MP4568 Datasheet | Monolithic Power Systems

DESCRIPTION The MP4568 is a high-frequency, step-down, switching regulator with integrated highside/low-side, high-voltage power MOSFETs. It provides a highly efficient output of up to 100m A. 60V rated MOSFETs and 4.5V to 45V operation range acmodates a variety of step-down applications in automotive input environment. A 5μA shutdown mode quiescent current allows use in battery-powered applications. It allows for high power conversion efficiency over a wide load range by scaling down the switching frequency under light-load condition to reduce the switching and gate driver losses. The switching frequency during start-up and short circuit also can be scaled down to helps prevent inductor current runaway. Thermal shutdown provides reliable, fault-tolerant operation. The MP4568 is available in a 3mmx3mm QFN10 package. TYPICAL APPLICATION VIN R3 2M R4 100k BST 1 U1 10 IN C2 0.1u F SW 2 C1 10u F 9 EN 8 ENHY 6 ILIM 7 SS BIAS 4 FB 5 L1 100u H C3 22u F 5V/100m A VOUT R1 1.2M R2 300k FEATURES - 20μA Quiescent Current - Wide 4.5V to 45V Operating Range with 50V Input OVP - 60V Integrated MOSFETs with 0.7Ω and 2.25Ω Ron - Programmable Switching Frequency - Stable with Ceramic Output Capacitors - Low Output Ripple - Programmable Soft-Start - Adjustable Input UVLO Hysteresis - Precision Peak Current Limit without Current-Sensing Resistor - Programmable Peak Current Limit - >90% Efficiency at 10V VIN to 5V VOUT/2m A - 1.0V Feedback Reference Voltage - Low Shutdown Mode Current: <5μA - 3mmx3mm QFN10...