Monolithic Power Systems MPQ4460

Description

The MPQ4460 is a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 2.5A output with current mode control for fast loop response and easy compensation.

The wide 3.8V to 36V input range accommodates a variety of step-downapplications, including those in an automotive input environment. A 120µA operational quiescent current allows use in battery-powered applications.

High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses.

The frequency foldback helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation.

By switching at 4MHz, the MPQ4460 is able to prevent EMI (Electromagnetic Interference) noise problems, such as those found in AM radio and ADSL applications.

The MPQ4460 is available in a small 3mm x 3mm QFN10 package.

Features

• Guaranteed Industrial Temp Range Limits
• 120μA Quiescent Current
• Wide 3.8V to 36V Operating Input Range
• 150mΩ Internal Power MOSFET
• Up to 4MHz Programmable Switching Frequency
• Ceramic Capacitor Stable
• Internal Soft-Start
• Internally Set Current Limit without Current Sensing Resistor
• Up to 95% Efficiency
• Output Adjustable from 0.8V to 30V
• Available in a 3mm x 3mm QFN10 Package

Note:Inductor selection guide is given in page no 11.

Typical applications

• Industrial Power Systems
• High Voltage Power Conversion
• Battery Powered Systems
• Automotive Systems
• Distributed Power Systems

More information

• Datasheet
• IC product information