AOZ1081

Rev. 1.1 April 2009

www.aosmd.com

Page 3 of 16

Pin Configuration

Pin Description

LX

LX

EN

COMP

1

2

3

4

PGND

VIN

AGND

FB

SO-8

(Top View)

8

7

6

5

Pin

Number

Pin Name

Pin Function

1

PGND

Power ground. Electrically needs to be connected to AGND.

2

VIN

3

AGND

Reference connection for controller section. Also used as thermal connection for controller

section. Electrically needs to be connected to PGND.

4

FB

LED Current Feedback Input. The FB voltage is regulated at 250mV in normal operation. The FB

sense resistor sets the nominal LED current

5

COMP

External loop compensation pin.

6

EN

7,8

LX

PWM output connection to inductor. Thermal connection for output stage.