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| Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 KB862 Microprocessor Reset circuits Features * * * * * * * * * * * Under-voltage monitor Super low consumption current(1.0uA typ) High precision detection voltage(2%) Operating range(0.7 - 10V) Wide operating temperature range(-30 to +85 C) Power-on reset generation (150ms Typ) Choice of threshold voltages (contact Kingbor regarding availability) Active-low reset output Rejects brief input transients Industry standard package and pinout 4-pin SC-82AB package General Description This system reset IC, developed using the CMOS process, has a built-in delay function. Super low consumption current of 1.0 A typ. has been achieved through use of the CMOS process. Also, detection voltage is high precision detection of 2%. Applications * Monitoring processor, ASIC, or FPGA core and I/O voltages * PDAs, hand-held PCs * Embedded controllers * Telecommunications systems * Power supplies * Wireless / Cellular systems * Networking hardware Ordering Information Part Number KB862-280 Marking 6K Typical Application Voltage* 3.3V 5% Nominal Threshold Voltage 2.8V TRST (ms) 150 Junction Temperature Range -30C to +85C Package SC-82AB Typical Application VDD Block Diagrams VDD VDD KB862 /MR C1 0.22uF /RESET VDD /RESET P /RESET GND /MR Typical Operating Circuit March 2007 1 KB862 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 KB862 Pin Configuration /RESET 4 KB862 /MR 3 6K 2 VDD 1 GND SC-82AB (TOP VIEW) Pin Description Pin Number 1 4 Pin Name GND /RESET Pin Function Ground return for all IC functions. Digital Output. Active-low. Asserted whenever VCC falls below the threshold voltage. It will remain asserted for no less than 150ms and be de-asserted after VDD returns above the threshold. Analog Input. Power supply input to the IC. Manual Reset Input. A logic low on /MR asserts reset. 2 3 V DD /MR 2 March 2007 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 KB862 Operating Ratings (Note 2) Ambient Temperature (TA) ......................... -30C to +85C Power Dissipation (TA = +70C) .............................. 320mW Absolute Maximum Ratings (Note 1) Terminal Voltage (VCC) ................................. -0.3V to 10V Lead Temperature (soldering, 10 sec.) ..................... 260C Storage Temperature (TS) ......................... -40C to 125C Rate of Rise (VCC) ................................................. 100V/s ESD Rating, Note 3 Electrical Characteristics TA = 25C; VCC = 3.3V for KB809 unless otherwise noted. Values in bold are for -40 C to +85 C; unless otherwise noted Symbol VCC ICC VTH RD VHYST TRST TPROP VOH VOL Parameter Operating Voltage Range Condition TA = 0C to 70C TA = -30C to 85C Supply Current Reset Voltage Threshold Delay circuit resistance Typical hysteresis Reset Timeout Period Propogation delay /RESET Output Voltage High /RESET Output Voltage Low MR=0.22uF /RESET < VOL, 100mV Overdrive ISOURCE = 500A VCC = VTH min., ISINK = 1.2mA VCC > 1.4V, ISINK = 50A, TA = 0C to +70C VCC > 1.6V, ISINK = 50A, TA = -30 to +85C Note 1. Note 2. Note 3. Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Min 0.65 0.70 Typ Max 8 8 Units V V A V M mV VCC = 3.3V S Voltage Options (KB862-280) TA = -30C to 85 C 2.74 0.5 1 2.80 1.0 5 50 150 9.3 0.8*VCC 4 2.86 2.0 500 ms s V 0.3 0.3 0.3 V V V Timing Diagrams VCC VTH TRST RESET VTH TRST Reset Timing Diagram March 2007 3 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 KB862 Detect voltage (+VDET) Timing Chart Supply Voltage /MR Terminal Threshold voltage GND RESET Voltage GND Delay time (tD) Delay Time (tD) .. tD = 0.69 RD C (F) (s) RD: /MR Pin Resistance C : /MR Pin Capacitor V VHYS VDD -VDET +VDET t V RESET Voltage tD tD t 4 March 2007 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 KB862 CMOS output) Characteristics (For products with KB862 detection voltage 2.8V typ. Output voltage 3.0 Consumption current Consumption Current (A) 3 2.5 2 1.5 1 0.5 0 0 2 4 6 8 10 Output Voltage (V) 2.5 2.0 1.5 1.0 0.5 0 1 1.5 2 2.5 3 Input Voltage (V) Input Voltage (V) MR pin output current MR Pin Output Current (mA) 4.0 3.0 2.0 1.0 0.0 0 0.5 1 1.5 2 2.5 3 VDS=0.5V Delay time vs MR 1000 Delay Time ( ms) 100 10 1 0.1 0.0001 0.001 0.01 0.1 1 Input Voltage (V) MR ( F) Detecting voltage vs temperature 3.00 Hysteresis voltage vs temperature Hysteresis Voltage (mV) 200 180 160 140 120 100 80 -40 -20 Detecting Voltage (V) 2.90 2.80 2.70 2.60 -40 -20 0 20 40 60 80 100 0 20 40 60 80 100 Temperature (C) Temperature (C) Note: These are typical characteristics. March 2007 5 Kingbor Technology Co.,Ltd TEL:(86)0755-83095458 FAX:(86)0755-88364052 KB862 PACAGE DESCRIPTION 20.2 0.30.1 4 3 (0.7) +0.2 1.25 -0.1 2.10.3 2 0.30.2 0 to 0.1 0.16 +0.1 -0.06 1.30.2 0.90.1 0.30.1 0.40.1 0.05 SC-82AB PACKAGE DIMENSIONS Kingbor Technology TEL:(86) 0755-83095458 FAX: (86) 0755-88364052 www.kingbor.com 6 March 2007 |
Price & Availability of KB862-280
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