MAX16803ATE+T

MAXIM INTEGRATED PRODUCTS  MAX16803ATE+T  芯片, 发光二极管驱动器

The is a high voltage, 350mA, high brightness LED driver with PWM dimming and 5V regulator in 16 pin TQFN package. This current regulator operates from a 6.5V to 40V input voltage range and delivers up to a total of 350mA to one or more strings of high brightness LEDs HB LEDs. The output current of the MAX16803 is adjusted by using an external current-sense resistor in series with LEDs. A dimming input allows wide range "pulsed" PWM operation. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16803 is well suited for applications requiring high voltage input and is able to withstand automotive load-dump events up to 40V. An on-board pass element minimizes external components while providing ±3.5% output-current accuracy. It features include a 5V regulated output, short-circuit and thermal protection. Typical applications include emergency vehicle warning lights, indicators, general lighting, signage and beacons.

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Adjustable LED current of 35mA to 350mA

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Operating temperature range from -40°C to 125°C

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High voltage DIM pin for dimming interface

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Integrated pass element with low dropout voltage of 0.5V

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Parallel operation for LED current is greater than 350mA

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Differential LED current sense

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Shutdown current of 12µA

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Low 204mV current sense reference reduces power losses

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Wave shaped edges reduce radiated EMI during PWM dimming