The MP4436/MP4436A is a synchronous, step-down switching regulator with a configurable frequency and integrated internal high-side and low-side power MOSFETs. It provides a maximum 6A of highly efficient output, as well as current mode control for a fast loop response.
The wide 3.3V to 45V input range accommodates a variety of step-down applications in an automotive input environment. A 1.7μA shutdown mode quiescent current allows the part to be used in battery-powered applications.
High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency in light-load conditions to reduce the switching and gate driver losses.
An open-drain power good signal indicates that the output is within 93% to 106% of its nominal voltage.
Frequency foldback helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation.
High duty cycle and low-dropout mode are provided for automotive cold crank conditions.
The MP4436/MP4436A is available in a QFN-20 (4mmx4mm) package.