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MAX16800 - Adjustable Linear High-Brightness LED (HB LED) Driver

General Description

The MAX16800 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.

The output current of the MAX16800 is adjusted by using an external current-sense resistor in series with the LEDs.

Key Features

  • V to +40V Operating Range Adjustable Level (35mA to 350mA) ±3.5% Output Current Accuracy Integrated Pass Element with Low-Dropout Voltage (0.5V typ) Output Short-Circuit Protection +5V Regulated Output with 4mA Source Capability Thermal Shutdown Differential LED Current Sense High-Voltage Enable Pin for Dimming Interface Low Shutdown Supply Current (12μA typ) Low 204mV Current-Sense Reference Reduces Power Losses Wave-Shaped Soft Edges Reduce Radiated EMI During PWM Dimming Available in Small, T.

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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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19-3803; Rev 1; 4/09 www.DataSheet4U.com High-Voltage, 350mA, Adjustable Linear High-Brightness LED (HB LED) Driver General Description The MAX16800 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. The output current of the MAX16800 is adjusted by using an external current-sense resistor in series with the LEDs. An enable input allows wide-range “pulsed” dimming. Wave-shaping circuitry reduces EMI. The differential current-sense input increases noise immunity. The MAX16800 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.