Product Details

Monolithic Power Systems (MPS) MP2451 Step-Down Converter

Monolithic Power Systems (MPS) MP2451 Step-Down Converter is a high frequency (2MHz) switching regulator with an integrated internal high-side, high voltage power MOSFET. The MP2451 Step-Down Converter provides a single highly efficient 0.6A (or less) output with current mode control for fast loop response. The wide 3.3V to 36.0V input range accommodates a variety of step-down applications in the automotive input environment. A 1μA shutdown mode 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 conditions to reduce the switching and gate-driving losses. Frequency fold-back helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation.

The MP2451 Step-Down Converter is available in SOT-23-6 and TSOT-23-6 packages and is Lead-Free and RoHS Compliant.

FEATURES

• 130μA operating quiescent current

• Wide 3.3V to 36.0V 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 0.8xVIN

• Low 3μA shutdown supply current

• -40°C to +125°C operating junction temperature

• Package options

  • SOT-23-6

  • TSOT-23-6

• Lead-free and RoHS compliant

APPLICATIONS

• High voltage power conversion

• Automotive systems

• Industrial power systems

• Distributed power systems

• Battery powered systems

BLOCK DIAGRAM

TYPICAL APPLICATION CIRCUIT

Product Description

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