Monolithic Power Systems MP3425

Description

The MP3425 is a current mode step-up converter with a 3.5A, 90mΩ internal switch to provide a highly efficient regulator with fast response. The MP3425 features a programmed frequency up to 2MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting loop dynamics, and operates with small, low-ESR ceramicoutput capacitors. Soft-start results in small inrush current and can be programmed with an external capacitor. The MP3425 operates from an input voltage as low as 3.1V and can generate 48V at up to 350mA from a 12Vsupply.The MP3425 includes under-voltage lockout, current limiting and thermal overload protection to prevent damage in the event of an output overload. The MP3425 is available in a low profile 14-pin 3x4mm QFN package withexposed pad.

Features

• 3.5A, 90mΩ, 55V Power MOSFET
• Uses Tiny Capacitors and Inductors
• Wide input range: 3.1V to 22V
• Output Voltage as High as 55V
• Programmable Fsw: 300kHz – 2 MHz
• Programmable UVLO, Soft-Start, UVLO Hysteresis
• Micropower shutdown <1μA
• Thermal Shutdown 160 °C
• Available in 14-Pin 3x4mm QFN Package

Typical applications

• Telecom – Power Supply
• Audio - Microphone and Tuner Bias
• Automotive

More information

• Datasheet
• IC product information