The MP4316A is a synchronous, step-down switching converter with a configurable frequency and integrated, internal high-side MOSFET (HS-FET) and low-side MOSFET (LS-FET). The device provides up to 6A of highly efficient output current (IOUT), with current mode control for fast loop response.

The wide 3.3V to 45V input voltage (VIN) range accommodates a variety of step-down applications in automotive input environments. A 1.7μA quiescent current (IQ) in shutdown mode allows the device to be used in battery-powered applications.

The MP4316A achieves high power conversion efficiency across the wide load range by scaling down the switching frequency (fSW) 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 MP4316A provides a high duty cycle and low-dropout mode for automotive cold-crank conditions.

The MP4316A is available in a QFN-20 (4mmx4mm) package