Monolithic Power Systems MPQ2451

Description

The MPQ2451 is a high frequency, step-down, switching regulator with an integrated highvoltage high-side power MOSFET. It efficiently provides up to a 0.6A output with current-mode control for fast loop response.The wide 3.3V-to-36V input range accommodates a variety of automotive step-down applications,and the 3μA shutdown-mode quiescent currentallows use in battery-powered applications.The MPQ2451 achieves high power-conversion efficiency over a wide load range by scaling down the switching frequency under light-load condition to reduce the switching and gate driving losses.Frequency fold-back prevents inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation.The MPQ2451 is available in a cost-effective SOT23-6L and QFN-6L packages.

Features

• Guaranteed Industrial/Automotive Temp.Range Limits
• 130μA Operating Quiescent Current
• Wide 3.3V-to-36V Operating Input Range
• 500mΩ Internal Power MOSFET
• 2MHz Fixed Switching Frequency
• Internally Compensated
• Stable with Ceramic Output Capacitors
• Internal Soft-Start
• Precision Current Limit Without Current Sensing Resistor

• 90% Efficiency

• Output Adjustable from 0.8V to 0.9·VIN
• 6-Lead SOT23 and QFN Packages
• Available in AEC-Q100 Grade 1

Typical applications

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

More information

• Datasheet
• IC product information