AT1312A

www.DataSheet4U.com AT1312A/B/C Preliminary Product Information High Efficiency, Constant Current White-LEDs Driver Feature Description The AT1312A/B/C step-up converter drives white Operating Voltage:2.5V to 6.0V. LEDs with a constant current to provide backlight in High Operating Frequency: 1MHz cell phones, PDAs, and other hand-held devices. It High Output Voltage: Up to 16V/23V/28V features allowing series connection of the white LEDs so that the LED currents are identical for Shutdown Current <1µA uniform brightness. An enable input can be pulsed 16V/23V/28V Output Over-Voltage Protection repeatedly to adjust LED’s brightness. The fast 1.0 Digital Dimming Control. MHz current-mode PWM control allows for smaller capacitor and inductor. Fault condition protection Built-in Cycle-by Cycle Current-Limiting. uses cycle-by-cycle current limiting to sense Built-in Soft-Start Function. maximum inductor current, thermal protection and 0.2V Low Reference Voltage over-voltage protection. Also included soft-start eliminates inrush current during start-up. The 0.2V Tiny SOT-26 Package low reference voltage minimized the power loss across the current-setting resistor. Application LED Module Compact Back Light Module Constant Current Source The AT1312A/B/C is available in 6-pin SOT-26 packages. 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,Tai...