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