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LM3411 - Precision Secondary Regulator/Driver

This page provides the datasheet information for the LM3411, a member of the LM3 Precision Secondary Regulator/Driver family.

Datasheet Summary

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.

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).

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Datasheet preview – LM3411

Datasheet Details

Part number LM3411
Manufacturer National Semiconductor
File Size 350.77 KB
Description Precision Secondary Regulator/Driver
Datasheet download datasheet LM3411 Datasheet
Additional preview pages of the LM3411 datasheet.

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Full PDF Text Transcription

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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.
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