L7812CV

The L7812CV is a popular positive 12V linear voltage regulator IC. It is designed to provide a stable 12V DC output from a wide range of input voltages, typically between 14V and 35V. This makes it suitable for a variety of electronic devices and circuits that require a constant 12V power supply.

Key Features and Specifications

1. Stable 12V Output:
   • The L7812CV ensures that the output voltage remains stable at 12V, regardless of variations in the input voltage within its specified range.
2. Wide Input Voltage Range:
   • It can accept input voltages from approximately 14V to 35V, providing flexibility in power supply design.
3. Maximum Output Current:
   • The IC can deliver a maximum output current of 1.5A, which is sufficient for many low-power electronic devices.
4. Three-Pin Configuration:
   • The L7812CV has three pins: input (VIN), ground (GND), and output (VOUT). The input pin receives the unregulated input voltage, the ground pin is connected to the circuit’s ground, and the output pin provides the regulated 12V DC voltage.
5. Over-Temperature and Overload Protection:
   • The L7812CV includes built-in over-temperature and overload protection circuits to prevent damage to the IC and the connected circuitry.
6. TO-220 Package:
   • The IC is packaged in a TO-220 plastic case, which provides good thermal dissipation and ease of installation.
7. Internal Components:
   • The L7812CV is manufactured using polysilicon technology and includes a power transistor, a voltage regulator, an overload protection circuit, and a thermal protection circuit.

Applications

The L7812CV is widely used in various electronic applications, including:

• Power supply circuits in electronic devices
• Power amplification circuits
• LED lighting systems
• Motor drive circuits
• Test and measurement equipment
• DIY electronic projects and school experiments

Additional Notes

• The L7812CV operates efficiently within its specified input voltage range and output current limits.
• It is essential to observe the maximum operating temperature and input voltage specifications to avoid damaging the IC.
• The IC’s linear regulation ensures that the output voltage remains stable, even under varying load conditions.

In summary, the L7812CV is a reliable and versatile 12V linear voltage regulator IC that offers stable output voltage, wide input voltage range, and protection features. Its TO-220 packaging and internal components make it suitable for a wide range of electronic applications.