STMicroelectronics
Obraz może przedstawiać obraz.
Szczegóły produktu można znaleźć w specyfikacjach.
L4970A
Pokaż szczegóły Arkusze danych

L4970A

Product Overview

Category

The L4970A belongs to the category of voltage regulators.

Use

It is used as a step-down monolithic power switching regulator.

Characteristics

  • High efficiency
  • Low standby current
  • Wide input voltage range
  • Adjustable output voltage
  • Overtemperature protection

Package

The L4970A comes in a TO-220 package.

Essence

This voltage regulator is essential for providing stable and regulated power supply in various electronic applications.

Packaging/Quantity

The L4970A is typically sold in reels with a quantity of 250 units per reel.

Specifications

  • Input Voltage Range: 8V to 55V
  • Output Voltage Range: 2.85V to 50V
  • Output Current: Up to 10A
  • Standby Current: 50µA
  • Operating Temperature Range: -40°C to 150°C

Detailed Pin Configuration

The L4970A has a standard TO-220 pin configuration with the following pins: 1. Vin (Input Voltage) 2. GND (Ground) 3. Vout (Output Voltage)

Functional Features

  • Internal current limiting
  • Thermal shutdown
  • Soft start
  • Frequency jittering for low EMI

Advantages

  • High efficiency conversion
  • Wide input voltage range
  • Overtemperature protection ensures device safety

Disadvantages

  • Higher cost compared to linear regulators
  • Requires external components for operation

Working Principles

The L4970A operates by using a pulse-width modulation (PWM) control circuit to regulate the output voltage. It switches at a high frequency to minimize the size of the external components required for the application.

Detailed Application Field Plans

The L4970A is commonly used in: - Industrial power supplies - Automotive electronics - Telecommunication equipment - Battery charging systems

Detailed and Complete Alternative Models

Some alternative models to the L4970A include: - LM2576 - LM2675 - LT1083

In conclusion, the L4970A is a versatile voltage regulator with a wide range of applications, offering high efficiency and reliable performance in various electronic systems.

Word count: 310

Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem L4970A w rozwiązaniach technicznych

  1. What is the L4970A voltage regulator used for?

    • The L4970A is a voltage regulator designed for use in various technical solutions to provide stable and regulated power supply.

  2. What is the input voltage range of the L4970A?

    • The input voltage range of the L4970A is typically between 8V and 55V, making it suitable for a wide range of applications.

  3. What is the maximum output current of the L4970A?

    • The L4970A can deliver a maximum output current of up to 10A, making it suitable for powering a variety of loads.

  4. How does the L4970A handle thermal management?

    • The L4970A features built-in thermal shutdown and current limit protection to ensure safe operation and prevent overheating.

  5. Can the L4970A be used in automotive applications?

    • Yes, the L4970A is designed to withstand the harsh conditions of automotive environments, making it suitable for automotive applications.

  6. What are the key features of the L4970A for industrial applications?

    • The L4970A offers high efficiency, wide input voltage range, and robust protection features, making it well-suited for industrial applications.

  7. Does the L4970A require external components for operation?

    • The L4970A requires only a few external components for operation, simplifying its integration into technical solutions.

  8. Is the L4970A suitable for battery charging applications?

    • Yes, the L4970A can be used in battery charging applications, providing a stable and regulated output voltage.

  9. What are the typical applications of the L4970A in consumer electronics?

    • The L4970A can be used in consumer electronics such as TVs, set-top boxes, and audio amplifiers to provide reliable power supply.

  10. What are the advantages of using the L4970A in power supply designs?

    • The L4970A offers high efficiency, compact size, and comprehensive protection features, making it an ideal choice for power supply designs.