LP6482S-02

May.-2013

www.lowpowersemi.com

Page 3 of 10

Preliminary Datasheet

LP6482S

Functional Pin Description

Package Type

Pin Configurations

SOP-8 / ESOP-8

SW

GND

1

2

3

4

5

6

7

8

VIN

BS

BS

VIN

SW

GND

SS

SS

EN

EN

COMP

COMP

FB

FB

EXPOSED

PAD

CONNECT

TO

PAD

SOP-8(Top View)

ESOP-8(Top View)

Pin Description

Pin

Name

Description

1

BS

High-Side Gate Drive Boost Input. Connect a 0.01uF or greater capacitor from SW to BS

to power the high side switch.

2

VIN

Supply Input.

3

SW

Switch Mode Connection to Inductor. This pin connects to the drains of the internal main

and synchronous power MOSFET switches.

4

GND

Ground.

5

FB

Feedback Input. Connect FB to the center point of the external resistor divider. Normal

voltage for this pin is 0.923V.

6

COMP

Loop compensation input. Connect a series RC network from COMP to GND to

Compensate the regulation control loop.

7

EN

Enable Control Input. Drive EN above 2.5V to turn on the Channel. Drive EN below 0.4V

to turn it off (shutdown current < 0.1µA).

8

SS

Soft-start control input. Connect an external capacitor to program the soft-start. If

unused, leave it open, which means internal soft-start function.

9

E-Pad

Exposed Pad. The pin connect to GND.