UNISONIC TECHNOLOGIES CO., LTD UU4793 Preliminary LINEAR INTEGRATED CIRCUIT OVERLOAD MONITORING WITH RESISTIVE LOAD, VT = 44.5 mV DESCRIPTION The UTC UU4793 is a bipolar integrated circuit designed for monitoring over loading or short circuit in automotive or industrial applications. The threshold VT is 44.5 mV and V4, 6=VS-VT. VT is not dependent of the power supply voltage VS. If the voltage developed across shunt resistor RSH exceeds VT, IC turns on the output, or else turns off the output. The output is turned off when input switch Pin 8 is open or there is a lack of power supply voltage. The output breakdown voltage is decided by the Z-diodes Z3 and Z5 which have a typical value of VZ = 22 V. A not used of the comparator input have to be connected to Pin 7. FEATURES * Two common reference comparators * Tight threshold tolerance * Constant threshold * Output with NPN * 8 kV - ESD protection * Protection of reverse polarity * Load-dump protection ORDERING INFORMATION Ordering Number Lead Free Halogen Free UU4793L-S08-R UU4793G-S08-R UU4793L-S08-T UU4793G-S08-T www.unisonic.com.tw Copyright © 2012 Unisonic Technologies Co., Ltd Package Packing SOP-8 SOP-8 Tape Reel Tube 1 of 5 QW-R121-022.a UU4793 Preliminary PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME GND VS OUT2 IN1 OUT1 IN2 VREF Input Switch LINEAR INTEGRATED CIRCUIT DESCRIPTION Ground Power supply voltage Comparator 2 output Comparator 1 input Comparator 1 output Comparator 2 input Reference voltage Input switch pin BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R121-022.a UU4793 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER Supply Voltage Current Consumption (t =2ms, measured at Pin 1 (GND)) Pin 2, 7 SYMBOL VS RATINGS 16.5 UNIT V I1 1.5 A Pin 1 Output Current Pin 3, 5 I3,5 20 mA Input Voltage (reference point Pin 7) Pin 4, 6 -V4, 6 6 V TA= 95°C 360 PD Power Dissipation mW TA= 60 °C 560 Ambient Temperature TA -40 ~ +95 °C Junction Temperature TJ 150 °C Storage Temperature TSTG -55 ~ +125 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER Junction to Ambient SYMBOL θJA RATINGS 160 UNIT K/W ELECTRICAL CHARACTERISTICS (VS = 9~15 V, TA = -40~+95 °C, fig. 1, unless otherwise specified) PARAMETER Supply Voltage Internal Z-Diode Z2 SYMBOL VS VZ Current Consumption Output Saturation Voltage Output Z-Diodes Z3, Z5 Control Signal Threshold Temperature Coefficient Control Signal Threshold Threshold Voltage I1 VSAT VZ -VT of VS=12V measured at Pin 1 (GND) VS= 9V, I3, 5=10mA, TA= 25°C I3, 5= 1mA, TA= 25°C PIN 2, 7 2 V8 Switch identification II tD(ON) tD(OFF) Switch-on High to low Switch-off Low to high UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 9 20 1 3, 5 3, 5 4, 6 TC Input Currents Delay Time TEST CONDITIONS 8 4, 6 8 3, 5 21 43 TYP MAX 15 UNIT V V 4.5 6 mA 0.5 V V mV 44.5 46 15 μV/K 0.6 VS 100 5 6 30 V nA μA μs μs 3 of 5 QW-R121-022.a UU4793 Preliminary TYPICAL APPLICATION CIRCUIT TIMING DIAGRAM LINEAR INTEGRATED CIRCUIT V4, 6 (V) 12.00 11.90 V0 (V) td (off) td (on) 12 6 0 10 20 30 40 50 60 t (µs) Fig. 2 Timing Diagram UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R121-022.a UU4793 Preliminary LINEAR INTEGRATED CIRCUIT UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R121-022.a