AOZ1283

Rev. 0.4 June 2012

www.aosmd.com

Page 2 of 15

Ordering Information

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

Pin Configuration

Pin Description

Part Number

Ambient Temperature Range

Package

Environmental

AOZ1283PI

-40 °C to +85 °C

EPAD SO-8

Green Product

Pin Number

Pin Name

Pin Function

1

LX

PWM Output. Connect to inductor.

2

BST

Bootstrap Voltage Input. Driver supply for High-side NMOS. Connected to 100nF

capacitor between BST and LX.

3

GND

Ground.

4

FSW

Frequency Bias. Connect to resistor to determine switching frequency.

5

COMP

Compensation. Connect to resistor and capacitor for system stability.

6

FB

Feedback Input. 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 GND.

7

SS

Soft Start.

8

EN

Enable.

Exposed Pad

VIN

Supply Voltage Input.

LX

1

EN

8

BST

2

SS

7

GND

3

FB

6

FSW

4

COMP

5

Exposed

PAD

VIN