The MPQ3321-AEC1 is a 48-channel LED driver with a 22V voltage rating and maximum 80mA current sources. It is designed to drive the LED arrays for local dimming backlighting in automotive LCD panels.

The MPQ3321-AEC1 employs low headroom to regulate the LED current (I_LEDx, where x = 1–48). The adaptive voltage feedback function optimizes the LED voltage (V_LEDx, where x = 1–48), which achieves higher system efficiency.

The MPQ3321-AEC1 supports independent 16-bit pulse-width modulation (PWM) and 7-bit analog dimming for each channel via the serial interface.

The configurable internal registers provide reliable and flexible application. The 25MHz serial interface clock guarantees a high data transfer rate for multiple devices operating in a daisy chain application.

Robust protections are included to guarantee safe operation of the device. Protection modes include LED open protection, LED short protection, and over-temperature protection (OTP). All fault statuses can be read through the serial interface.

The MPQ3321-AEC1 is available in a QFN-68 (8mmx8mm) package, and it is available in AEC-Q100 Grade 0.