TPS62040

TPS62042,TPS62043

TPS62044,TPS62046

SLVS463A − JUNE 2003 − REVISED OCTOBER 2003

www.ti.com

4

PIN ASSIGNMENTS

1

2

3

4

5

10

9

8

7

6

EN

VIN

VIN

GND

FB

PGND

PGND

SW

SW

MODE

DGQ PACKAGE

(TOP VIEW)

NOTE: The PowerPAD must be connected to GND.

1

2

3

4

5

10

9

8

7

6

EN

VIN

VIN

GND

FB

PGND

PGND

SW

SW

MODE

DRC PACKAGE

(TOP VIEW)

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

I/O

DESCRIPTION

EN

1

I

Enable. Pulling EN to ground forces the device into shutdown mode. Pulling EN to VI enables the device. EN should

not be left floating and must be terminated.

VIN

2,3

I

Supply voltage input

GND

4

Analog ground

FB

5

I

Feedback pin. Connect FB directly to the output if the fixed output voltage version is used. For the adjustable version

an external resistor divider is connected to this pin. The internal voltage divider is disabled for the adjustable version.

MODE

6

I

Pulling the MODE pin high allows the device to be forced into fixed frequency operation. Pulling the MODE pin to low

enables the power save mode where the device operates in fixed frequency PWM mode at high load currents and

in PFM mode (pulse frequency modulation) at light load currents.

SW

7,8

I/O

This is the switch pin of the converter and is connected to the drain of the internal power MOSFETs

PGND

9,10

Power ground