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ABSOLUTE MAXIMUM RATINGS

(1)

DISSIPATION RATINGS (2 oz Trace and Copper Pad with Solder)

RECOMMENDED OPERATING CONDITIONS

TPS51221

SLVS786 – NOVEMBER 2007

ORDERABLE

MINIMUM

OUTPUT

PACKAGE

PART NUMBER

PINS

ORDER

ECO PLAN

SUPPLY

QUANTITY

TPS51221RTVT

Tape and reel

250

Green (RoHS

PLASTIC QUAD

–40

°C to 85°C

32

and no Sb/Br)

FLAT PACK (QFN)

TPS51221RTVR

Tape and reel

3000

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

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

VALUE

UNIT

VIN

–0.3 to 30

V

VBST1, VBST2

–0.3 to 35

V

–0.3 to 7

V

SW1, SW2

–2 to 30

V

CSP1, CSP2, CSN1, CSN2

–1 to 13.5

V

EN, EN1, EN2, VFB1, VFB2, TRIP, SKIPSEL1, SKIPSEL2

–0.3 to 7

V

V5SW

–0.3 to 7

V

–7 to 7

V

DRVH1, DRVH2

–2 to 35

V

–0.3 to 7

V

DRVL1, DRVL2, COMP1, COMP2, VREG5, RF, VREF2, IMON1 PGOOD1,

–0.3 to 7

V

PGOOD2

VREG3

–0.3 to 3.6

V

–40 to 125

°C

–55 to 150

°C

(1)

Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings

only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating

conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

All voltage values are with respect to the network ground terminal unless otherwise noted.

(3)

Voltage values are with respect to the corresponding SW terminal.

(4)

When EN is high and V5SW is grounded, or voltage is applied to V5SW when EN is low.

PACKAGE

DERATING FACTOR

POWER RATING

POWER RATING

32 pin RTV

1.7 W

17 mW/

°C

0.7 W

MIN

TYP

MAX

UNIT

Supply voltage

VIN

4.5

28

V

V5SW

–0.8

6

I/O voltage

VBST1, VBST2, DRVH1, DRVH2

–0.1

33

V

DRVH1, DRVH2 (wrt SW1, 2)

–0.1

6

SW1, SW2

–1.6

28

CSP1, CSP2, CSN1, CSN2

–0.8

13

EN, EN1, EN2, VFB1, VFB2, TRIP, DRVL1, DRVL2, COMP1, COMP2,

–0.1

6

VREG5, RF, VREF2, PGOOD1, PGOOD2, SKIPSEL1, SKIPSEL2, IMON1

VREG3

–0.1

3.5

–40

85

°C

Copyright © 2007, Texas Instruments Incorporated

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Product Folder Link(s): TPS51221