AOZ1037

Rev. 1.1 September 2010

www.aosmd.com

Page 2 of 14

Ordering Information

AOS Green Products use reduced levels of Halogens, and are also RoHS compliant.

Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information.

Pin Configuration

Pin Description

Part Number

Ambient Temperature Range

Package

Environmental

AOZ1037PI

-40°C to +85°C

EPAD SO-8

Green Product

1

2

3

4

PGND

VIN

AGND

FB

Exposed Pad SO-8

(Top View)

PAD

(LX)

NC

PGOOD

EN

COMP

8

7

6

5

Pin Number

Pin Name

Pin Function

1

PGND

Power ground. PGND needs to be electrically connected to AGND.

starts up.

3

AGND

Analog ground. AGND is the reference point for controller section. AGND needs to be electrically

connected to PGND.

4

FB

Feedback input. The FB pin is used to set the output voltage via a resistor divider between the out-

put and AGND.

5

COMP

External loop compensation pin. Connect a RC network between COMP and AGND to compen-

sate the control loop.

6

EN

Enable pin. Pull EN to logic high to enable the device. Pull EN to logic low to disable the device. if

7

PGOOD

Power Good Output. PGOOD is an open-drain output that indicates the status of output voltage.

PGOOD is pulled low when output is below 90% of the normal regulation.

8

NC

No Connect. Pin 8 is not internally connected.

Pad

LX

Switching node. LX is the drain of the internal PFET. LX is used as the thermal pad of the power

stage.