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LF40C - Very low drop voltage regulators

Download the LF40C datasheet PDF. This datasheet also covers the LF40AB variant, as both devices belong to the same very low drop voltage regulators family and are provided as variant models within a single manufacturer datasheet.

General Description

The LF00 series are very Low Drop regulators available in PENTAWATT, TO-220, TO-220FP, DPAK and PPAK package and in a wide range of output voltages.

Key Features

  • Very low dropout voltage (0.45V).
  • Very low quiescent current (TYP. 50 µA in OFF mode, 500 µA in ON mode).
  • Output current up to 500 mA.
  • Logic-controlled electronic shutdown.
  • Output voltages of 1.5; 1.8; 2.5; 2.7; 3; 3.3; 3.5; 4; 5; 6; 8; 8.5; 9; 12V.
  • Internal current and thermal limit.
  • Only 2.2 µF for stability.
  • Available in ± 1% (AB) or ± 2% (C) selection at 25°C.
  • Supply voltage rejection: 80db (typ. ).
  • Temperature range: -40 to 125°C.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LF40AB-STMicroelectronics.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by STMicroelectronics

Part Number Description
LF40AB Very low drop voltage regulators
LF45AB VERY LOW DROP VOLTAGE REGULATORS
LF45C VERY LOW DROP VOLTAGE REGULATORS
LF47AB VERY LOW DROP VOLTAGE REGULATORS
LF47C VERY LOW DROP VOLTAGE REGULATORS

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
LF00 series Very low drop voltage regulators with inhibit Features ■ Very low dropout voltage (0.45V) ■ Very low quiescent current (TYP. 50 µA in OFF mode, 500 µA in ON mode) ■ Output current up to 500 mA ■ Logic-controlled electronic shutdown ■ Output voltages of 1.5; 1.8; 2.5; 2.7; 3; 3.3; 3.5; 4; 5; 6; 8; 8.5; 9; 12V ■ Internal current and thermal limit ■ Only 2.2 µF for stability ■ Available in ± 1% (AB) or ± 2% (C) selection at 25°C ■ Supply voltage rejection: 80db (typ.) ■ Temperature range: -40 to 125°C Description The LF00 series are very Low Drop regulators available in PENTAWATT, TO-220, TO-220FP, DPAK and PPAK package and in a wide range of output voltages. The very Low Drop voltage (0.