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MP21148 - Step-Down Converter

General Description

The MP21148 is a monolithic, step-down, switch-mode converter with built-in, internal power MOSFETs.

It can achieve 1A of continuous output current from a 2.3V-to-5.5V input voltage with excellent load and line regulation.

The output voltage can be regulated as low as 0.6V.

Key Features

  • 2.4MHz Switching Frequency.
  • EN for Power Sequencing.
  • Wide 2.3V-to-5.5V Operating Input Range.
  • Output Adjustable from 0.6V.
  • Up to 1A of Output Current.
  • 120mΩ and 80mΩ Internal Power MOSFET Switches.
  • Output Discharging.
  • 100% Duty Cycle.
  • Short-Circuit Protection (SCP) with Hiccup Mode.
  • Stable with Low ESR Output Ceramic Capacitors.
  • Available in a QFN-6 (1.0mmx1.5mm) Package.
  • Continuous Conduction Mode (CCM).

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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MP21148 1A, Synchronous, Step-Down Converter with CCM DESCRIPTION The MP21148 is a monolithic, step-down, switch-mode converter with built-in, internal power MOSFETs. It can achieve 1A of continuous output current from a 2.3V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6V. The constant-on-time control scheme in forced CCM provides a fast transient response, low output voltage ripple, and eases loop stabilization. Fault protections include cycle-bycycle current limiting and thermal shutdown. The MP21148 is available in an ultra-small QFN-6 (1.0mmx1.5mm) package and requires a minimal number of readily available, standard, external components.