home products Semiconductors Power DC-DC Power Conversion MPQ4558-AEC1 1A 2MHz 55V Step-Down Converter Light-Load Efficiency
MPQ4558-AEC1 1A 2MHz 55V Step-Down Converter Light-Load Efficiency
MPQ4558-AEC1

MPQ4558-AEC1 1A 2MHz 55V Step-Down Converter Light-Load Efficiency

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Pricing Table

The MPQ4558 is a high-frequency, step-down switching regulator with an integrated internal high-side high-voltage power MOSFET.

Product Detail

The MPQ4558 is a high-frequency, step-down switching regulator with an integrated internal high-side high-voltage power MOSFET. It provides up to a 1A output with current-mode control for fast loop response and easy compensation. The wide 4.5V-to-55V input range accommodates a variety of step-down applications, including automotive input. A 12µA shutdown-mode supply current makes it suitable for battery-powered applications. A scaled-down switching frequency in light-load conditions provides high power-conversion efficiency over a wide load range while reducing switching and gate driver losses. The frequency fold-back prevents inductor current runaway during startup and thermal shutdown provides reliable, fault-tolerant operation. By switching at 2MHz, the MPQ4558 can prevent EMI (electromagnetic interference) noise problems, such as those found in AM radio and ADSL applications. The MPQ4558 is available in an SOIC8E and a 10-pin 3mm x 3mm QFN package.

Pricing Table

Technical Specification

Vin (min) (V):
3.8
Vin (max) (V):
55
Iout (max) (A):
1
Grade:
Automotive
Package:
QFN-10 (3x3)
Type:
Switching Regulators
Iq (typ) (mA):
0.14
fsw (max) (kHz):
2000
Special Features:
Programmable Frequency
Vfb (typ) (V):
0.8
Common Features:
Light-Load Efficiency
Control Mode:
Current Mode

Additional Documentation

Manufacturer

Monolithic Power Systems (MPS)

Monolithic Power Systems, Inc. (MPS) provides small, highly energy efficient, easy-to-use power solutions for systems found in industrial applications, telecom infrastructures, cloud computing, automotive, and consumer applications.

Learn about Monolithic Power Systems (MPS)

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