AOZ1280

Rev. 1.1 August 2011

www.aosmd.com

Page 2 of 13

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

AOZ1280CI

-40 °C to +85 °C

SOT23-6L

Green Product

RoHS Compliant

Pin Number

Pin Name

Pin Function

1

BST

Bootstrap voltage input. High side driver supply. Connected to 10 nF capacitor between

BST and LX.

2

GND

Ground.

3

FB

Feedback input. It is regulated to 0.8 V. The FB pin is used to determine the PWM output

voltage via a resistor divider between the output and GND.

4

EN

Enable pin. The enable pin is active high. Connect EN pin to VIN through current limiting

resistor. Do not leave the EN pin floating.

5

VIN

Supply voltage input. Input range from 3 V to 26 V. When VIN rises above the UVLO

threshold the device starts up.

6

LX

PWM output connection to inductor.

LX

VIN

EN

1

2

3

BST

GND

FB

SOT23-6L

(Top View)

6

5

4