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TPS5450 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS5450 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 30 page TPS5450 www.ti.com SLVS757D – MARCH 2007 – REVISED DECEMBER 2014 6.5 Electrical Characteristics TJ = –40°C to 125°C, VIN = 5.5 V - 36 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN PIN) VSENSE = 2 V, Not switching, 3 4.4 mA PH pin open IQ Quiescent current 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 TJ = 25°C 1.202 1.221 1.239 Voltage reference accuracy V IO = 0 A – 5 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 6.0 7.5 9.0 A Current limit hiccup time 13 16 20 ms THERMAL SHUTDOWN Thermal shutdown trip point 135 162 °C Thermal shutdown hysteresis 14 °C OUTPUT MOSFET VIN = 5.5 V 150 rDS(on) High-side power MOSFET switch m Ω 110 230 Copyright © 2007–2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS5450 |
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