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FUNCTIONAL BLOCK DIAGRAM

C2

4.7 F

m

IFB1

IFB2

IFB3

IFB4

IFB5

IFB6

VO

SW

PGND

GND

10 WLEDinseries,120 mA total

Current

Regulator

Dimming

Control

L1

10 H

m

Q1

D2

Cin

C4

0.1 F

m

Optional

CurrentMode

PWMControl

IFB 1... IFB 6

Fault

Protection

5 Vto 24 V

C1

4.7 F

m

R3

51 W

C3

1 F

m

InternalRegulator

(TPS61181/2only)

EN

PWMDimming

Fault

ISET

VBAT

EN

DCTRL

D1

R1

R3

100kW

ABSOLUTE MAXIMUM RATINGS

DISSIPATION RATINGS

TPS61180/1/2

SLVS801A – DECEMBER 2007 – REVISED MARCH 2008

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

(1)

VALUE

UNIT

(2)

–0.3 to 24

V

–0.3 to 3.6

V

(2)

–0.3 to 40

V

–0.3 to 20

V

–0.3 to 7

V

Continuous power dissipation

See Dissipation Rating Table

Operating junction temperature range

–40 to 150

°C

Storage temperature range

–65 to 150

°C

Lead temperature (soldering, 10 sec)

260

°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 network ground terminal.

PACKAGE

POWER RATING

POWER RATING

POWER RATING

270

°C/W

370 mW

204 mW

148 mW

48.7

°C/W

2.05 W

1.13 W

821 mW

(1)

The JEDEC low-K (1s) board used to derive this data was a 3in

×3in, two-layer board with 2-ounce copper traces on top of the board.

(2)

The JEDEC high-K (2s2p) board used to derive this data was a 3in

×3in, multilayer board with 1-ounce internal power and ground.

4

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