Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputConfiguration | Negative |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | -35V |
| Voltage-Output(Min/Fixed) | -12V |
| VoltageDropout(Max) | 1.1V @ 1A (Typ) |
| Current-Output | 1.5A |
| Current-Quiescent(Iq) | 3 mA |
| PSRR | 60dB (120Hz) |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-263-3, D²Pak (2 Leads + Tab), TO-263AB |
Tổng quan
Description
The L7912CD2T-TR is a fixed negative voltage regulator that provides a stable -12V output from a higher voltage input, commonly used in power supply systems. Manufactured by STMicroelectronics, it is part of the L79 series of three-terminal regulators designed for various applications requiring negative voltage regulation. The device is capable of delivering up to 1.5A of output current, maintaining a stable output with minimal external components.
Key features include internal current limiting, thermal shutdown, and safe area protection, ensuring reliability and robustness in operation. The L7912CD2T-TR comes in a TO-220 package, offering ease of installation and efficient heat dissipation. It typically requires only two external capacitors to function properly, simplifying circuit design. This regulator is suitable for applications in consumer electronics, industrial equipment, and any system requiring a consistent -12V power supply. Its compact form factor and high performance make it a favored choice for designers looking to implement reliable negative voltage regulation in their projects.
Key features include internal current limiting, thermal shutdown, and safe area protection, ensuring reliability and robustness in operation. The L7912CD2T-TR comes in a TO-220 package, offering ease of installation and efficient heat dissipation. It typically requires only two external capacitors to function properly, simplifying circuit design. This regulator is suitable for applications in consumer electronics, industrial equipment, and any system requiring a consistent -12V power supply. Its compact form factor and high performance make it a favored choice for designers looking to implement reliable negative voltage regulation in their projects.
Equivalent
The L7912CD2T-TR is a negative voltage regulator, typically providing a -12V output. Equivalent products include LM7912 from Texas Instruments, MC7912 from ON Semiconductor, and NTE7912 from NTE Electronics. These alternatives should have similar electrical characteristics and pin configurations, but always check the datasheets for compatibility in your specific application.
Features
The L7912CD2T-TR is a negative voltage regulator integrated circuit. Key features include:
1. Output Voltage: It provides a fixed output voltage of -12V.
2. Output Current: Capable of delivering up to 1.5A of output current.
3. Thermal Protection: Includes internal thermal overload protection to prevent damage from overheating.
4. Short-Circuit Protection: Offers internal current limiting to handle short-circuit situations safely.
5. Low Quiescent Current: Designed for efficiency, with low standby current consumption.
6. Dropout Voltage: Typically has a dropout voltage around 2V, ensuring good performance even with lower input voltages.
7. Package Type: Available in a D²PAK surface-mount package, suitable for automated assembly processes.
8. Applications: Commonly used in a variety of electronic circuits requiring stable negative voltage, such as in power supplies and battery chargers.
This regulator is part of the 79xx series, known for their reliability and performance in negative voltage regulation.
1. Output Voltage: It provides a fixed output voltage of -12V.
2. Output Current: Capable of delivering up to 1.5A of output current.
3. Thermal Protection: Includes internal thermal overload protection to prevent damage from overheating.
4. Short-Circuit Protection: Offers internal current limiting to handle short-circuit situations safely.
5. Low Quiescent Current: Designed for efficiency, with low standby current consumption.
6. Dropout Voltage: Typically has a dropout voltage around 2V, ensuring good performance even with lower input voltages.
7. Package Type: Available in a D²PAK surface-mount package, suitable for automated assembly processes.
8. Applications: Commonly used in a variety of electronic circuits requiring stable negative voltage, such as in power supplies and battery chargers.
This regulator is part of the 79xx series, known for their reliability and performance in negative voltage regulation.
Pinout
The L7912CD2T-TR is a three-terminal negative voltage regulator with a fixed output voltage of -12V. It is part of the 79xx series of voltage regulators, which are widely used for regulating negative voltage levels. This specific device is packaged in a D2PAK (TO-263) format, suitable for surface mounting.
Pin Count and Functions:
1. Input (Pin 1): This is where the unregulated voltage is supplied. The input voltage must be more negative than -14V for proper operation.
2. Ground (Pin 2): This pin is connected to the ground of the circuit. 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 L7912CD2T-TR provides features such as over-current protection, over-temperature shutdown, and safe area protection, making it robust for various applications.
Pin Count and Functions:
1. Input (Pin 1): This is where the unregulated voltage is supplied. The input voltage must be more negative than -14V for proper operation.
2. Ground (Pin 2): This pin is connected to the ground of the circuit. 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 L7912CD2T-TR provides features such as over-current protection, over-temperature shutdown, and safe area protection, making it robust for various applications.
Manufacturer
The L7912CD2T-TR is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of semiconductor products. The company serves various sectors, including automotive, industrial, personal electronics, computer, and communication equipment. With a focus on providing innovative and sustainable solutions, STMicroelectronics plays a key role in the development of technologies such as microcontrollers, sensors, power management devices, and integrated circuits.
Application
The L7912CD2T-TR is a negative voltage regulator typically used in various electronic applications for voltage regulation purposes. Its main application areas include:
1. Power Supply Systems: Used to provide a stable -12V output from a higher voltage input, ensuring consistent power delivery to electronic circuits.
2. Consumer Electronics: Incorporated in devices that require a stable negative voltage for proper functionality.
3. Industrial Equipment: Used in control systems requiring precise voltage regulation.
4. Communication Systems: Assists in maintaining stable voltage levels in communication devices.
5. Computing: Used in motherboards and other components where regulated negative voltage is necessary.
Its versatility and reliability make it suitable for a broad range of electronic applications.
1. Power Supply Systems: Used to provide a stable -12V output from a higher voltage input, ensuring consistent power delivery to electronic circuits.
2. Consumer Electronics: Incorporated in devices that require a stable negative voltage for proper functionality.
3. Industrial Equipment: Used in control systems requiring precise voltage regulation.
4. Communication Systems: Assists in maintaining stable voltage levels in communication devices.
5. Computing: Used in motherboards and other components where regulated negative voltage is necessary.
Its versatility and reliability make it suitable for a broad range of electronic applications.
Package
The L7912CD2T-TR is a linear voltage regulator in a D²PAK (also known as TO-263) package. It is designed for surface-mount applications and provides a regulated output voltage, typically used for various electronic circuit applications requiring a negative voltage regulation.
