AOZ1022

Rev. 1.6 December 2010

www.aosmd.com

Page 2 of 17

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

AOZ1022DI

-40°C to +85°C

DFN 5x4

AOZ1022

-40°C to +85°C

EPAD S0-8

Green

PGND

VIN

AGND

FB

PGOOD

LX

EN

COMP

5x4 DFN-8

(Top View)

1

2

3

4

8

7

6

5

GND

LX

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

5x4 DFN-8

Exposed

Pad SO-8

1

1

PGND

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

22

the device starts up.

3

3

AGND

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

be electrically connected to PGND.

4

4

FB

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

between the output and AGND.

5

5

COMP

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

to compensate the control loop.

6

6

EN

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

7

Pad

LX

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

the power stage.

8

7

PGOOD

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

put voltage. PGOOD is pulled low when output is below 90% of the normal regula-

tion.

8

NC

No Connect. Pin 8 is not internally connected.