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LM3940 - 1-A Low-Dropout Regulator

Description

The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply.

The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V logic, with prime power provided from a 5-V bus.

Features

  • 1 Input Voltage Range: 4.5 V to 5.5 V.
  • Output Voltage Specified over Temperature.
  • Excellent Load Regulation.
  • Specified 1-A Output Current.
  • Requires only One External Component.
  • Built-in Protection against Excess Temperature.
  • Short-Circuit Protected 2.

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Full PDF Text Transcription

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Product Folder Order Now Technical Documents Tools & Software Support & Community LM3940 SNVS114G – MAY 1999 – REVISED FEBRUARY 2015 LM3940 1-A Low-Dropout Regulator for 5-V to 3.3-V Conversion 1 Features •1 Input Voltage Range: 4.5 V to 5.5 V • Output Voltage Specified over Temperature • Excellent Load Regulation • Specified 1-A Output Current • Requires only One External Component • Built-in Protection against Excess Temperature • Short-Circuit Protected 2 Applications • Laptop and Desktop Computers • Logic Systems 3 Description The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V logic, with prime power provided from a 5-V bus.
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