Monolithic Power Systems MP2131

Description

The MP2131 is a monolithic step-down, switch- mode converter with built-in internal power MOSFETs. It achieves a 4 A continuous output current from a 2.7 V to 5.5 V input voltage with excellent load and line regulation. The MP2131 is ideal for powering portable equipment that run from a single cell lithium-ion (Li+) battery. The output voltage is regulated as low as 0.6 V.

The constant-on-time (COT) control scheme provides fast transient response, high light-load efficiency, and eases loop stabilization.

Fault condition protection includes cycle­by­cycle current limit and thermal shutdown.

The MP2131 requires a minimum number of readily available, standard, external components and is available in an ultra-small QFN-12 (2mm x 2mm) package.

The MP2131 is ideal for a wide range of applications including portable instruments, small handheld and battery–powered devices, PDAs, and DVD drives

Features

• -Wide 2.7 V to 5.5 V Operating Input Range

• -Output Voltage as Low as 0.6 V

• -4 A Output Current

• -35 mΩ and 18 mΩ Internal Power MOSFET

• -Above 96% Peak Efficiency

• -Above 80% Light Load Efficiency

• -Low IQ: 19 μA

• -1.2 MHz Frequency

• -100% Duty Cycle in Dropout

• -0.5 ms Internal Soft-Start Time

• -EN and Power Good for Power Sequencing

• -Auto Discharge at EN Off

• -Short-Circuit Protection with Hiccup Mode

• -Available in a QFN-12 (2mm x 2mm) Package

Typical applications

• Storage Drives
• Low Voltage I/O System Power
• Portable/Handheld Devices
• Wireless/Networking Cards

More information

• Datasheet
• IC product information