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RC4391 - Inverting And Step-down Switching Regulator

General Description

Fairchild Semiconductor’s RC4391 is a monolithic switch mode power supply controller for micropower circuits.

The RC4391 integrates all the active functions needed for low power switching supplies, including oscillator, switch, reference and logic, into a small package.

Key Features

  • Versatile.
  • Inverting function (+ to -) Step-down function Adjustable output voltage Regulates supply changes.
  • Micropower.
  • Low quiescent current.
  • 170 mA Wide supply range.
  • 4V to 30V.
  • High performance.
  • High switch current.
  • 375 mA High efficiency.
  • 70% typically.
  • Low battery detection capability.
  • 8-lead mini-DIP or S. O. package.

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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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www.fairchildsemi.com RC4391 Inverting and Step-Down Switching Regulator Features • Versatile — Inverting function (+ to -) Step-down function Adjustable output voltage Regulates supply changes • Micropower — Low quiescent current — 170 mA Wide supply range — 4V to 30V • High performance — High switch current — 375 mA High efficiency — 70% typically • Low battery detection capability • 8-lead mini-DIP or S.O. package Description Fairchild Semiconductor’s RC4391 is a monolithic switch mode power supply controller for micropower circuits. The RC4391 integrates all the active functions needed for low power switching supplies, including oscillator, switch, reference and logic, into a small package.