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Rev. 0.5 March 2012

www.aosmd.com

AOZ1284

Ordering Information

Part Number

Temperature Range

Package

Environmental

AOZ1284PI

-40°C to +85°C

EPAD SO-8

Green Product

AOZ1284PI-1

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

Pin Configuration

EPAD SO-8

(Top View)

Pin Description

Part Number

Pin Name

Pin Function

1

LX

PWM Output Pin. Connect to inductor.

2

BST

Bootstrap Voltage Pin. Driver supply for High Side NMOS. Connected to

100nF capacitor between BST and LX.

3

GND

Ground Pin.

4

FSW

Frequency Bias Pin. Connect to resistor to determine switching frequency.

5

COMP

Compensation Pin. Connect to Resistor and Capacitor for system stability.

6

FB

Feedback Pin. It is regulated to 0.8V. The FB pin is used to determine the

PWM output voltage via a resistor divider between the Output and Ground.

7

SS

Soft Start Pin.

8

EN

Enable Pin.

Exposed PAD

VIN

Supply Voltage Pin.

EN

8

SS

7

FB

6

COMP

5

Exposed

PAD

VIN