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L4973V5.1 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
L4973V5.1ST240Yes

L4973V5.

The L4973V5.1 is a 5.1V voltage regulator manufactured by STMicroelectronics (ST).

Key Specifications:

  • Output Voltage: 5.1V (fixed)
  • Output Current: Up to 3.5A
  • Input Voltage Range: 8V to 55V
  • Dropout Voltage: Typically 1.5V at full load
  • Line Regulation: ±0.1% (typical)
  • Load Regulation: ±0.3% (typical)
  • Switching Frequency: Adjustable (up to 300kHz)
  • Efficiency: Up to 90%
  • Protection Features:
  • Overcurrent protection
  • Thermal shutdown
  • Soft-start
  • Undervoltage lockout (UVLO)

Descriptions and Features:

  • High-efficiency switching regulator for step-down (buck) applications.
  • Monolithic design with integrated power MOSFET.
  • Adjustable switching frequency for optimized performance.
  • Low standby current in shutdown mode.
  • Wide input voltage range suitable for automotive and industrial applications.
  • TO-220 package for efficient thermal dissipation.
  • Internal current limiting and thermal protection for enhanced reliability.

This regulator is commonly used in power supplies, automotive systems, and industrial controls requiring stable 5.1V output.

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