MPQ4316-AEC1

The MPQ4316 is a configurable-frequency, synchronous, step-down switching converter with integrated internal high-side and low-side power MOSFETs. The device provides up to 6A of highly efficient output current (I_OUT) with current mode control for fast loop response. The wide 3.3V to 45V input voltage (V_IN) range accommodates a variety of step-down applications in automotive input environments. A 1.7μA shutdown mode quiescent current (I_Q) allows the device to be used in battery-powered applications.

The device achieves high power conversion efficiency across the wide load range by scaling down the switching frequency (f_SW) under light-load conditions to reduce switching and gate driver losses. An open-drain power good (PG) signal indicates when the output is within 95% to 105% of its nominal voltage.

Frequency foldback helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. The device provides a high duty cycle and low-dropout mode for automotive cold-crank conditions. The MPQ4316 is available in a QFN-20 (4mmx4mm) package.