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MIC33153 - 4MHz PWM 1.2A Internal Inductor Buck Regulator

General Description

The MIC33153 is a high-efficiency 4MHz 1.2A synchronous buck regulator with an internal inductor, HyperLight Load™ mode, Power Good (PG) output indicator, and programmable soft start.

Key Features

  • Internal inductor.
  • Simplifies design to two external capacitors.
  • Input voltage: 2.7V to 5.5V.
  • Output voltage: fixed or adjustable (0.62V to 3.6V).
  • Up to 1.2 A output current.
  • Up to 93% peak efficiency.
  • 85% typical efficiency at 1mA.
  • Power Good (PG) output.
  • Programmable soft start.
  • 22µA typical quiescent current.
  • 4MHz PWM operation in continuous mode.
  • Ultra-fast transient response.

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Datasheet Details

Part number MIC33153
Manufacturer MICREL
File Size 926.28 KB
Description 4MHz PWM 1.2A Internal Inductor Buck Regulator
Datasheet download datasheet MIC33153 Datasheet

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Full PDF Text Transcription (Reference)

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MIC33153 4MHz PWM 1.2A Internal Inductor Buck Regulator with HyperLight Load™ and Power Good General Description The MIC33153 is a high-efficiency 4MHz 1.2A synchronous buck regulator with an internal inductor, HyperLight Load™ mode, Power Good (PG) output indicator, and programmable soft start. HyperLight Load™ provides very high efficiency at light loads and ultra-fast transient response which makes the MIC33153 perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors. The MIC33153 is designed so that only two external capacitors as small as 2.2µF are needed for stability.