TPS40007

TPS40009

SLUS589B− NOVEMBER 2003 − REVISED FEBRUARY 2005

2

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DESCRIPTION (continued)

The current-limit threshold is adjustable with a single resistor connected to the device. The TPS4000x

controllers implement a closed-loop soft start function. Startup ramp time is set by a single external capacitor

connected to the SS/SD pin. The SS/SD pin is also used for shutdown.

ORDERING INFORMATION

TA

FREQUENCY

PACKAGED DEVICES MSOP(1) (DGQ)

−40

°C to 85°C

300 kHz

TPS40007DGQ

−40

°C to 85°C

600 kHz

TPS40009DGQ

(1)

The DGQ package is available taped and reeled. Add R suffix to device type (e.g.

TPS40007DGQR) to order quantities of 2,500 devices per reel and 80 units per tube.

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range unless otherwise noted(2)

TPS4000x

UNIT

BOOT

VSW + 6.5

COMP, FB, ILIM, SS/SD

−0.3 to 6.5

Input voltage range, VIN

SW

−3 to 10.5

V

Input voltage range, VIN

SWT (SW transient < 50 ns)

−5

V

VDD

6.5

Operating junction temperature range, TJ

−40 to 150

Storage temperature, Tstg

−55 to 150

°C

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

C

(2) 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.

ACTUAL SIZE

3,05mm x 4,98mm

1

2

3

4

5

10

9

8

7

6

ILIM

FB

COMP

SS/SD

GND

BOOT

HDRV

SW

VDD

LDRV

DGQ PACKAGE(3)(4)

(TOP VIEW)

(3)

See technical brief SLMA002 for PCB guidelines for PowerPAD packages.

(4)

PowerPAD

t heat slug should be connected to GND (pin 5).