DESCRIPTION
The MP2172C is a monolithic, step-down,
switch-mode converter with built-in internal
power MOSFETs. It achieves 2A of continuous
output current from a 2.38V to 5.5V input
voltage range with excellent load and line
regulation. The output voltage can be regulated
as low as 0.6V.
The constant-on-time (COT) control scheme
provides fast transient response and eases loop
stabilization. Fault protections include cycle-bycycle
current limiting and thermal shutdown.
The MP2172C is ideal for a wide range of
applications, including high-performance DSPs,
wireless power, portable and mobile devices,
and other low-power systems.
The MP2172C requires a minimal number of
readily available, standard external components,
and is available in ultra-small 1.2mmx1.6mm
UTQFN packages.

FEATURES
 Fixed-Frequency PWM Mode
 1.1MHz Switching Frequency
 EN for Power Sequencing
 1% FB Accuracy
 Wide 2.38V to 5.5V Operating Input Range
 Output Adjustable from 0.6V
 Up to 2A Output Current
 75mΩ and 45mΩ Internal Power MOSFET
Switches
 100% Duty On
 Output Discharge
 VOUT Over-Voltage Protection (OVP)
 Short-Circuit Protection (SCP) with Hiccup
Mode
 Available in a UTQFN (1.2mmx1.6mm)
Package

APPLICATIONS
 Wireless/Networking Cards
 Portable Instruments
 Battery-Powered Devices
 Low-Voltage I/O System Power
 Multi-Function Printers
 Solid-State Drives