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The MAX20444CATG/V+ is a 4-channel backlit driver IC that integrates a boost controller for automotive displays. Integrated current output each provides up to 130mA of LED current absorption. The device accepts a wide input voltage range from 4.5V to 36V and can withstand direct automotive load drop events.

Internal current mode switch DC-DC controllers support boost or SEPIC topologies and operate from 400kHz to 2.2MHz. Integrated spread spectrum helps reduce EMI. The adaptive output voltage control scheme fully reduces the power consumption in the LED current absorption path.

Features:

• Wide operating voltage range

- After starting, the operating voltage is lowered to 4V supply voltage

- Withstand sudden load drops of up to 52V

• High integration

- Complete 4-channel solution including boost controller

- I2C control, the number of devices required is small

• Reliable low EMI

- spread spectrum oscillator

- Phase shift

- Switching frequency range: 400kHz to 2.2MHz

- Fail-safe operating mode using FSEN pins

• Multi-function dimming solutions are available for hybrid or pure PWM dimming using DIM inputs or I2C

- Achieve a dimming ratio of > 10,000:1 using hybrid dimming

- Use PWM dimming to achieve 10,000:1 dimming ratio (at 200Hz)

• Complete diagnosis

- LED open/short circuit detection and protection

- Boost output undervoltage and overvoltage

- Boost voltage measurement

- LED current measurement

- Heat off

• Compact (4mm x 4mm) 24-pin TQFN and SWTQFN packages

Applications:

Central information display

Infotainment display

Instrument cluster

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