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L7812ABV
IC REG LINEAR 12V 1.5A TO220
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規格
| Part Status | Active |
| Base Product Number | L7812 |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 35V |
| Voltage - Output (Min/Fixed) | 12V |
| Voltage Dropout (Max) | 2V @ 1A (Typ) |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | 6 mA |
| PSRR | 60dB (120Hz) |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Through Hole |
| Package | TO-220-3 |
| Supplier Device Package | TO-220 |
| Packaging | Tube |
概述
Description
The L7812ABV is a voltage regulator integrated circuit (IC) from the 78xx series, designed to provide a fixed 12V output with a maximum output current of 1.5A. It features a three-terminal configuration, making it easy to use in various electronic projects and power supply circuits. The L7812ABV offers protection features such as thermal shutdown and current limiting to prevent damage from overheating or excessive current draw. It requires a minimum input voltage of around 14V to maintain a stable 12V output, and it is commonly used in applications where a stable and precise voltage is necessary, such as in audio equipment, home appliances, and industrial electronics. The device is typically housed in a TO-220 package, allowing for easy mounting and heat dissipation with the use of a heatsink if necessary.
Features
The L7812ABV is a voltage regulator component designed for electronic circuits requiring a consistent and stable 12V output. Key features include:
1. Output Voltage: Provides a fixed output of 12V.
2. Output Current: Can supply up to 1.5A of current, making it suitable for medium-power applications.
3. Input Voltage Range: Typically accepts input voltages between 14.5V to 35V.
4. Thermal Protection: Includes built-in thermal shutdown to prevent overheating.
5. Short-Circuit Protection: Offers safety features to protect against short circuits.
6. Overload Protection: Automatically reduces output during overload conditions to prevent damage.
7. Low Quiescent Current: Efficient design to minimize power consumption when idle.
8. Dropout Voltage: Typically around 2V, indicating the minimum difference between input and output voltages for regulation.
9. Package: Available in TO-220 package, suitable for heat sinking.
The L7812ABV's reliability and protection features make it ideal for various applications, including power supplies, microcontroller projects, and electronic devices needing a steady 12V output.
1. Output Voltage: Provides a fixed output of 12V.
2. Output Current: Can supply up to 1.5A of current, making it suitable for medium-power applications.
3. Input Voltage Range: Typically accepts input voltages between 14.5V to 35V.
4. Thermal Protection: Includes built-in thermal shutdown to prevent overheating.
5. Short-Circuit Protection: Offers safety features to protect against short circuits.
6. Overload Protection: Automatically reduces output during overload conditions to prevent damage.
7. Low Quiescent Current: Efficient design to minimize power consumption when idle.
8. Dropout Voltage: Typically around 2V, indicating the minimum difference between input and output voltages for regulation.
9. Package: Available in TO-220 package, suitable for heat sinking.
The L7812ABV's reliability and protection features make it ideal for various applications, including power supplies, microcontroller projects, and electronic devices needing a steady 12V output.
Package
The L7812ABV is a linear voltage regulator that typically comes in a TO-220 package. This package type is commonly used for power semiconductor devices and provides efficient thermal and electrical performance for applications requiring a 12V output voltage.
Pinout
The L7812ABV is a voltage regulator IC with three pins. It is part of the 78xx series of fixed linear voltage regulators. Here is the pin configuration and function:
1. Pin 1 (Input): This is the input pin where an unregulated voltage is supplied. The input voltage should be higher than the 12V output voltage, typically between 14.5V and 35V, to ensure proper regulation.
2. Pin 2 (Ground): This pin is connected to the ground or zero voltage reference of the circuit. It serves as the common ground for both the input and output voltages.
3. Pin 3 (Output): This is the output pin where the regulated 12V voltage is provided. The L7812ABV maintains a constant 12V output as long as the input voltage is within the specified range and the current is within the device's limits.
The L7812ABV is commonly used in power supply circuits to provide a stable 12V output from a higher voltage input, supporting up to 1.5A of output current with adequate heat sinking.
1. Pin 1 (Input): This is the input pin where an unregulated voltage is supplied. The input voltage should be higher than the 12V output voltage, typically between 14.5V and 35V, to ensure proper regulation.
2. Pin 2 (Ground): This pin is connected to the ground or zero voltage reference of the circuit. It serves as the common ground for both the input and output voltages.
3. Pin 3 (Output): This is the output pin where the regulated 12V voltage is provided. The L7812ABV maintains a constant 12V output as long as the input voltage is within the specified range and the current is within the device's limits.
The L7812ABV is commonly used in power supply circuits to provide a stable 12V output from a higher voltage input, supporting up to 1.5A of output current with adequate heat sinking.
Manufacturer
The L7812ABV is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a broad range of semiconductor products and solutions. They serve various markets including automotive, industrial, personal electronics, communications equipment, and computers. STMicroelectronics is known for its innovation in integrated circuits and semiconductor technology, providing key components for various electronic applications.
Application
The L7812ABV is a voltage regulator commonly used in various applications that require a stable 12V output. Key application areas include power supply circuits for electronic devices, microcontroller and microprocessor systems, and audio equipment. It is also used in automotive electronics for powering 12V accessories and in communication devices to ensure consistent voltage levels. Its ability to provide a stable output makes it suitable for any application needing reliable voltage regulation.
Equivalent
The L7812ABV is a 12V, 1.5A positive voltage regulator. Equivalent products include the LM7812 by Texas Instruments, MC7812 by ON Semiconductor, UA7812 by Fairchild Semiconductor, and NTE956 by NTE Electronics. These regulators provide similar output voltage and current ratings and are used in power supply applications. Always check datasheets for compatibility in specific applications.
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