AT1312A/B/C
Preliminary Product Information
High Efficiency, Constant Current
White-LEDs Driver
Pin Configuration
SOT-25
(TOP VIEW)
VIN OVP EN
5
4
6
312
A:1312AX
B:1312BX
C:1312CX
1
2
3
LX GND FB
Ordering Information
Part number
Package
Current
Limit
OVP
Marking
Date Code
Protection
28V
AT1312AX
AT1312AX_GRE SOT-26, Green 400mA
SOT-26
400mA
28V
,Date Code with one bottom
line
AT1312BX
AT1312BX_GRE SOT-26, Green 300mA
SOT-26
300mA
23V
23V
Date Code
,Date Code with one bottom
line
AT1312CX
AT1312CX_GRE SOT-26, Green 200mA
SOT-26
200mA
16V
16V
Date Code
,Date Code with one bottom
line
: Date Code
*For more marking information, contact our sales representative directly
Pin Description
Pin N0. Symbol I / O
Description
LX
GND
Step-up Regulator N-MOS Drain. Place output diode and inductor.
Ground
1
2
I
P
Step-Up Regulator Feedback Input. Connect a sense resistor from FB to
ground.
3
FB
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.
4
EN
I
OVP
Over-voltage protection input. Connect to the output.
5
6
I
Power supply.
VIN
P
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
2/23/2006 REV:1.1
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
2
AIMTRON [ AIMTRON TECHNOLOGY ]
