AT1312B – High Efficiency Constant Current White-LEDs Driver

AT1312B Datasheet PDF learn more.

Part number : AT1312B

Functions : This is a kind of semiconductor. High Efficiency Constant Current White-LEDs Driver.

Pin arrangement :

Package information :

Manufacturer : Aimtron Technology

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AT1312B Datasheet PDF

The texts in the PDF file :

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,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW: http://www.aimtron.com.tw 2/23/2006 REV:1.1 Email: service@aimtron.com.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 2 3 GND FB Ordering Information Current Limit AT1312AX SOT-26 400mA AT1312AX_GRE SOT-26, Green 400mA AT1312BX SOT-26 AT1312BX_GRE SOT-26, Green AT1 [ ... ]

AT1312B PDF File



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