TPS40002 datasheet(5/28 Pages) TI

Part #	TPS40002

Description	LOW-INPUT VOLTAGE-MODE SYNCHRONOUS BUCK CONTROLLER

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Manufacturer	TI [Texas Instruments]

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TPS40000, TPS40001

TPS40002, TPS40003

TPS40004, TPS40005

SLUS507D − JANUARY 2002 − REVISED NOVEMBER 2005

5

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ELECTRICAL CHARACTERISTICS

over recommended operating temperature range, TA = −40_C to 85_C, VDD = 5.0 V, all parameters measured at zero

power dissipation (unless otherwise noted)

output driver

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RHDHI

HDRV pull-up resistance

VBOOT−VSW = 3.3 V,

ISOURCE = −100 mA

3

5.5

RHDLO HDRV pull-down resistance

VBOOT − VSW = 3.3 V,

ISINK = 100 mA

1.5

3

Ω

RLDHI

LDRV pull-up resistance

VDD = 3.3 V,

ISOURCE = −100 mA

3

5.5

RLDLO

LDRV pull-down resistance

VDD = 3.3 V,

ISINK = 100 mA

1.0

2.0

tRISE

LDRV rise time

15

35

tFALL

LDRV fall time

CLOAD = 1 nF

10

25

ns

HDRV rise time

CLOAD = 1 nF

15

35

ns

HDRV fall time

10

25

thermal shutdown

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tSD

Shutdown temperature(1)

165

°C

Hysteresiss(1)

15

°C

sw node

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ISW

Leakage current in shutdown (1)

15

µA

(1)

Ensured by design. Not production tested.

(2)

At VDD input voltage of 2.25 V, derate the maximum duty cycle by 3%.

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