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A8430

Part Number A8430
Manufacturer Allegro MicroSystems
Description White LED Driver Constant Current Step-up Converter
Published Mar 14, 2007
Detailed Description com A8430 White LED Driver Constant Current Step-up Converter The A8430 is a noninverting boost convert...
Datasheet A8430




Overview
com A8430 White LED Driver Constant Current Step-up Converter The A8430 is a noninverting boost converter that steps-up the input voltage, to provide a programmable constant current output at up to 36 V for driving white LEDs in series.
Driving LEDs in series ensures identical currents and uniform brightness.
Up to four white LEDs can be driven at 20 mA from a single cell Li-ion or a multicell NiMH power source.
Up to seven white LEDs can be driven by increasing the supply voltage up to 10 V.
The A8430 incorporates a power switch and feedback sense amplifier to provide a solution with minimum external components.
The output current can be set by adjusting a single external s...






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