AT1380A
Preliminary Product Information
Switching Regulator Controller for LCD Bias

2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879 Email: service@aimtron.com.tw
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Features
• 2.5 to 15 V supply voltage operating range.
• Low current consumption: 6 mA in operation,
1 µA or less in stand-by.
• 20 kHz to 1 MHz operation frequency range.
• Provides a fixed output current with minimal
supply voltage fluctuations by using an external
resistor to set the output current.
• Totem-pole output.
• Built-in soft start circuit.
• Built-in timer-latch short circuit detection and
protection circuit (SCP).
Applications
• LCD Displays
• PDAs
• Digital Still Cameras
General Description
The AT1380A is a single-channel PWM control IC
for DC/DC conversion with soft start function and
short circuit detection. Adjustable soft start is
programmed with an external capacitor on SCP
pin. The AT1380A is ideal for up, down and fly-
back conversion.
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.