Feature
•Operating Voltage:2.5V~6.0V
•High Operating Frequency: 1MHz
•Built-in N-MOS, Rds(on)≒0.3Ω(TYP)
•High Output Voltage: Up to 28V
•Shutdown Current <1µA
•Built-in Cycle-by-Cycle Current-limited.
•Built-in Soft-Start Function.
•1.5% 1.23V Reference.
•Tiny SOT-25 Package Application
• STN/OLED Bias
• Personal Digital Assistants (PDAs)
• DSC
Description The AT1308 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 1.0 MHz current-mode PWM control with a built-in 0.3ΩN-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 circuitry eliminates inrush current during start-up. The AT1308 is available in 5-pin SOT-25 packages.
