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TPS5450 Datasheet(PDF) 5 Page - Texas Instruments

No. de pieza TPS5450
Descripción Electrónicos  TPS5450 5-A, Wide Input Range, Step-Down Converter
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS5450 Datasheet(HTML) 5 Page - Texas Instruments

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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
110
230
Copyright © 2007–2014, Texas Instruments Incorporated
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