TPS54526PWPR.B datasheet(6/36 Pages) TI2

номер детали	TPS54526PWPR.B

подробное описание детали	TPS54526 4.5-V to 18-V Input, 5.5-A Synchronous Step-Down Converter with Ecomode ™

PDF	36 Pages

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over operating free-air temperature range, VIN = 12V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CURRENT LIMIT

Iocl

Current limit

LOUT = 1.5 μH(1),

6.1

6.9

8.4

THERMAL SHUTDOWN

TSDN

Thermal shutdown threshold

Shutdown temperature (1)

165

°C

Hysteresis (1)

SOFT START

ISSC

SS charge current

VSS = 1.0 V

4.2

6.0

7.8

μA

ISSD

SS discharge current

VSS = 0.5 V

0.1

0.2

POWER GOOD

VTHPG

PG threshold

VVFB rising (good)

VVFB falling (fault)

IPG

PG sink current

VPG = 0.5 V

2.5

OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION

VOVP

Output OVP trip threshold

OVP detect

120

125

130

VUVP

Output UVP trip threshold

UVP detect

Hysteresis

UVLO

VUVLO

UVLO threshold

Wake up VREG5 voltage

3.31

3.61

3.91

Fall VREG5 voltage

2.82

3.12

3.42

Hysteresis VREG5 voltage

0.37

0.49

0.61

(1)

Not production tested.

6.6 Timing Requirements

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ON-TIME TIMER CONTROL

tON

On time

VIN = 12 V, VO = 1.05 V

155

tOFF(MIN)

Minimum off time

TA = 25°C, VFB = 0.7 V

260

330

OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION

tOVPDEL

Output OVP prop delay

μs

tUVPDEL

Output UVP delay

0.25

tUVPEN

Output UVP enable delay

Relative to soft-start time

x 1.7

TPS54526

SLVSB84D – MAY 2012 – REVISED APRIL 2021

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