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LM25141 - Wide Input Range Synchronous Buck Controller

General Description

The LM25141 is a synchronous buck controller, intended for high voltage wide VIN step-down converter applications.

The control method is peak current mode control.

Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease of loop compensation.

Key Features

  • 1.
  • 40°C to +125°C Ambient Operating Temperature Range.
  • An AEC-Q100 Qualified Device is Available.
  • VIN 3.8 V to 45 V (47 V Absolute Maximum).
  • Output: Fixed 3.3 V, 5 V, or Adjustable From 1.5 V - 15 V with ±0.8% Accuracy.
  • Fixed 2.2 MHz or 440 kHz Switching Frequency with ±5% Accuracy.
  • High-Side and Low-Side Gate Drive With Slew Rate Control.
  • Optional Frequency Shift by Varying an Analog Voltage or RT Resistor.
  • Optional.

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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 LM25141 SNVSAU1 – MARCH 2017 LM25141 Wide Input Range Synchronous Buck Controller 1 Features •1 –40°C to +125°C Ambient Operating Temperature Range • An AEC-Q100 Qualified Device is Available • VIN 3.8 V to 45 V (47 V Absolute Maximum) • Output: Fixed 3.3 V, 5 V, or Adjustable From 1.5 V - 15 V with ±0.8% Accuracy • Fixed 2.2 MHz or 440 kHz Switching Frequency with ±5% Accuracy • High-Side and Low-Side Gate Drive With Slew Rate Control • Optional Frequency Shift by Varying an Analog Voltage or RT Resistor • Optional Synchronization to an External Clock • Optional Spread Spectrum • Shutdown Mode IQ: 10 µA Typical • Low Standby Mode IQ: 35 µA Typical • 75 mV Current Limit Threshold with ±0.