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MIC4742 - 2MHz Dual 2A Integrated Switch Buck Regulator

Description

The Micrel MIC4742 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output.

The MIC4742 operates at 2MHz.

A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz.

Features

  • 2.9 to 5.5V supply voltage.
  • 2MHz PWM mode.
  • 2A Dual output.
  • Greater than 92% efficiency.
  • 100% maximum duty cycle.
  • Adjustable output voltage option down to 0.6V.
  • Ultra-fast transient response.
  • Ultra-small external components Stable with a 1µH inductor and a 4.7µF output capacitor.
  • Fully integrated 2A MOSFET switches.
  • Micro-power shutdown.
  • Thermal shutdown and current limit protection.
  • Avail.

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Datasheet preview – MIC4742

Datasheet Details

Part number MIC4742
Manufacturer Micrel Semiconductor
File Size 590.69 KB
Description 2MHz Dual 2A Integrated Switch Buck Regulator
Datasheet download datasheet MIC4742 Datasheet
Additional preview pages of the MIC4742 datasheet.

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Full PDF Text Transcription

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MIC4742 2 MHz Dual 2A Integrated Switch Buck Regulator General Description The Micrel MIC4742 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output. The MIC4742 operates at 2MHz. A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz. The low on-resistance internal P-Channel MOSFET of the MIC4742 allows efficiencies over 92%, reduces external components count and eliminates the need for an expensive current sense resistor. The MIC4742 operates from 2.9V to 5.5V input and the output can be adjusted down to 0.6V. The device can operate with a maximum duty cycle of 100% for use in lowdropout conditions.
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