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ML4771 - High Current Boost Regulator

General Description

The ML4771 is a continuous conduction boost regulator designed for DC to DC conversion in multiple cell battery powered systems.

Continuous conduction allows the regulator to maximize output current for a given inductor.

Key Features

  • s Guaranteed full load start-up and operation at 1.8V input Continuous conduction mode for high output current Very low supply current (20µA output referenced) for micropower operation Pulse Frequency Modulation and Internal Synchronous Rectification for high efficiency Maximum switching frequency > 200kHz Minimum external components Low ON resistance internal switching FETs Adjustable output voltage (3.0V to 5.5V) s s s s s s s (.
  • Indicates Part is End Of Life as of July 1, 2000) BLOC.

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Datasheet Details

Part number ML4771
Manufacturer Micro Linear
File Size 190.24 KB
Description High Current Boost Regulator
Datasheet download datasheet ML4771 Datasheet

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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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July 2000 ML4771* High Current Boost Regulator GENERAL DESCRIPTION The ML4771 is a continuous conduction boost regulator designed for DC to DC conversion in multiple cell battery powered systems. Continuous conduction allows the regulator to maximize output current for a given inductor. The maximum switching frequency can exceed 200kHz, allowing the use of small, low cost inductors. The ML4771 is capable of start-up with input voltages as low as 1.8V, and the output voltage can be set anywhere between 3.0V and 5.5V by an external resistor divider connected to the SENSE pin. An integrated synchronous rectifier eliminates the need for an external Schottky diode and provides a lower forward voltage drop, resulting in higher conversion efficiency.