AT1313

High Efficiency, Constant Current

White-LED Driver

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

10/31/2006

REV:2.0

2

Pin Configuration

Ordering Information

Part number

Package

Marking

AT1313X_GRE

SOT-26, Green

313, Date Code with one bottom line

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

OVP

I

Over-voltage protection input. Connect to the output.

6

VIN

P

Power supply.

Parameter

Rated Value

Unit

VIN voltage

-0.3 to +6.0

V

LX , OVP voltage

-0.3 to +18

V

EN , FB to GND

-0.3 to +6.0

V

1.2

A

Continuous power dissipation (SOT-26 Ta=+25

0.35

W

Operating Junction Temperature Range

-35 to 85

℃

Lead

Temperature (Soldering 5 sec)

260

℃

Storage Temperature

-65 to 125

℃

250

℃/W

ESD Susceptibility (HBM)

2

KV

ESD Susceptibility (MM)

200

V

Note1:Permanent device damage may occur if Absolute Maximum Ratings are exceeded. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability