TPS65253RHD datasheet(8/24 Pages) TI1

No de pièce	TPS65253RHD

Description	4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK

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Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

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TPS65253

SLVSAW8

– JUNE 2011

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

TA = –40°C to 85°C, VIN = 12 V, LO = 2.2 µH, fSW = 500 kHz (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

MOSFET (BUCK 2)

On resistance of high side FET on

H.S. Switch

25

°C, BOOT = 6.5 V

115

m

Ω

CH2

On resistance of low side FET on

L.S. Switch

25

°C, VIN = 12 V

75

m

Ω

CH2

ERROR AMPLIFIER

Error amplifier

-2

µA < ICOMP < 2 µA

130

µ℧

transconductance

CMP to ILX gm

ILX = 0.5 A

12

A/V

POWER GOOD RESET GENERATOR

Output falling

85

Threshold voltage for buck under

VUVBUCKX

%

Output rising (PG will be

voltage

90

asserted)

tUV_deglitch

Deglitch time (both edges)

11

ms

tON_HICCUP

Hiccup mode ON time

VUVBUCKX asserted

12

ms

All converters disabled. Once

tOFF_HICCUP elapses, all

tOFF_HICCUP

Hiccup mode OFF time

20

ms

converters will go through

sequencing again.

Output rising (high side FET will

109

be forced off)

Threshold voltage for buck over

VOVBUCKX

%

voltage

Output falling (high side FET will

107

be allowed to switch )

Measured after the later of

tRP

minimum reset period

Buck 1 or Buck 2 power-up

32

ms

successfully

THERMAL SHUTDOWN

TTRIP

Thermal shut down trip point

Rising temperature

160

°C

THYST

Thermal shut down hysteresis

Device re-starts

20

°C

TTRIP_DEGLITCH

Thermal shut down deglitch

100

120

µs

8

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Fabricant	No de pièce	Fiches technique	Description
Texas Instruments	TPS65253	1Mb / 25P	[Old version datasheet] 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK CONVERTER WITH INTEGRATED FETS

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Description similaire - TPS65253RHD

Fabricant	No de pièce	Fiches technique	Description
Texas Instruments	TPS65253	1Mb / 25P	[Old version datasheet] 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK CONVERTER WITH INTEGRATED FETS
	TPS65251	1Mb / 31P	[Old version datasheet] 4.5-V TO 18-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN THREE BUCK SWITCHER WITH INTEGRATED FET
	TPS56121	1Mb / 34P	[Old version datasheet] 4.5-V to 14-V Input High-Current Synchronous Buck Converter
	TPS56221	661Kb / 25P	[Old version datasheet] 4.5-V to 14-V Input High-Current Synchronous Buck Converter
	TPS56121	477Kb / 22P	[Old version datasheet] 4.5-V to 14-V Input High-Current Synchronous Buck Converter
	TPS65251	2Mb / 35P	[Old version datasheet] TPS65251 4.5-V to 18-V Input, High-Current, Synchronous Step-Down Three Buck Switcher With Integrated FET
	TPS56121	1Mb / 31P	[Old version datasheet] 4.5-V to 14-V Input High-Current Synchronous Buck SWIFT Converter
	TPS65252	1Mb / 31P	[Old version datasheet] 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK SWITCHER WITH INTEGRATED FET AND ONE USB SWITCH AND SVS
	TPS65252	924Kb / 29P	[Old version datasheet] 4.5-V TO 16-V INPUT, HIGH CURRENT, SYNCHRONOUS STEP DOWN DUAL BUCK SWITCHER WITH INTEGRATED FET AND ONE USB SWITCH AND SVS
	TPS56121	1Mb / 31P	[Old version datasheet] TPS56121 4.5-V to 14-V Input High-Current Synchronous Buck Converter

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