規格
| 屬性 | 價值 |
| Package / Case | Tube |
| Part Status | Active |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 35V |
| Voltage - Output (Min/Fixed) | 8V |
| Voltage Dropout (Max) | 2V @ 1A (Typ) |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | 8 mA |
| PSRR | 56dB (120Hz) |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Mounting Type | Through Hole |
概述
Description
The L7808CV is a three-terminal positive voltage regulator from the LM78xx series, designed to provide a stable output voltage of 8V with a maximum output current of 1.5A. It is widely used in electronic circuits requiring a reliable power supply, such as in power management applications, battery chargers, and embedded systems. The L7808CV is known for its versatility and ease of use, requiring only minimal external components. Key features include internal current limiting, thermal shutdown, and safe area protection, ensuring the device operates safely under various conditions. It typically operates with an input voltage ranging from about 10V to 35V. The L7808CV is available in a TO-220 package, which facilitates heat dissipation. Its robust design makes it suitable for use in consumer electronics, industrial automation, and telecommunications equipment. When integrating the L7808CV into a circuit, it's essential to consider proper heat sinking and decoupling capacitors to ensure optimal performance and longevity.
Equivalent
The L7808CV is a voltage regulator that provides a fixed output of 8V. Equivalent products include the LM7808 from Texas Instruments, UA7808 from Fairchild (now part of ON Semiconductor), KA7808 from Samsung, and MC7808 from ON Semiconductor. These alternatives have similar specifications and can be used interchangeably in most applications requiring an 8V output voltage with a similar current rating and package type. Always check the datasheets for exact compatibility in terms of thermal and electrical characteristics.
Features
The L7808CV is a three-terminal positive voltage regulator from STMicroelectronics. It is designed to provide a stable 8V output voltage, making it suitable for a wide range of applications. Key features include:
1. Output Voltage: Provides a fixed 8V output.
2. Current Capability: Can deliver up to 1.5A of output current.
3. Thermal Protection: Equipped with thermal shutdown to prevent overheating.
4. Short-Circuit Protection: Includes current limiting features to safeguard against overloads.
5. Dropout Voltage: Typically around 2V, meaning the input voltage must be at least 10V for proper operation.
6. Operating Temperature: Functions effectively over a wide temperature range.
7. Package: Available in the TO-220 package, which offers easy mounting and good thermal performance.
8. Low Quiescent Current: Minimal current draw from the input source when not loaded.
These features make the L7808CV a robust and reliable choice for applications requiring a steady 8V power supply.
1. Output Voltage: Provides a fixed 8V output.
2. Current Capability: Can deliver up to 1.5A of output current.
3. Thermal Protection: Equipped with thermal shutdown to prevent overheating.
4. Short-Circuit Protection: Includes current limiting features to safeguard against overloads.
5. Dropout Voltage: Typically around 2V, meaning the input voltage must be at least 10V for proper operation.
6. Operating Temperature: Functions effectively over a wide temperature range.
7. Package: Available in the TO-220 package, which offers easy mounting and good thermal performance.
8. Low Quiescent Current: Minimal current draw from the input source when not loaded.
These features make the L7808CV a robust and reliable choice for applications requiring a steady 8V power supply.
Pinout
The L7808CV is a three-terminal positive voltage regulator in the TO-220 package. It is designed to provide a stable 8V output with a maximum output current of 1.5A. The pin count and functions are as follows:
1. Pin 1 (Input): This pin receives the unregulated input voltage. It should typically be higher than the output voltage to ensure proper regulation.
2. Pin 2 (Ground): This is the common ground pin for both the input and output.
3. Pin 3 (Output): This pin provides the regulated 8V output.
The L7808CV is often used in power supply circuits to maintain a consistent voltage level and reduce ripple from the input. It includes built-in protection against overheating and overcurrent, making it robust for various applications.
1. Pin 1 (Input): This pin receives the unregulated input voltage. It should typically be higher than the output voltage to ensure proper regulation.
2. Pin 2 (Ground): This is the common ground pin for both the input and output.
3. Pin 3 (Output): This pin provides the regulated 8V output.
The L7808CV is often used in power supply circuits to maintain a consistent voltage level and reduce ripple from the input. It includes built-in protection against overheating and overcurrent, making it robust for various applications.
Manufacturer
The L7808CV is manufactured by STMicroelectronics. STMicroelectronics is a multinational corporation that designs, develops, manufactures, and markets a wide range of semiconductor and electronic components. Founded in 1987 through the merger of the Italian company SGS Microelettronica and the French company Thomson Semiconducteurs, STMicroelectronics is headquartered in Geneva, Switzerland. The company is involved in various sectors, including automotive, industrial, personal electronics, and communications equipment. STMicroelectronics focuses on delivering innovative solutions in fields such as microcontrollers, sensors, power management, and digital and analog integrated circuits.
Application
The L7808CV is a fixed voltage linear voltage regulator that outputs a stable 8V DC. It is commonly used in various applications, including:
1. Power Supply Systems: Used to provide a stable 8V output from higher voltage sources.
2. Consumer Electronics: Powers devices requiring a steady 8V supply, such as radios and audio equipment.
3. Industrial Automation: Supports sensors and control systems with specific voltage requirements.
4. Automotive Electronics: Powers low voltage components and subsystems.
5. Embedded Systems: Provides regulated power to microcontrollers and other digital circuits.
6. Communication Devices: Ensures stable power to radios and networking equipment.
Its thermal protection and overload capabilities make it suitable for robust applications.
1. Power Supply Systems: Used to provide a stable 8V output from higher voltage sources.
2. Consumer Electronics: Powers devices requiring a steady 8V supply, such as radios and audio equipment.
3. Industrial Automation: Supports sensors and control systems with specific voltage requirements.
4. Automotive Electronics: Powers low voltage components and subsystems.
5. Embedded Systems: Provides regulated power to microcontrollers and other digital circuits.
6. Communication Devices: Ensures stable power to radios and networking equipment.
Its thermal protection and overload capabilities make it suitable for robust applications.
Package
The L7808CV is a linear voltage regulator with a TO-220 package type. This package allows for efficient heat dissipation and is commonly used in power supply applications.
