AT1312C Datasheet | Aimtron Technology

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 - pact 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,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 : http://.aimtron..tw 2/23/2006 REV:1.1 Email: service@aimtron..tw 1 AT1312A/B/C Preliminary Product Information High Efficiency, Constant Current White-LEDs Driver Pin Configuration SOT-25 (TOP VIEW) VIN OVP EN 6 312 5 4 A:1312AX B:1312BX C:1312CX 1 LX GND FB Ordering Information Current Limit AT1312AX SOT-26 400m A AT1312AX_GRE SOT-26, Green 400m A AT1312BX SOT-26 AT1312BX_GRE SOT-26, Green AT1312CX SOT-26 AT1312CX_GRE SOT-26, Green 300m A 300m A 200m A 200m A Part number Package OVP Protection 28V 28V 23V 23V 16V 16V Marking Date Code ,Date Code with one...