規格
| 屬性 | 價值 |
| Package | Tube |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 35V |
| Voltage-Output(Min/Fixed) | 9V |
| VoltageDropout(Max) | 2V @ 1A (Typ) |
| Current-Output | 1.5A |
| Current-Quiescent(Iq) | 8 mA |
| PSRR | 55dB (120Hz) |
| ProtectionFeatures | Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | TO-220-3 |
概述
Description
The L7809CV is a voltage regulator from the 78xx series, which is designed to provide a stable 9V output from a higher voltage input. It is a three-terminal positive regulator commonly used in electronic circuits to ensure a consistent voltage supply, protecting components from voltage fluctuations. The device is capable of delivering an output current of up to 1.5A, making it suitable for a variety of applications, including power supplies for microcontrollers, sensors, and other electronic devices.
Key features of the L7809CV include internal current limiting, thermal shutdown, and safe area protection, which enhance its reliability and safety. It is typically housed in a TO-220 package, which allows for easy mounting and good heat dissipation, though adequate heat sinking may be necessary under higher load conditions. The L7809CV is widely appreciated for its simplicity, cost-effectiveness, and robustness, making it a staple in hobbyist projects and professional electronic designs alike.
Key features of the L7809CV include internal current limiting, thermal shutdown, and safe area protection, which enhance its reliability and safety. It is typically housed in a TO-220 package, which allows for easy mounting and good heat dissipation, though adequate heat sinking may be necessary under higher load conditions. The L7809CV is widely appreciated for its simplicity, cost-effectiveness, and robustness, making it a staple in hobbyist projects and professional electronic designs alike.
Equivalent
The L7809CV is a 9V, 1.5A positive voltage regulator. Equivalent products include:
1. LM7809 from Texas Instruments
2. MC7809 from ON Semiconductor
3. UA7809 from Fairchild Semiconductor
4. KA7809 from Samsung
5. NTE9609 from NTE Electronics
These regulators offer similar voltage and current ratings, making them suitable substitutes in most applications. Always verify the specifications to ensure compatibility with your specific application.
1. LM7809 from Texas Instruments
2. MC7809 from ON Semiconductor
3. UA7809 from Fairchild Semiconductor
4. KA7809 from Samsung
5. NTE9609 from NTE Electronics
These regulators offer similar voltage and current ratings, making them suitable substitutes in most applications. Always verify the specifications to ensure compatibility with your specific application.
Features
The L7809CV is a voltage regulator from the 78xx series, designed to provide a stable 9V output with a maximum current of 1.5A. Key features include:
1. Output Voltage: Delivers a regulated 9V output.
2. Input Voltage Range: Typically requires an input voltage of 11.5V to 35V to maintain proper regulation.
3. Current Capability: Can supply up to 1.5A of load current.
4. Thermal Protection: Includes an internal thermal overload shutdown to prevent damage due to excessive heat.
5. Short-circuit Protection: Offers current limiting to protect against short circuits.
6. Low Quiescent Current: Minimizes power consumption in low-load conditions.
7. Package Type: TO-220 package, which facilitates easy mounting and heat dissipation.
8. Dropout Voltage: Typically around 2V, indicating the minimum difference between input and output voltages needed for proper regulation.
9. General-Purpose Use: Suitable for a wide range of electronic applications requiring stable power supply.
These features make the L7809CV a reliable choice for circuits requiring consistent 9V power.
1. Output Voltage: Delivers a regulated 9V output.
2. Input Voltage Range: Typically requires an input voltage of 11.5V to 35V to maintain proper regulation.
3. Current Capability: Can supply up to 1.5A of load current.
4. Thermal Protection: Includes an internal thermal overload shutdown to prevent damage due to excessive heat.
5. Short-circuit Protection: Offers current limiting to protect against short circuits.
6. Low Quiescent Current: Minimizes power consumption in low-load conditions.
7. Package Type: TO-220 package, which facilitates easy mounting and heat dissipation.
8. Dropout Voltage: Typically around 2V, indicating the minimum difference between input and output voltages needed for proper regulation.
9. General-Purpose Use: Suitable for a wide range of electronic applications requiring stable power supply.
These features make the L7809CV a reliable choice for circuits requiring consistent 9V power.
Pinout
The L7809CV is a voltage regulator in the L78xx series, which provides a fixed output voltage. The L7809CV specifically delivers a 9V output from a higher input voltage. It typically comes in a TO-220 package and has three pins. Here are the pin functions:
1. Input (Pin 1): This pin is where the unregulated input voltage is applied. The input voltage must be higher than 9V to ensure proper regulation.
2. Ground (Pin 2): This is the common ground pin for both the input and output. It is connected to the ground reference of the circuit.
3. Output (Pin 3): This pin provides a regulated 9V output. The load is connected to this pin to receive the stable 9V supply.
The L7809CV can supply up to 1.5A of current with appropriate heat sinking, and it features protections like thermal shutdown and short-circuit protection to ensure reliable operation.
1. Input (Pin 1): This pin is where the unregulated input voltage is applied. The input voltage must be higher than 9V to ensure proper regulation.
2. Ground (Pin 2): This is the common ground pin for both the input and output. It is connected to the ground reference of the circuit.
3. Output (Pin 3): This pin provides a regulated 9V output. The load is connected to this pin to receive the stable 9V supply.
The L7809CV can supply up to 1.5A of current with appropriate heat sinking, and it features protections like thermal shutdown and short-circuit protection to ensure reliable operation.
Manufacturer
The L7809CV is manufactured by STMicroelectronics, a global semiconductor company. STMicroelectronics is a leading integrated device manufacturer that designs and produces a wide range of semiconductor products, including microcontrollers, power management circuits, sensors, and analog devices. The company serves various markets, such as automotive, industrial, personal electronics, and communications equipment. Headquartered in Geneva, Switzerland, STMicroelectronics operates globally with research and development, manufacturing, and sales offices around the world.
Application
The L7809CV is a voltage regulator used in various applications that require a stable 9V output. Common areas include:
1. Power Supply Design: Provides a steady voltage output in power supply units.
2. Embedded Systems: Powers microcontrollers and related components.
3. Consumer Electronics: Used in devices requiring reliable voltage regulation.
4. Industrial Equipment: Ensures stable operation of sensors and control circuits.
5. Communication Devices: Powers components in radios and transmitters.
6. Automotive Electronics: Used in car audio systems and other onboard electronics.
7. Prototyping and Development: Popular in hobbyist and educational projects for powering circuits.
Overall, it is favored for its simplicity and efficiency in maintaining a constant voltage output.
1. Power Supply Design: Provides a steady voltage output in power supply units.
2. Embedded Systems: Powers microcontrollers and related components.
3. Consumer Electronics: Used in devices requiring reliable voltage regulation.
4. Industrial Equipment: Ensures stable operation of sensors and control circuits.
5. Communication Devices: Powers components in radios and transmitters.
6. Automotive Electronics: Used in car audio systems and other onboard electronics.
7. Prototyping and Development: Popular in hobbyist and educational projects for powering circuits.
Overall, it is favored for its simplicity and efficiency in maintaining a constant voltage output.
Package
The L7809CV is a voltage regulator with a TO-220 package type. This package is commonly used for devices that need to dissipate heat effectively, as it provides a metal tab for heat sinking.
