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ML4870 - High Current Boost Regulator with Load Disconnect

General Description

The ML4870 is a continuous conduction boost regulator designed for DC to DC conversion in multiple cell battery power 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 Pulse Frequency Modulation and internal synchronous rectification for high efficiency Isolates the load from the input during shutdown Minimum external components Low ON resistance internal switching FETs Low supply current 5V and 3.3V output versions s s s s s s s.
  • Some Packages Are Obsolete BLOCK.

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Datasheet Details

Part number ML4870
Manufacturer Micro Linear
File Size 211.36 KB
Description High Current Boost Regulator with Load Disconnect
Datasheet download datasheet ML4870 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 PRELIMINARY ML4870* High Current Boost Regulator with Load Disconnect GENERAL DESCRIPTION The ML4870 is a continuous conduction boost regulator designed for DC to DC conversion in multiple cell battery power 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 ML4870 is capable of start-up with input voltages as low as 1.8V, and is available in 5V and 3.3V output versions with an output voltage accuracy of ±3%. An integrated synchronous rectifier eliminates the need for an external Schottky diode and provides a lower forward voltage drop, resulting in higher conversion efficiency.