AT1309

Preliminary Product Information

Micro-Power Step up DC-DC Converter

Pin Configuration

Ordering Information

Part number

Package

Marking

AT1309X

SOT-25

Date Code

AT1309X_GRE

SOT-25, Green

,Date Code with one bottom line

: Date Code

Pin Description

Pin N0.

Symbol

I / O

Description

1

LX

I

Step-up Regulator N-MOS Drain. Place output diode and inductor.

2

GND

P

Ground

3

FB

I

Step-Up Regulator Feedback Input. Connect a sense resistor from FB to

ground.

4

EN

I

Enable and Dimming Control Input. LED brightness and IC shutdown are

controlled by the voltage on EN. Driving low for longer than 4ms to

shutdown the IC.

5

VIN

P

Power supply.

7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.

Tel: 886-3-563-0878

Fax: 886-3-563-0879

3/2/2006

REV:1.1

2