Monolithic Power Systems MP2145

Description

The MP2145 is a monolithic, step-down, switch-mode converter with internal power MOSFETs. It can achieve up to 6A continuous output current from a 2.8V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V.

Constant-on-time control provides a fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown.

The MP2145 is available in a small QFN2×3mm package and requires only a minimal number of readily-available, standard, external components.

The MP2145 is ideal for a wide range of applications, including storage (SSD, HDD), high-performance DSPs, FPGAs, and distributed power systems.

Features

• Up to 6A Output Current
• Wide 2.8V-to-5.5V Operating Input Range
• 20mΩ and 12mΩ Internal Power MOSFETs
• 40µA Quiescent Current
• 1.2MHz Fixed Switching Frequency
• 1% Feedback Accuracy
• External Mode Control
• External VCON Control
• Adjustable Output from 0.6V
• 1.5ms Internal SS Time with Pre-Bias Startup
• Cycle-by-Cycle Over Current Protection
• Short Circuit Protection with Hiccup Mode
• Stable with Low-ESR Output Ceramic Capacitors
• Thermal Shutdown
• Available in a 2mm×3mm QFN Package
• Output Discharge Function

Typical applications

• Battery-Powered Devices
• Portable Instruments
• Storage (SSD, HDD)

More information

• Datasheet
• IC product information