AT1309
Preliminary Product Information
Micro-Power Step up DC-DC Converter
Feature
•Operating Voltage:2.5V to 6.0V.
•High Operating Frequency: 1.4MHz
•High Output Voltage: Up to 28V
•Shutdown Current <1µA
•Digital Dimming Control.
•Built-in Cycle-by Cycle Current-Limiting.
•Built-in Soft-Start Function.
•±1.5% 1.23V Reference Voltage
•Tiny SOT-25 Package
Description
The AT1309 step-up converter is designed for small
or medium size LCD panel of high bias voltage with
a constant current to provide PDAs, and other
hand-held devices. It features a fast 1.4 MHz
current-mode PWM control with a built-in 0.3Ω
N-MOS that allows for smaller capacitor and
inductor. Fault condition protection uses cycle-by
-cycle current limiting to sense maximum inductor
current and thermal protection. Also included
soft-start eliminates inrush current during start-up.
The AT1309 is available in 5-pin SOT-25 packages.
Application
• STN/OLED Bias
• Personal Digital Assistants(PDAs)
• DSC
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
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
WWW:
http://www.aimtron.com.tw
3/2/2006 REV:1.1
Email:
service@aimtron.com.tw
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AIMTRON [ AIMTRON TECHNOLOGY ]
