TPS5431DDAR Datasheet, PDF (4/32 Pages) Texas Instruments – 3-A, WIDE INPUT RANGE, STEP-DOWN CONVERTER

TPS5430
TPS5431
SLVS632E – JANUARY 2006 – REVISED SEPTEMBER 2013
ELECTRICAL CHARACTERISTICS
T_J = –40°C to 125°C, VIN = 12 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
SUPPLY VOLTAGE (VIN PIN)
I_Q
Quiescent current
VSENSE = 2 V, Not switching,
PH pin open
Shutdown, ENA = 0 V
UNDERVOLTAGE LOCK OUT (UVLO)
Start threshold voltage, UVLO
Hysteresis voltage, UVLO
VOLTAGE REFERENCE
Voltage reference accuracy
OSCILLATOR
T_J = 25°C
I_O = 0 A – 3 A
Internally set free-running frequency
Minimum controllable on time
Maximum duty cycle
ENABLE (ENA PIN)
Start threshold voltage, ENA
Stop threshold voltage, ENA
Hysteresis voltage, ENA
Internal slow-start time (0~100%)
CURRENT LIMIT
Current limit
Current limit hiccup time
THERMAL SHUTDOWN
Thermal shutdown trip point
Thermal shutdown hysteresis
OUTPUT MOSFET
r_DS(on) High-side power MOSFET switch
VIN = 5.5 V
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MIN TYP MAX UNIT
3
4.4 mA
18
50 μA
5.3
5.5
V
330
mV
1.202 1.221 1.239
V
1.196 1.221 1.245
400
500
600 kHz
150
200
ns
87
89
%
0.5
450
6.6
8
1.3
V
V
mV
10 ms
4
5
6
A
13
16
20 ms
135
162
°C
14
°C
150
mΩ
110
230
4
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