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LM25145 - 6-V to 42-V Synchronous Buck DC-DC Controller

General Description

The LM25145 42-V synchronous buck controller is designed to regulate from a high input voltage source or from an input rail subject to high voltage transients, minimizing the need for external surge suppression components.

Key Features

  • 1 Versatile Synchronous Buck DC-DC Controller.
  • Wide Input Voltage Range of 6 V to 42 V.
  • Adjustable Output Voltage From 0.8 V to 40 V.
  • Meets EN55022 / CISPR 22 EMI Standards.
  • Lossless RDS(on) or Shunt Current Sensing.
  • Switching Frequency From 100 kHz to 1 MHz.
  • SYNC In and SYNC Out Capability.
  • 40-ns Minimum On-Time for High VIN / VOUT Ratio.
  • 140-ns Minimum Off-Time for Low Dropout.
  • 0.8-V Reference With ±1% Fe.

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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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Product Folder Order Now Technical Documents Tools & Software Support & Community LM25145 SNVSAT9 – JUNE 2017 LM25145 6-V to 42-V Synchronous Buck DC-DC Controller With Wide Duty Cycle Range 1 Features •1 Versatile Synchronous Buck DC-DC Controller – Wide Input Voltage Range of 6 V to 42 V – Adjustable Output Voltage From 0.8 V to 40 V • Meets EN55022 / CISPR 22 EMI Standards • Lossless RDS(on) or Shunt Current Sensing • Switching Frequency From 100 kHz to 1 MHz – SYNC In and SYNC Out Capability • 40-ns Minimum On-Time for High VIN / VOUT Ratio • 140-ns Minimum Off-Time for Low Dropout • 0.8-V Reference With ±1% Feedback Accuracy • 7.5-V Gate Drivers for Standard VTH MOSFETs – 14-ns Adaptive Dead-Time Control – 2.3-A Source and 3.