DESCRIPTION

The MP1477 is a fully integrated, highfrequency, synchronous, rectified, step-down,

switch-mode converter with internal power

MOSFETs. The MP1477 offers a very compact

solution that achieves 3A of continuous output

current with excellent load and line regulation

over a wide input range. The MP1477 uses

synchronous mode operation for higher

efficiency over the output current-load range.

Constant-on-time (COT) control operation

provides very fast transient response, easy loop

design, and very tight output regulation.

Full protection features include short-circuit

protection (SCP), over-current protection (OCP),

under-voltage protection (UVP), and thermal

shutdown.

The MP1477 requires a minimal number of

readily available, standard, external

components and is available in a space-saving

SOT563 (1.6mmх1.6mm) package.

FEATURES

 Wide 4.2V to 17V Operating Input Range

 58mΩ/27mΩ Low RDS(ON) Internal Power

MOSFETs

 200µA Low IQ Current

 High-Efficiency Synchronous Mode

Operation

 Power Save Mode (PSM) at Light Load

 Fast Load Transient Response

 800kHz Switching Frequency

 Internal Soft Start (SS)

 Over-Current Protection (OCP) and Hiccup

 Thermal Shutdown

 Output Adjustable from 0.8V

 Available in a SOT563 (1.6mmх1.6mm)

Package

APPLICATIONS

 Security Cameras

 Digital Set-Top Boxes

 Flat-Panel Televisions and Monitors

 General Purposes