MP28373

MP28373

NOT RECOMMENDED FOR NEW DESIGNS

3A, 28V, 1.4MHz Step-Down Converter

ALTERNATIVE PART

NRFND Datasheet

MP28373 continues to be in production for existing customers. Please consider this alternative for new designs:

MP2223

18V, Dual-Channel 3A/2A, 540kHz, Synchronous, Step-Down Converter in 8-Pin TSOT23 Package

Features & Benefits

Wide 4.5V to 18V OperatingInputRange
70mΩ/50mΩ for Ch1, 100mΩ/60mΩ for Ch2, Low R_DS(ON) Internal Power MOSFETs
Up to 3A (Ch1) and 2A (Ch2) Maximum Continuous Output Current
180° Out-of-Phase Operation
Power-Save Mode for Light Load
540kHz Fixed Switching Frequency
Over-Current Protection (OCP) and Hiccup
Over-Voltage Protection (OVP )
Thermal Shutdown
Both Channel Outputs Adjustable from 0.8V
Available in a TSOT23-8 Package

… and many more!

Description

The MP28373 is a 1.4MHz step-down regulator with a built-in power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. Adjustable soft-start reduces the stress on the input source at turn-on. In shutdown mode, the regulator draws 20μA of supply current. The MP28373 is available in an 8-pin SOIC package with an exposed pad, and requires a minimum number of readily available external components to complete a 3A step-down DC to DC converter solution.