Features

• Automotive qualified

• Constant current operation

• Current LED settable by external sensing

resistor and adjustable via SPI

• Converter switching frequency adjustable by

external resistor (RSF)

• EMC reduction by internal spread spectrum

dither oscillator

• Low frequency PWM dimming operation.

• Maximum input current limiter

• Maximum switching duty cycle limiter

• Slope compensation adjustable by external

resistor (R9)

• Battery overvoltage shut down protection (ext.

R3, R4 resistors required)

• Led chain OV detection (ext. R5, R6)

• Multiplexed output for monitoring and control of

LED temperature (external NTC resistor

required), voltage of LED chain, and low

frequency PWM

• SPI communication serial interface transceiver

(SDI, SDO, SCK, CSN)

• Regulated output for micro supply 5 V ± 2 %

-20 mA

• Parameter programming and settings of

internal memory registers by the dedicated SPI

interface:

– LED current reference adjusting (± 66.7 %)

– Maximum input current limiter reference

adjusting (± 55.5 %)

– Random dither frequency sweeping,

modulation frequency and deviation

percentage

• Power on reset pin output

• ESD protection