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