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LM3411 - Precision Secondary Regulator/Driver

Download the LM3411 datasheet PDF. This datasheet also covers the LM3 variant, as both devices belong to the same precision secondary regulator/driver family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM3411 is a low power fixed-voltage (3.3V or 5.0V) precision shunt regulator designed specifically for driving an optoisolator to provide feedback isolation in a switching regulator.

Key Features

  • n Fixed voltages of 3.3V and 5.0V with initial tolerance of ± 1% for standard grade and ± 0.5% for A grade n Custom voltages available (3V.
  • 17V) n Wide output current range, 20 µA.
  • 15 mA n Low temperature coefficient n Available in 5-lead SOT23-5 surface mount package (tape and reel).

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3-411.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM3411 Precision Secondary Regulator/Driver Texas Instruments

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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
LM3411 Precision Secondary Regulator/Driver December 1999 LM3411 Precision Secondary Regulator/Driver General Description The LM3411 is a low power fixed-voltage (3.3V or 5.0V) precision shunt regulator designed specifically for driving an optoisolator to provide feedback isolation in a switching regulator. The LM3411 circuitry includes an internally compensated op amp, a bandgap reference, NPN output transistor, and voltage setting resistors. A trimmed precision bandgap reference with temperature drift curvature correction, provides a guaranteed 1% precision over the operating temperature range (A grade version). The amplifier’s inverting input is externally accessible for loop frequency compensation when used as part of a larger servo system.