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L4970A

Part No L4970A
Manufacturer STMicroelectronics
Catalog PMIC - Voltage Regulators - DC DC Switching Regulators
Description 10A SWITCHING REGULATOR
Datasheet
Sample
Rohs State rohs
ECAD Module
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Products specifications Report Issue?

Categories Integrated Circuits (ICs)
Manufacturer STMicroelectronics
Packaging Tube
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Input Voltage MIN 15V
Voltage Input MAX 50V
Output Voltage 5.1V
Output Voltage MAX 40V
Output Current 10A
Frequency - Switching 200kHz
Synchronous Rectifier No
Operating Temperature Range -40°C ~ 150°C (TJ)
Mounting Style Through Hole
Package Multiwatt-15 (Vertical, Bent and Staggered Leads)
Manufacturer Package 15-Multiwatt
Win Source Part Number 1194278-L4970A
Manufacturer Homepage www.st.com
Family Name L4970A
Introduction Date August 14, 1995
ECCN EAR99
Country of Origin Morocco
Halogen Free Not Compliant
Estimated EOL Date 2025
Is this a common-used part? Yes
Popularity High
Supply and Demand Status Balance
Application Field Used in Power Management
Ultra Librarian 3D Model Ultra Librarian L4970A CAD Model

Description

The L4970A from STMicroelectronics is a versatile and robust 10A switching regulator that is designed to deliver high performance in a wide range of applications. This regulator is capable of providing an adjustable output voltage that ranges from 5.1V to 40V, which makes it ideal for systems that require a reliable and consistent power supply.

Key Features

  • High Output Current: Capable of delivering up to 10A of continuous current, making it suitable for high-power applications.
  • Adjustable Output Voltage: Offers a flexible output voltage range of 5.1V to 40V, which can be set via external resistors.
  • High Efficiency: Integrated synchronous rectification enhances efficiency, especially at low output voltages.
  • Thermal Protection: Features thermal shutdown and current limiting to protect the device and the load from damage due to overheating or overcurrent conditions.
  • Wide Input Voltage Range: Can operate with an input voltage from 8V to 55V, accommodating a variety of power sources.
  • Frequency Adjustability: Allows the user to set the switching frequency from 100kHz to 500kHz with an external resistor or synchronize it to an external clock.

Applications

The L4970A is a versatile component that can be used in a diverse array of applications, including:

  • Switching power supplies
  • DC/DC converters
  • Battery chargers
  • Power supplies for computer systems
  • Industrial power systems
  • Telecommunications equipment

Quality and Reliability

STMicroelectronics is known for their commitment to quality, and the L4970A is no exception. It is designed to meet the rigorous standards expected in industrial and commercial products, ensuring high reliability and performance in the most demanding environments.

Conclusion

With its impressive feature set, including high output current capacity, adjustable output voltage, and extensive protection features, the L4970A is a strong choice for designers looking to create efficient and reliable power supply solutions. Its capability to handle a wide range of input voltages and to be adjusted in terms of frequency makes it a highly adaptable solution that can meet the needs of a vast array of electronic applications.

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