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L5973D Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
L5973DST1244Yes

L5973D** is a step-down switching regulator manufactured by **STMicroelectronics**.

The L5973D is a step-down switching regulator manufactured by STMicroelectronics.

Key Specifications:

  • Input Voltage Range: 4.4V to 36V
  • Output Voltage Range: Adjustable from 1.235V to 35V
  • Output Current: Up to 2.5A
  • Switching Frequency: 250kHz (fixed)
  • Efficiency: Up to 92%
  • Operating Temperature Range: -40°C to +150°C
  • Package: SO-8 (PowerSO-8 also available)
  • Protection Features: Thermal shutdown, current limiting, and undervoltage lockout (UVLO)

Descriptions:

The L5973D is a monolithic step-down switching regulator with an integrated power switch. It is designed for high-efficiency DC-DC conversion in applications requiring a wide input voltage range. The device operates in current-mode control for improved transient response and stability.

Features:

  • Wide Input Voltage Range (4.4V to 36V)
  • 2.5A Output Current Capability
  • Internal 2A Power Switch
  • Adjustable Output Voltage (via external resistors)
  • Low Dropout Operation (100% duty cycle possible)
  • Fixed 250kHz Switching Frequency
  • Synchronization Capability
  • Soft-Start Function
  • Thermal Shutdown & Overcurrent Protection
  • Undervoltage Lockout (UVLO)

This regulator is commonly used in industrial, automotive, and consumer electronics applications where efficient power conversion is required.

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