The MPQ70336FS-AEC1 is an ASIL-D hardware capable power management IC (PMIC) featuring a buck converter and an integrated, 4-channel voltage monitor. It is engineered for automotive safety applications that require an off-battery safety power supply and additional voltage rails monitored for safety.

The MPQ70336FS-AEC1 features a synchronous, step-down switching regulator that provides up to 4A of peak output current (I_OUT) with peak current mode control. The configurable switching frequency (f_SW) ranges between 350kHz and 2.5MHz.

High power conversion efficiency across a wide load range is achieved by scaling down f_SW under light-load conditions to reduce the switching and gate driving losses. Frequency foldback helps prevent inductor current (I_L) runaway during start-up. Thermal shutdown provides fault-tolerant operation.

Each of the four voltage monitor inputs has configurable over-voltage (OV) and under-voltage (UV) thresholds. Highly accurate high-frequency (HF) and low-frequency (LF) voltage monitoring can detect when the voltage thresholds are reached. Two of the inputs are differential, making them optimal for remote voltage-sensing to monitor rails with high current levels.

The MPQ70336FS-AEC1 can record the order in which voltage rails are sequenced, as well as their associated timestamps. The device is accessible through an I²C interface.

With the integration of sophisticated functional safety features including built-in self-testing (BIST), diagnostics, and write protection, this device is targeted to support applications with a high automotive safety integrity level up to ASIL-D.

The MPQ70336FS-AEC1 is available in a TQFN-25 (3mmx6mm) package with wettable flanks.