TPS65321A-Q1 datasheet(5/43 Pages) TI1

Part #	TPS65321A-Q1

Description	36-V Step-Down Converter With Eco-mode and LDO Regulator

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TPS65321A-Q1

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SLVSE55 – NOVEMBER 2017

Product Folder Links: TPS65321A-Q1

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6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN

MAX

UNIT

Supply inputs

VIN

3.6

36

V

VIN_LDO

3

36

Buck regulator

BOOT

3.6

42

V

SW1

–1

36

FB1

0

0.8

SS

0

3

COMP

0

3

RT/CLK

0

3

nRST

0

5.25

LDO regulator

LDO_OUT

1.1

5.5

V

FB2

0

0.8

Control

EN1

0

36

V

EN2

0

36

Temperature

Operating junction temperature range, TJ

–40

150

°C

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

6.4 Thermal Information

THERMAL METRIC(1)

TPS65321A-Q1

UNIT

PWP (HTSSOP)

14 PINS

RθJA

Junction-to-ambient thermal resistance

41.0

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

33.1

°C/W

RθJB

Junction-to-board thermal resistance

25.4

°C/W

ψJT

Junction-to-top characterization parameter

1.6

°C/W

ψJB

Junction-to-board characterization parameter

25.1

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

2.7

°C/W

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TPS65321A-Q1 Datasheet(PDF) 5 Page - Texas Instruments

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