UNISONIC TECHNOLOGIES CO., LTD ULE4275 Preliminary LINEAR INTEGRATED CIRCUIT 5-V LOW-DROPOUT VOLTAGE REGULATOR DESCRIPTION The UTC ULE4275 is a monolithic integrated low-dropout voltage regulator. The device regulates an input voltage up to 45V to VOUT = 5V (typical). The device can drive loads up to 450mA. It also provides overcurrent protection and overtemperature protection for control of the state of the output voltage. The device generates a reset signal for an output voltage, VOUT,rt, of 4.65V (typical). By the use of an external delay capacitor, one can program the reset delay time. The input capacitor, CIN, compensates for line fluctuation. Using a resistor of approximately 1Ω in series with CIN dampens the oscillation of input inductance and input capacitance. The output capacitor, COUT, stabilizes the regulation circuit. The specification for stability is at COUT ≥ 22μF and ESR ≤ 5Ω, within the operating temperature range. Stability for electrolytic capacitors specifically is at COUT ≥ 68µF within the operating temperature range. The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The device also incorporates a number of internal circuits for protection against: overload, overtemperature, and reverse polarity. FEATURES * Qualified for Automotive Applications * Output Voltage 5V ± 2% * Very Low Current Consumption * Power-On and Undervoltage Reset * Reset Low-Level Output Voltage<1V * Very Low Dropout Voltage * Internal Short-Circuit Current Limiting * Reverse-Polarity Proof ORDERING INFORMATION Ordering Number Lead Free Halogen Free ULE4275L-TQ5-T ULE4275G-TQ5-T ULE4275L-TQ5-R ULE4275G-TQ5-R Package Packing TO-263-5 TO-263-5 Tube Tape Reel ULE4275L-TQ5-T (1)Packing Type (1) T: Tube, R: Tape Reel (2)Package Type (2) TQ5: TO-263-5 (3)Green Package (3) L: Lead Free, G: Halogen Free and Lead Free www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 6 QW-R102-064.a ULE4275 Preliminary MARKING PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5 PIN NAME IN RESET GND DELAY OUT LINEAR INTEGRATED CIRCUIT DESCRIPTION Input. Connect to ground as close to device as possible, through a ceramic capacitor. Reset output. Open-collector output Ground. Internally connected to heatsink Reset delay. Connect to ground with a capacitor to set delay time. Output. Connect to ground with≥22µF capacitor, ESR<5Ω at 10kHz. BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R102-064.a ULE4275 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING (over operating free-air temperature range (unless otherwise noted)) RATINGS UNIT -42~45 V VI -0.3~7 V Output Voltage -1~16 V VO Range -0.3~25 V Input Current II ±2 mA Output Current IO ±5 mA Operating Junction Temperature TJ -40~150 °C Storage Temperature TSTG -65~150 °C Electrostatic Human body model (HBM) 6000 V V(ESD) Discharge Machine model (MM) 400 V Notes: 1. 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. 2. All voltage values are with respect to the network ground terminal. Input Voltage Range (Note 1) PARAMETER IN DELAY OUT RESET DELAY SYMBOL RECOMMENDED OPERATING CONDITIONS (over operating free-air temperature range (unless otherwise noted)) PARAMETER SYMBOL Input Voltage VI Junction Temperature TJ MIN 5.5 -40 TYP MAX 42 150 UNIT V °C THERMAL RESISTANCES CHARACTERISTICS PARAMETER Junction-to-Ambient Thermal Resistance Junction-to-Case UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw SYMBOL θJA θJC RATINGS 32.8 38 UNIT °C/W °C/W 3 of 6 QW-R102-064.a ULE4275 Preliminary LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (over recommended operating free-air temperature range, VI=13.5V, TJ=-40°C~150°C (unless otherwise noted) (see Test Circuit)) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT IO=5mA~400mA, VI=6V~28V 4.9 5 5.1 V Output Voltage VO 4.9 5 5.1 V IO=5mA~200mA, VI=6V~40V Output Current Limit IO 350 700 950 mA TJ=25°C 150 200 μA IO=1mA TJ≤85°C 150 220 μA Current Consumption, Iq=II-IO IQ IO=250mA 7.5 18 mA IO=400mA 12 22 mA Dropout Voltage (Note) VDO IO=300mA, Vdo=VI-VO 250 500 mV Load Regulation IO=5mA~400mA 15 30 mV Line Regulation ∆VI=8V~32V, IO=5mA -15 5 15 mV Power-Supply Ripple Rejection PSRR fr=100Hz, Vr=0.5Vpp 60 dB ∆VO 0.5 mV/K Temperature Output-Voltage Drift ∆T RESET Switching Threshold VO,rt 4.5 4.65 4.8 V RESET Output Low Voltage VROL Rext≥5kΩ, VO>1V 0.2 0.4 V RESET Output Leakage Current IROH VROH=5V 0 10 μA RESET Charging Current ID,c VD=1V 3 5.5 9 μA RESET Upper Timing Threshold VDU 1.5 1.8 2.2 V RESET Lower Timing Threshold VDRL 0.2 0.4 0.7 V Note: Measured when the output voltage VO has dropped 100 mV from the nominal value obtained at VI=13.5V. SWITCHING CHARACTERISTICS (over operating free-air temperature range (unless otherwise noted) (see Figure 1)) PARAMETER SYMBOL TEST CONDITIONS MIN RESET Delay Time trd CD=47nF 10 RESET Reaction Time trr CD=47nF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TYP 16 0.5 MAX 22 2 UNIT ms µs 4 of 6 QW-R102-064.a ULE4275 Preliminary LINEAR INTEGRATED CIRCUIT TIMING DIAGRAM VI t < trr VO VQ,rt d△V = ID,c CD d△T VD t VDU VDRL trr trd t VRO t Power-On Reset Thermal Shutdown Voltage Dip at Input Undervoltage Secondary Spike Overload at Output Figure 1. Reset Timing Diagram TEST CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 6 QW-R102-064.a ULE4275 Preliminary 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 6 of 6 QW-R102-064.a