MPQ4456

1A, 4MHz, 36V Step-Down Converter

アクティブ

Datasheet

概要

The MPQ4456 is a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 1 A 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-down applications, including those in automotive systems. A 120µA operational quiescent current is suitable for use in battery-powered applications. Special controlled circuitry allows the MPQ4456 to maintain PWM operation at low output currents. This lowers noise by reducing the pulse skipping. By switching at 4MHz, the MPQ4456 prevents EMI (Electromagnetic Interference) noise problems, such as those found in AM radio and ADSL applications. The MPQ4456 is available in thin 10-pin 3mm x 3mm TQFN package.

機能と利点

Guaranteed Industrial Temp Range
120μA Quiescent Current
Wide 3.8V to 36V Operating Input Range
300mΩ Internal Power MOSFET
Up to 4MHz Programmable Switching Frequency
Ceramic Capacitor Stable
Internal Soft-Start
Extended PWM Operation Reduces Noise
Up to 95% Efficiency
Output Adjustable from 0.8V to 36V
Available in 10-Pin 3x3 TQFN Package

Evaluation Tools

EVQ4456-QT-00A Evaluation Kit 1A, 36V, 4MHz Step-Down Converter Evaluation Board

The EVQ4456-QT-00A is an evaluation board for the MPQ4456, a high frequency step-down regulator with an integrated power MOSFET.

The MPQ4456 integrates a 300mΩ MOSFET that provides 1A load current over a wide operating input voltage of 3.8V to 36V.

Current mode control provides fast transient response and eases loop stabilization. An internal soft-start prevents inrush current at turn-on.

The EVQ4456-QT-00A is a fully assembled and tested PCB. It generates a +3.3V output voltage at load current up to 1A from an 8V to 36V input range. Switching frequency is set at 500kHz.

￥5,432.50
+ tax