AL9901 Universal High-Voltage LED Driver

Diodes high-input voltage PWM LED driver provides a simple, efficient solution for universal input high-brightness LED lamps

AL9901 buck LED driver creates a constant LED current programmed by one external resistor. It offers a switching frequency up to 300 kHz determined by an external single resistor. The LED brightness can be varied by both linear and PWM dimming using the AL9901¡¯s LD and PWM pins respectively. The PWM input operates with duty ratio of 0 to 100% and frequency of up to several kHz. The AL9901 is available in the SO-16 and also the thermally enhanced DFN6040-12 packages.

Features

High-voltage MOSFET up to 650 V, 2 A

Internal high-voltage regulator removes start-up resistor

LED brightness control through linear and PWM dimming

Thermal enhanced U-DFN6040-12, and SO-16 packages

Applications

LED offline lamps

High-voltage DC-DC LED driver

Signage and decorative LED lighting

Back lighting of flat panel displays

General purpose constant current source

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