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L4943 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
L4943ST500Yes

part L4943 is a low-drop voltage regulator manufactured by STMicroelectronics (ST).

The part L4943 is a low-drop voltage regulator manufactured by STMicroelectronics (ST). Below are the factual specifications, descriptions, and features from the Manufactor Datasheet:

Specifications:

  • Input Voltage Range: Up to 28V
  • Output Voltage Options: 5V (fixed)
  • Output Current: Up to 250mA
  • Dropout Voltage: Typically 0.4V at 250mA
  • Line Regulation: 0.04% (typical)
  • Load Regulation: 0.2% (typical)
  • Quiescent Current: 1.6mA (typical)
  • Operating Temperature Range: -40°C to +125°C
  • Package Options: TO-220, DPAK, SO-8

Descriptions:

  • The L4943 is a monolithic integrated low-drop voltage regulator designed for automotive and industrial applications.
  • It includes features like short-circuit protection, thermal shutdown, and reverse polarity protection.
  • The device is optimized for stability with low-ESR capacitors.

Features:

  • Low Dropout Voltage: Ensures efficient regulation even with small input-output differentials.
  • Overcurrent Protection: Safeguards against excessive current draw.
  • Thermal Shutdown: Prevents damage due to overheating.
  • Reverse Polarity Protection: Enhances reliability in automotive environments.
  • Low Quiescent Current: Improves efficiency in battery-operated systems.

These details are based on STMicroelectronics' official documentation for the L4943 voltage regulator.

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