The MPQ76233FS-AEC1 is an infrared (IR) LED/VCSEL driver with integrated eye safety features for automotive driver monitoring systems (DMS) and occupant monitoring systems (OMS). The device features a buck stage to deliver up to 10A of peak output current (I_OUT) to drive IR LED/VCSEL strings.

The MPQ76233FS-AEC1 can support a pulse-width modulation (PWM) dimming frequency as low as 10Hz, and is compatible with 30FPS/60FPS/120FPS dimming. The device uses fixed-frequency band-band control with configurable switching frequency (f_SW) options of 420kHz or 2.2MHz.

An analog-to-digital converter (ADC) is integrated to monitor the input voltage (V_IN), LED current, output voltage (V_OUT), and junction temperature (T_J). Configurable protection features via an I²C digital interface include dimming on time limit, FPS dimming limit, LED short-to-GND/battery, LED open protection, over-current protection (OCP), over-voltage protection (OVP), and thermal warning/shutdown (TSD). Fault and diagnostic data can be read, and an open-drain fail-safe (/FS) pin asserts low during such conditions.

The MPQ76233FS-AEC1 is ISO 26262 ASIL-B hardware capable rated. Safety mechanisms such as built-in self-testing (BIST) provide high diagnostic coverage, which help the system achieve its target ASIL rating. It is developed under MPS's advanced MPSafe^TM functional safety product development process, which has been independently certified to meet ISO 26262 guidelines.

The MPQ76233FS-AEC1 requires a minimal number of standard external components, and is available in a space-saving QFN-21 (4mmx4mm) wettable-flank package.