5 .0 OUTPUT VOLTA GE VO UT (V) 5.0 4 .8 VI N =5.0V 4.8 4 .6 4.6 VI N =5.0V 4.4 4.4 4. 2 4.2 4.0 0 1 10 100 1000 4.0 0 1 10 100 1000 OUTPUT CUR RENT IO UT (mA) OUTPUT CURRENT IO UT (mA) Efficiency vs Output C urrent 10 0 Output Ripple Voltage vs Output Current IL C6375CP-50 100 ILC6375CP-50 Vin =7.0V 80 80 60 Vin= 5.5V Vin = 10.0V RIPPLE (mVP-P) 60 EFFICIEN CY ( % ) Vin =8.0V 40 40 Vin =7.0V Vin=5.5V 20 20 0 0 1 10 100 1000 0 0 1 10 100 1000 OUTPUT CUR RENT IO UT (mA) OUTPUT CURR ENT IO UT (mA) Ef ficie ncy vs Output Curr ent ILC6375CP-33 10 0 Output R ipple Volta ge vs Output C ur rent ILC6375CP-33 100 Vin =5.0V Vin =4V 80 80 60 RIP PLE (mVP-P) 60 EFFICIENCY ( % ) Vin = 7.0V 40 Vin=7.0V 40 Vin=5.0V Vin=4V 20 20 0 0 1 10 10 0 1000 0 0 1 10 100 1000 OU TPU T CURRENT I OUT (mA) OU TPU T CURRENT I OUT (mA) Impala Linear Corporation ILC6375 1.1 (408) 574-3939 www.impalalinear.com June 1999 4 |
Price & Availability of ILC6375
 |
|
|
|
|
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] |