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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)

1

2

3

4

5

10

9

8

7

6

EN

VIN

VIN

GND

FB

PGND

PGND

SW

SW

MODE

DRC PACKAGE

(TOP VIEW)

TPS62020

TPS62021

TPS62026

SLVS076C – JUNE 2003 – REVISED DECEMBER 2004

Terminal Functions

TERMINAL

I/O

DESCRIPTION

NAME

NO.

EN

1

I

should not be left floating and must be terminated.

VIN

2, 3

I

Supply voltage input

GND

4

Analog ground

FB

5

I

Feedback. Connect an external resistor divider to this pin.

If a fixed-output-voltage device is ued, connect FB directly to the output.

MODE

6

I

The difference between TPS6202x and TPS62021 is the logic level of the MODE pin. The TPS62021 has an

MODE

active-low MODE pin. The TPS6202x is forced into fixed-frequency PWM mode by pulling the MODE pin high.

Pulling the MODE pin low enables the Power Save Mode, operating in PFM mode (Pulse frequency modulation)

at light load current, and in fixed frequency PWM at medimum to heavy load currents. In contrast, the TPS62021

is forced into PWM mode by pulling the MODE pin low.

SW

7, 8

I/O

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

PGND

9, 10

Power ground

4