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L4975 (L4975A) IC – 5A Switching Regulator IC

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25 In stock


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950.00 (excluding 18% GST)

25 In stock

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Description

The L4975 is a step-down (buck) switching regulator IC capable of delivering up to 5A of output current. It integrates key functions necessary for a complete DC-DC converter, including an internal reference, error amplifier, oscillator, and protection circuits. The L4975A version offers enhanced features for improved performance and reliability.

Features

  • 5A Output Current: Provides up to 5A of continuous output current, making it suitable for high-power applications.
  • Wide Input Voltage Range: Operates with an input voltage range from 8.4V to 50V, allowing it to accommodate various power supply designs.
  • Adjustable Output Voltage: The output voltage can be adjusted from 5.1V to 40V using external resistors, offering flexibility for different needs.
  • High Efficiency: Designed for high-efficiency operation, typically achieving efficiencies of over 85%, which minimizes heat dissipation and improves overall energy usage.
  • Fixed Frequency Operation: Features a fixed switching frequency of 100 kHz, simplifying design and providing stable operation.
  • Current Limiting: Integrated current limiting function protects the IC and load from excessive current conditions.
  • Thermal Shutdown: Includes thermal protection to prevent overheating, ensuring reliable operation.
  • Soft Start: Gradual startup of the output voltage to avoid excessive inrush current, enhancing system stability.
  • Overvoltage Protection: Provides protection against output overvoltage conditions to safeguard both the IC and connected components.
  • Low Output Ripple: Designed to minimize output voltage ripple, providing stable and clean power to sensitive electronics.
  • Compact Package: Available in a TO-220 package, which facilitates efficient heat dissipation and easy integration into power supply designs.

Specifications

  • Input Voltage Range: 8.4V to 50V
  • Output Voltage Range: Adjustable from 5.1V to 40V
  • Output Current: Up to 5A
  • Switching Frequency: 100 kHz
  • Efficiency: Typically >85%
  • Quiescent Current: Typically 8 mA
  • Thermal Shutdown: Yes
  • Current Limiting: Yes
  • Operating Temperature Range: -40°C to +150°C (junction temperature)
  • Package: TO-220

Applications

  • Power Supplies for Microprocessors: Provides stable and reliable power for high-current digital circuits and processors.
  • Industrial Power Systems: Ideal for powering industrial control systems and high-power electronic equipment.
  • Telecommunications Equipment: Used in power supplies for telecom infrastructure, ensuring efficient and stable power conversion.
  • Automotive Electronics: Suitable for automotive power systems, regulating power for various subsystems.
  • Battery Chargers: Effective in designing battery chargers with medium to high current output.
  • General-Purpose DC-DC Converters: Suitable for creating adjustable power supplies for various electronic applications.

Note

* Product Images are shown for illustrative purposes only and may differ from actual product

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