UNISONIC TECHNOLOGIES CO., LTD UL9480 Advance LINEAR INTEGRATED CIRCUIT A VOLTAGE REGULATOR FOR CAR ALTERNATOR DESCRIPTION The UTC UL9480 is a specially designed voltage regulator for car alternator. The regulator voltage is precise with “single function” self-oscillation. These devices have a maximum output current of 5.5 A. The chip is integrated both the control section and the out power stage. So the devices require no external components, reducing the cost of the system and increasing reliability. FEATURES * No external components * Precise regulated voltage * High output current * Very low start voltage * Precise temperature coefficient * Short circuit protection * Output current limit * Reverse battery protection * +80V Load dump protection * Low energy spike protection * Over temperature protection ORDERING INFORMATION Ordering Number Lead Free Halogen Free UL9480L-TA3-T UL9480G-TA3-T Note: Pin Assignment: VS: VS G: Ground O: Output Package TO-220 Pin Assignment 1 2 3 VS G O Packing Tube MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 4 QW-R101-046.a UL9480 LINEAR INTEGRATED CIRCUIT PIN DESCRIPTION PIN NO. 1 2 3 Advance PIN NAME VS OUTPUT GND DESCRIPTION Voltage supply Output Ground BLOCK DIAGRAM VS 1 Load Dump Protection Curr.Limit & Thermal Compensat. RS Voltage Reference Over Temperature Pretection Input Divider Input Comparator 2 OUTPUT Driver 3 GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 4 QW-R101-046.a UL9480 Advance LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Transient Overvoltage : Load Dump : 5ms ≤Trise ≤10ms, τf Fall Time Constant ≤100ms, 80 V VS Rsource≥0.5Ω Current into Low Energy Clamping Zener ICLAMP 100 mA (Trise=5µs; Tdecay≤2ms; duty cycle≤5%) Maximum Output Current IOUT 5.5 A Junction Temperature Range TJ -55~+150 °C Storage Temperature Range TSTG -55~+150 °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 RESISTANCES CHARACTERISTICS PARAMETER SYMBOL θJC Junction to Case RATINGS 3 UNIT °C/W ELECTRICAL CHARACTERISTICS (-40°C≤TJ≤125°C unless otherwise noted) PARAMETER Regulation Voltage Temperature Coeff. of the Regulation Voltage Error on Nominal Temperature Coeff. Load Regulation Control Circuit Minimum Start up Voltage Shutdown Voltage (Dump Protection Threshold) Output Saturation Voltage Start Up Saturation Voltage Quiescent Current Supply Current Field Pin Sink Current SYMBOL MIN TYP MAX 14.75 15.05 15.35 14.10 14.40 14.70 13.10 13.40 13.70 UNIT V V V CT -10 mV/°C eCT ±30 % mV VR TEST CONDITIONS TJ=-40°C TJ=25°C TJ=125°C VR 0.1In<Ialt <0.9In (Note 1) 250 VSU Measured at Supply Pin 2 Vsd VSAT 1 VSAT 2 IQ IS Ifs V 22 Ifield=4Ap Ifield=200mA Field Off Ifield=4Ap Field Off Field Pin @ 16V Low Energy Clamping Zener V1_CLAMP Iclamp=50mA Voltage Switching Frequency FSW 0.1In<Ialt <0.9In 30 Note: Measured on an alternator with the following characteristics: In=<90A; Ialt/Ifield>=23. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 1.2 0.7 20 50 V 2 1 V V mA mA 5 mA 120 V 1000 Hz 3 of 4 QW-R101-046.a UL9480 Advance LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION 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 4 of 4 QW-R101-046.a