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LM3401 - Hysteretic PFET Controller

Description

The LM3401 is a switching controller designed to provide constant current to high power LEDs.

The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators.

The LM3401 delivers constant current within ±6% accuracy to a wide variety and number of series connected LEDs.

Features

  • 1.
  • 2 Hysteretic Control for Speed and Simplicity.
  • Input Operating Range of 4.5V-35V.
  • 1.5MHz Maximum Switching Frequency.
  • Low 200mV Reference Voltage.
  • Programmable Current Limit.
  • High speed CMOS Compatible Enable/Dimming.
  • Adjustable Hysteresis.
  • Input UVLO.
  • No output Capacitor Required.
  • 8-pin VSSOP 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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LM3401 www.ti.com SNVS516C – AUGUST 2007 – REVISED MAY 2013 LM3401 Hysteretic PFET Controller for High Power LED Drive Check for Samples: LM3401 FEATURES 1 •2 Hysteretic Control for Speed and Simplicity • Input Operating Range of 4.5V-35V • 1.5MHz Maximum Switching Frequency • Low 200mV Reference Voltage • Programmable Current Limit • High speed CMOS Compatible Enable/Dimming • Adjustable Hysteresis • Input UVLO • No output Capacitor Required • 8-pin VSSOP Package APPLICATIONS • LED Driver • Battery Charger DESCRIPTION The LM3401 is a switching controller designed to provide constant current to high power LEDs. The LM3401 drives an external P-MOSFET switch for step-down (Buck) regulators.
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