Connection Diagram

Top View

20030602

SOT23-5

T

θ

Ordering Information

Order Number

Package Type

NSC Package Drawing

Top Mark

Supplied As

LM2703MF-ADJ

SOT23-5

MA05B

S48B

1000 Units, Tape and Reel

LM2703MFX-ADJ

SOT23-5

MA05B

S48B

3000 Units, Tape and Reel

Pin Description/Functions

Pin

Name

Function

1

SW

Power Switch input.

2

GND

Ground.

3

FB

Output voltage feedback input.

4

SHDN

Shutdown control input, active low.

5V

IN

Analog and Power input.

SW(Pin 1): Switch Pin. This is the drain of the internal

NMOS power switch. Minimize the metal trace area con-

nected to this pin to minimize EMI.

GND(Pin 2): Ground Pin. Tie directly to ground plane.

FB(Pin 3): Feedback Pin. Set the output voltage by selecting

values for R1 and R2 using:

Connect the ground of the feedback network to an AGND

plane which should be tied directly to the GND pin.

SHDN(Pin 4): Shutdown Pin. The shutdown pin is an active

low control. Tie this pin above 1.1V to enable the device. Tie

this pin below 0.3V to turn off the device.

V

as close to the device as possible.

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