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LM5642X - Dual Synchronous Buck Converter

Download the LM5642X datasheet PDF. This datasheet also covers the LM5642 variant, as both devices belong to the same dual synchronous buck converter family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM5642 series consists of two current mode synchronous buck regulator controllers operating 180° out of phase with each other at a normal switching frequency of 200kHz for the LM5642 and at 375kHz for the LM5642X.

Key Features

  • 1.
  • 2 Two Synchronous Buck Regulators.
  • 180° Out of Phase Operation.
  • 200 kHz Fixed Nominal Frequency: LM5642.
  • 375 kHz Fixed Nominal Frequency: LM5642X.
  • Synchronizable Switching Frequency from 150 kHz to 250 kHz for the LM5642 and 200 kHz to 500 kHz for the LM5642X.
  • 4.5V to 36V Input Range.
  • 50 µA Shutdown Current.
  • Adjustable Output from 1.3V to 90% of Vin.
  • 0.04% (Typical) Line and Load Regulation Accuracy.
  • Curr.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM5642-etcTI.pdf) that lists specifications for multiple related part numbers.

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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.

View original datasheet text
LM5642, LM5642X www.ti.com SNVS219K – JUNE 2003 – REVISED APRIL 2013 LM5642/LM5642X High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization Check for Samples: LM5642, LM5642X FEATURES 1 •2 Two Synchronous Buck Regulators • 180° Out of Phase Operation • 200 kHz Fixed Nominal Frequency: LM5642 • 375 kHz Fixed Nominal Frequency: LM5642X • Synchronizable Switching Frequency from 150 kHz to 250 kHz for the LM5642 and 200 kHz to 500 kHz for the LM5642X • 4.5V to 36V Input Range • 50 µA Shutdown Current • Adjustable Output from 1.3V to 90% of Vin • 0.04% (Typical) Line and Load Regulation Accuracy • Current Mode Control with or without a Sense Resistor • Independent Enable/Soft-start Pins Allow Simple Sequential Startup Configuration.