DESCRIPTION

The MP2174C is a monolithic, step-down,

switch mode converter with built-in, internal

power MOSFETs. It achieves 4A of continuous

output current from a 2.7V to 5.5V input voltage

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 easy loop

stabilization.

Fault condition protections include

cyclebycycle

current limit and thermal

shutdown.

The MP2174C requires a minimal number of

readily available, standard external

components, and is available in an ultra-small

QFN-12 (2mmx2mm) package.

The MP2174C is ideal for a wide range of

applications, including PDAs, portable

instruments, DVD drives, and small handheld

devices.

FEATURES

 Forced PWM Mode Operation

 Wide 2.7V to 5.5V Operating Input Range

 Output Voltage as Low as 0.6V

 4A Output Current

 35mΩ and 18mΩ Internal Power MOSFET

 Peak Efficiency Above 96

 1.1MHz Frequency

 100 Duty Cycle in Dropout

 0.5ms Internal Soft-Start Time

 EN and Power Good for Power Sequencing

 Auto-Discharge at Power-Off

 Short-Circuit Protection with Hiccup Mode

 Available in a QFN-12 (2mmx2mm)

Package

APPLICATIONS

 Storage Drives

 Portable/Handheld Devices

 Low-Voltage I/O System Power