仕様
| 属性 | 値 |
| Package | Tube,Tube |
| ProductStatus | Obsolete |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 35V |
| Voltage-Output(Min/Fixed) | 12V |
| VoltageDropout(Max) | 2V @ 1A (Typ) |
| Current-Output | 1A |
| Current-Quiescent(Iq) | 8 mA |
| PSRR | 71dB (120Hz) |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | TO-220-3 |
概要
Description
The KA7812ETU is a voltage regulator integrated circuit designed to provide a fixed output voltage of 12 volts. It is part of the 78xx series of voltage regulators, which are widely used for providing stable voltage supply in electronic circuits. The device can deliver up to 1.5A of output current, making it suitable for a variety of applications, including power supplies for microcontrollers, sensors, and other digital or analog components.
Key features of the KA7812ETU include internal thermal overload protection, short-circuit protection, and safe area compensation, which enhance its reliability and safety in operation. It typically requires only two external capacitors to function effectively, simplifying circuit design. The KA7812ETU is available in a TO-220 package, which is well-suited for heat dissipation, and it can be mounted on a heatsink to manage thermal performance under load.
Overall, the KA7812ETU is a robust and cost-effective solution for applications requiring a stable 12V DC supply.
Key features of the KA7812ETU include internal thermal overload protection, short-circuit protection, and safe area compensation, which enhance its reliability and safety in operation. It typically requires only two external capacitors to function effectively, simplifying circuit design. The KA7812ETU is available in a TO-220 package, which is well-suited for heat dissipation, and it can be mounted on a heatsink to manage thermal performance under load.
Overall, the KA7812ETU is a robust and cost-effective solution for applications requiring a stable 12V DC supply.
Equivalent
The KA7812ETU is a voltage regulator that provides a fixed 12V output. Equivalent products include the LM7812, L7812, MC7812, and UA7812, among others. These are all part of the 7812 series of linear voltage regulators and can typically be interchanged, provided they meet the same specifications for input voltage, output current, and package type. Always check the datasheets for specific electrical characteristics and pin configurations to ensure compatibility.
Features
The KA7812ETU is a fixed-output voltage regulator designed to provide a stable 12V DC output from a varying input voltage. Key features include:
1. Fixed Output Voltage: Provides a consistent 12V output, suitable for a variety of applications requiring stable voltage.
2. Output Current: Can deliver up to 1.5A of output current, making it useful for powering moderate load circuits.
3. Thermal Protection: Includes built-in thermal protection to prevent damage from overheating, enhancing reliability.
4. Short-Circuit Protection: Offers protection against short circuits, safeguarding the regulator and connected devices.
5. Ripple Rejection: Exhibits good ripple rejection, which helps in minimizing the effects of input voltage fluctuations.
6. Easy to Use: Requires minimal external components, simplifying circuit design and reducing overall cost.
7. Package Type: Typically available in TO-220 package, which offers good thermal conductivity and ease of mounting.
These features make the KA7812ETU a versatile choice for applications in power management, consumer electronics, and industrial systems requiring a stable 12V power supply.
1. Fixed Output Voltage: Provides a consistent 12V output, suitable for a variety of applications requiring stable voltage.
2. Output Current: Can deliver up to 1.5A of output current, making it useful for powering moderate load circuits.
3. Thermal Protection: Includes built-in thermal protection to prevent damage from overheating, enhancing reliability.
4. Short-Circuit Protection: Offers protection against short circuits, safeguarding the regulator and connected devices.
5. Ripple Rejection: Exhibits good ripple rejection, which helps in minimizing the effects of input voltage fluctuations.
6. Easy to Use: Requires minimal external components, simplifying circuit design and reducing overall cost.
7. Package Type: Typically available in TO-220 package, which offers good thermal conductivity and ease of mounting.
These features make the KA7812ETU a versatile choice for applications in power management, consumer electronics, and industrial systems requiring a stable 12V power supply.
Pinout
The KA7812ETU is a three-terminal linear voltage regulator that provides a fixed output voltage of 12V. It is part of the 78xx series of voltage regulators. Here's a concise overview of its pin count and functions:
- Pin Count: 3 pins
- Pin Functions:
1. Input (Pin 1): This pin receives the input voltage, which should be higher than the output voltage (at least 14V for proper regulation in the case of the 7812).
2. Ground (Pin 2): This is the common ground pin and is connected to the circuit ground. It serves as a reference point for the input and output voltages.
3. Output (Pin 3): This pin provides the regulated output voltage of 12V.
The KA7812ETU is used in a variety of applications requiring a stable 12V power supply from a higher voltage source, and it includes features like thermal overload protection and short circuit protection to enhance its reliability.
- Pin Count: 3 pins
- Pin Functions:
1. Input (Pin 1): This pin receives the input voltage, which should be higher than the output voltage (at least 14V for proper regulation in the case of the 7812).
2. Ground (Pin 2): This is the common ground pin and is connected to the circuit ground. It serves as a reference point for the input and output voltages.
3. Output (Pin 3): This pin provides the regulated output voltage of 12V.
The KA7812ETU is used in a variety of applications requiring a stable 12V power supply from a higher voltage source, and it includes features like thermal overload protection and short circuit protection to enhance its reliability.
Manufacturer
The KA7812ETU is manufactured by ON Semiconductor. ON Semiconductor is a global supplier of semiconductor-based solutions, offering a comprehensive portfolio of energy-efficient power and signal management, logic, standard, and custom devices. They are known for their focus on automotive, industrial, cloud power, and IoT applications. The company aims to provide innovative solutions that address the complex design challenges in various electronics sectors.
Application
The KA7812ETU is a voltage regulator that provides a stable 12V output, making it ideal for various applications. Common areas include:
1. Power Supply Systems: Used for converting varying input voltage to a stable 12V output for electronic circuits.
2. Consumer Electronics: Provides regulated power for devices like televisions, radios, and gaming consoles.
3. Automotive Electronics: Powers 12V systems in vehicles, ensuring consistent performance.
4. Industrial Equipment: Supports automation systems by supplying stable voltage for sensors and controllers.
5. Embedded Systems: Used in microcontroller-based projects requiring a stable voltage source.
6. Communication Devices: Ensures reliable operation of modems and routers by maintaining a consistent voltage level.
These applications benefit from the KA7812ETU's reliability and efficiency in voltage regulation.
1. Power Supply Systems: Used for converting varying input voltage to a stable 12V output for electronic circuits.
2. Consumer Electronics: Provides regulated power for devices like televisions, radios, and gaming consoles.
3. Automotive Electronics: Powers 12V systems in vehicles, ensuring consistent performance.
4. Industrial Equipment: Supports automation systems by supplying stable voltage for sensors and controllers.
5. Embedded Systems: Used in microcontroller-based projects requiring a stable voltage source.
6. Communication Devices: Ensures reliable operation of modems and routers by maintaining a consistent voltage level.
These applications benefit from the KA7812ETU's reliability and efficiency in voltage regulation.
Package
The KA7812ETU is a linear voltage regulator with a TO-220 package type. This package is commonly used for its ability to handle higher power dissipation due to its metal tab that can be attached to a heat sink for better thermal management.
