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AT1313 - High Efficiency Constant Current White-LED Driver

Description

The AT1313 step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices.

Features

  • allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LED’s brightness. The fast 1.4 MHz current-mode PWM control allows for smaller capacitor and inductor. Fault condition protection uses cycle-by-cycle current limiting to sense maximum inductor current, thermal protection and over-voltage protection. Also included soft-start eliminates inrush current during start-up. The 0.2V low reference.

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Datasheet Details

Part number AT1313
Manufacturer Aimtron Technology
File Size 215.37 KB
Description High Efficiency Constant Current White-LED Driver
Datasheet download datasheet AT1313 Datasheet

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Full PDF Text Transcription

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www.DataSheet4U.com AT1313 High Efficiency, Constant Current White-LED Driver Feature •Operating Voltage:2.5V~5.5V •High Operating Frequency: 1.4MHz •High Output Voltage: Up to 18V •Shutdown Current <1µA •18V Output Over-voltage protection •Digital Dimming Control. •Built-in Cycle-by Cycle Current-limiting. •Built-in Soft-Start Function. •0.2V Low Reference Voltage •Tiny SOT-26 Package Description The AT1313 step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LED’s brightness. The fast 1.
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