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TPS5431 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS5431 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 36 page 7 TPS5430, TPS5431 www.ti.com SLVS632I – JANUARY 2006 – REVISED APRIL 2017 Product Folder Links: TPS5430 TPS5431 Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated 6.5 Electrical Characteristics TJ = –40°C to 125°C, VIN = 12 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN PIN) IQ Quiescent current VSENSE = 2 V, Not switching, PH pin open 3 4.4 mA Shutdown, ENA = 0 V 18 50 μA UNDERVOLTAGE LOCK OUT (UVLO) Start threshold voltage, UVLO 5.3 5.5 V Hysteresis voltage, UVLO 330 mV VOLTAGE REFERENCE Voltage reference accuracy TJ = 25°C 1.202 1.221 1.239 V IO = 0 A – 3 A 1.196 1.221 1.245 OSCILLATOR Internally set free-running frequency 400 500 600 kHz Minimum controllable on time 150 200 ns Maximum duty cycle 87% 89% ENABLE (ENA PIN) Start threshold voltage, ENA 1.3 V Stop threshold voltage, ENA 0.5 V Hysteresis voltage, ENA 450 mV Internal slow-start time (0~100%) 6.6 8 10 ms CURRENT LIMIT Current limit 4 5 6 A Current limit hiccup time 13 16 20 ms THERMAL SHUTDOWN Thermal shutdown trip point 135 162 °C Thermal shutdown hysteresis 14 OUTPUT MOSFET rDS(on) High-side power MOSFET switch VIN = 5.5 V 150 m Ω 110 230 |
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