DESCRIPTION

The MP1653A is a fully integrated, highfrequency, synchronous, rectified, step-down

switch-mode converter with internal power

MOSFETs. The MP1653A offers a very

compact solution that can achieve up to 3A of

continuous output current (IOUT) across a wide

input voltage (VIN) range, with excellent load

and line regulation. Synchronous mode

provides high efficiency across the entire IOUT

load range.

Constant-on-time (COT) control provides fast

transient response, easy loop design, and tight

output regulation.

Full protection features include short-circuit

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

under-voltage protection (UVP), and thermal

shutdown.

The MP1653A requires a minimal number of

readily available, standard external

components, and is available in a space-saving

SOT563 (1.6mmх1.6mm) package.

FEATURES

 Forced Pulse-Width Modulation (PWM)

Mode

 1.2MHz Switching Frequency (fSW)

 Output Adjustable from 0.6V

 Wide 4.2V to 17V Operating Input Voltage

(VIN) Range

 63mΩ and 36mΩ Low RDS(ON) Internal Power

MOSFETs

 200µA Low Quiescent Current (IQ)

 High-Efficiency Synchronous Mode

 Fast Load Transient Response

 Internal Soft Start (SS)

 Over-Current Protection (OCP) with Hiccup

Mode

 Thermal Shutdown

 Available in a SOT563 (1.6mmх1.6mm)

Package

APPLICATIONS

 Routers and Access Points (APs)

 Security Cameras

 Digital Set-Top Boxes

 Flat-Panel Televisions and Monitors

 General-Purpose Power Supplies