AOZ1037 データシートの表示（PDF） - Alpha and Omega Semiconductor

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AOZ1037

EZBuck™ 5A Synchronous Buck Regulator

Alpha and Omega Semiconductor 

Ordering Information

Part Number

AOZ1037PI

Ambient Temperature Range

-40°C to +85°C

Package

EPAD SO-8

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

PGND 1

VIN 2

AGND 3

FB 4

PAD

(LX)

8 NC

7 PGOOD

6 EN

5 COMP

Exposed Pad SO-8

(Top View)

AOZ1037

Environmental

Green Product

Pin Description

Pin Number

1

2

3

4

5

6

7

8

Pad

Pin Name

Pin Function

PGND

VIN

AGND

FB

COMP

EN

PGOOD

NC

LX

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

Supply voltage input. When VIN rises above the UVLO threshold and EN is logic high, the device

starts up.

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

connected to PGND.

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

put and AGND.

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

sate the control loop.

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

on/off control is not needed, connect it to VIN and do not leave it open.

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.

No Connect. Pin 8 is not internally connected.

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

stage.

Rev. 1.1 September 2010

www.aosmd.com

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