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Analog Devices Inc. MAX25014 Automotive 4-Channel Backlight Driver features I2C-controlled pulse-width-modulation (PWM) dimming and hybrid dimming, making it ideal for use in vehicle instrument clusters and infotainment displays. The integrated current outputs of the can sink up to 150mA LED current each. The device accepts a wide 2.5V to 36.0V input voltage range and withstands automotive load-dump events.
The internal current-mode switching DC-DC controller supports boost or SEPIC topologies and operates in the 400kHz to 2.2MHz frequency range. The integrated spread spectrum helps reduce EMI. An adaptive output-voltage-control scheme minimizes power dissipation in the LED current-sink paths.
Control is included for an external nMOSFET series switch to reduce quiescent current when the backlight is off and to disconnect the boost converter in the case of a fault.
The AEC-Q100 qualified MAX25014 is available in a 24-pin TQFN package and is designed to operate over the -40°C to +125°C temperature range.
