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LM1770 - Low-Voltage SOT-23 Synchronous Buck Controller

General Description

The LM1770 is an efficient synchronous buck switching controller in a tiny SOT-23 package.

The constant on-time control scheme provides a simple design free of compensation components, allowing minimal component count and board space.

Key Features

  • 1.
  • 2 Input Voltage Range of 2.8V to 5.5V.
  • 0.8V Reference Voltage.
  • No Compensation Required.
  • Constant Frequency Across Input Range.
  • Low Quiescent Current of 400µA.
  • Internal Soft-start.
  • Short Circuit Protection.
  • 5-Pin SOT-23 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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LM1770 www.ti.com SNVS403C – SEPTEMBER 2005 – REVISED APRIL 2013 LM1770 Low-Voltage SOT-23 Synchronous Buck Controller With No External Compensation Check for Samples: LM1770 FEATURES 1 •2 Input Voltage Range of 2.8V to 5.5V • 0.8V Reference Voltage • No Compensation Required • Constant Frequency Across Input Range • Low Quiescent Current of 400µA • Internal Soft-start • Short Circuit Protection • 5-Pin SOT-23 Package APPLICATIONS • Simple To Design, High Efficiency Step Down Switching Regulators • Set-Top Boxes • Cable Modems • Printers • Digital Video Recorders • Servers DESCRIPTION The LM1770 is an efficient synchronous buck switching controller in a tiny SOT-23 package.