The MPQ7225 is a 16-channel, current sink LED driver, with a 200mA maximum current per channel. It provides an integrated differential interface, which is compatible with control area network (CAN) transceivers.
Adaptive feedback control (AFC) maximizes system efficiency. The pre-regulator output voltage (VOUT) is self-adjusted so that the voltage across the channel remains at the minimum headroom voltage (0.3V).
The MPQ7225 is designed to work with a high-speed differential interface. It employs both a 12-bit pulse-width modulation (PWM) dimming register and a 6-bit analog dimming register for each LED channel. Frequency spread spectrum (FSS) optimizes the LED current ramp rate and EMC performance. It also features a configurable phase shift between channels.
The device provides the failsafe (/FS) pin for full diagnostics. Full protection features include LED open protection, LED short protection, and over-temperature protection (OTP). If a fault occurs and a protection is triggered, the /FS pin is pulled low and the fault register is set. The MPQ7225 is available in QFN-32 (5mmx6mm) package.
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