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TPS5431 Datasheet(PDF) 7 Page - Texas Instruments

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Part # TPS5431
Description  3-A, Wide Input Range, Step-Down Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS5431 Datasheet(HTML) 7 Page - Texas Instruments

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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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