L7812

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L7812

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IC REG LINEAR 12V 1.5A TO220

  • メーカーLumimax光電技術

  • メーカー品番 #L7812

  • データシート L7812 DataSheet

  • 在庫状況23405

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仕様

属性 値
Series L78
Part Status Active
Output Configuration Positive
Output Type Fixed
Number of Regulators 1
Voltage - Input (Max) 35V
Voltage - Output (Min / Fixed) 12V
Voltage Dropout (Max) 2V @ 1A
Current - Output 1.5A
Current - Quiescent (Iq) 8 mA
PSRR 55dB (120Hz)
Protection Features Over Current, Over Temperature, Short Circuit
Operating Temperature -25°C ~ 125°C (TJ)
Mounting Type Through Hole
Package / Case TO-220-3
Supplier Device Package TO-220

概要

Description

The L7812 is a type of voltage regulator integrated circuit that provides a stable output voltage of 12 volts. It belongs to the 7800 series of voltage regulators, which are widely used in electronic circuits to maintain a constant voltage level. The L7812 is a three-terminal device, consisting of an input, output, and ground terminal. It can handle input voltages ranging from around 14.5 to 35 volts and typically delivers up to 1.5 amperes of current.
Key features of the L7812 include thermal overload protection, short-circuit protection, and safe area protection, which enhance the reliability and durability of the circuit. The device is available in various packages, such as TO-220, making it suitable for both consumer electronics and industrial applications. Common uses include power supply circuits, voltage reference systems, and any application requiring a stable 12V output. The L7812 simplifies design by reducing the need for additional components like resistors and capacitors to achieve voltage stability.

Equivalent

The L7812 is a voltage regulator that provides a fixed 12V output. Equivalent products include the LM7812, UA7812, MC7812, and NTE960. These are all part of the 78xx series, which are popular three-terminal positive voltage regulators with similar specifications and pin configurations. Make sure to check the specific datasheets for minor variations in electrical characteristics or package types before substituting.

Features

The L7812 is a popular voltage regulator in the LM78xx series, which provides a fixed 12V output. Here are its key features:
1. Output Voltage: It provides a stable 12V DC output.
2. Input Voltage Range: Typically accepts an input voltage up to 35V.
3. Current Output: Can supply up to 1.5A of output current.
4. Regulation: Good line and load regulation, ensuring consistent output voltage despite changes in input voltage or load conditions.
5. Protection: Built-in features include thermal overload protection, short-circuit protection, and safe area protection.
6. Package: Commonly available in TO-220 package, which has good heat dissipation properties.
7. Temperature Range: Generally operates over a wide temperature range, although specific ranges can depend on the manufacturer.
8. Applications: Widely used in power supply circuits for electronic devices, providing a stable voltage source.
This regulator is valued for its reliability and ease of use in various electronic projects requiring a stable 12V power supply.

Pinout

The L7812 is a three-terminal positive voltage regulator from the 78xx series, designed to provide a stable 12V DC output. The device typically comes in a TO-220 package. Here's a concise overview of its pin configuration and function:
1. Pin Count: The L7812 has 3 pins.

2. Pin Functions:
- Pin 1 (Input): This pin is where the unregulated input voltage is applied. It requires a voltage higher than 12V to function properly, typically in the range of 14.5V to 35V.
- Pin 2 (Ground): This pin is connected to the ground or zero voltage reference of the circuit. It is essential for the regulator to work correctly.
- Pin 3 (Output): This pin delivers the regulated 12V output. The output voltage is maintained at a constant level despite variations in input voltage or output load current.
The L7812 is commonly used in power supply circuits that require a reliable 12V output with up to 1.5A output current capability, featuring built-in protection against overheat and overcurrent.

Manufacturer

The L7812 is a voltage regulator, and it is manufactured by several companies, including STMicroelectronics, Texas Instruments, ON Semiconductor, and NXP Semiconductors, among others. These companies are known for producing a wide range of semiconductor and electronic components used in various applications across the electronics industry.
1. STMicroelectronics: A global semiconductor company that designs, develops, manufactures, and markets a broad range of products, including discrete and analog devices, microcontrollers, and digital integrated circuits.
2. Texas Instruments (TI): An American technology company that designs and manufactures semiconductors and integrated circuits, which are used in electronic devices across various industries.
3. ON Semiconductor: A leading supplier of semiconductor-based solutions, offering a comprehensive portfolio of energy-efficient power and signal management, logic, discrete, and custom devices.
4. NXP Semiconductors: A Dutch company that provides high-performance mixed-signal and standard product solutions, focusing on automotive, identification, and mobile industries.
These companies are involved in innovation and production of essential electronic components that support a wide array of applications in consumer electronics, industrial systems, automotive, telecommunications, and more.

Application

The L7812 is a voltage regulator that provides a stable 12V output and is commonly used in various electronic applications. Key areas include:
1. Power Supply Design: Used to maintain a constant 12V output in electronic devices.
2. Embedded Systems: Supplies power for microcontrollers and digital circuits.
3. Consumer Electronics: Provides stable voltage for devices like televisions and audio equipment.
4. Automotive Applications: Powers 12V systems in vehicles.
5. Industrial Automation: Ensures steady voltage for sensors and control systems.
6. Communication Equipment: Maintains consistent power levels for radio and telecommunications gear.
Its ease of use and reliability make the L7812 a popular choice for ensuring voltage stability.

Package

The L7812 is a three-terminal positive voltage regulator that typically comes in TO-220 package. It is designed to provide a fixed output voltage of 12V with a current output of up to 1.5A. The TO-220 package features a metal tab for heat dissipation, making it suitable for various power supply applications.

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