AT1308

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 Block Diagram VIN AT1308 Preliminary Product Information Micro-Power Step up DC-DC Converter 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 0.3Ω N-MOS that allows for smaller capacitor and inductor. Fault condition protection uses cycle-bycycle current limiting to sense maximum inductor current and thermal protection. Also included soft-start circuitry eliminates inrush current during start-up. The AT1308 is availab...