Analog Devices / Maxim Integrated MAX20444C Automotive 4-Channel Backlight Drivers

Analog Devices MAX20444C Automotive 4-Channel Backlight Drivers feature integrated current outputs that can sink up to 130mA LED current each. The Analog Devices MAX20444C accepts a wide 4.5V to 36V input voltage range and withstands direct automotive load-dump events. The internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in the frequency range 400kHz to 2.2MHz.

Features

Wide-voltage-range operation
- Operates down to 4V supply after startup
- Survives load dump up to 52V
High integration
- Complete 4-channel solution including boost controller
- I²C control for minimum parts count
- Robust and low EMI
- Spread-spectrum oscillator
- Phase-shifting
- 400kHz to 2.2MHz switching-frequency range
- Fail-safe operation mode using the FSEN pin
Versatile dimming scheme allows hybrid or PWM-only dimming using DIM input or I²C
- Dimming ratio > 10000:1 using hybrid dimming
- 10000:1 dimming ratio at 200Hz using PWM dimming

Complete diagnostics
- LED open/short detection and protection
- Boost output undervoltage and overvoltage
- Boost voltage
- Individual string LED current
- Thermal shutdown
Compact (4mm x 4mm) 24-pin TQFN and SWTQFN packages
Central information displays
Infotainment displays
Instrument clusters

Analog Devices / Maxim Integrated MAX20444C Automotive 4-Channel Backlight Drivers

Features

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