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MAX16835 - Adjustable Linear High-Brightness LED Driver

General Description

The MAX16835 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 MAX16835 is adjusted by using an external current-sense resistor in series with the LEDs.

Key Features

  • include a 5V regulated output and short-circuit and thermal protection. The MAX16835 is available in a thermally enhanced, 5mm x 5mm, 16-pin TQFN package and is specified over the automotive -40°C to +125°C temperature range. o o o o o o o o o o o o o o Features +6.5V to +40V Operating Range Adjustable LED Current (35mA to 350mA) ±3.5% Output Current Accuracy Integrated Pass Element with Low-Dropout Voltage (0.55V typ) Output Short-Circuit Protection +5V Regulated Output with 4mA Source Capabil.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-4028; Rev 1; 5/08 High-Voltage, 350mA, Adjustable Linear High-Brightness LED Driver General Description The MAX16835 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 MAX16835 is adjusted by using an external current-sense resistor in series with the LEDs. An enable input allows widerange “pulsed” dimming. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16835 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.