Overview
The MC7812BT is a fixed-voltage linear regulator produced by onsemi, designed to provide a stable and reliable voltage source for various electronic applications. This regulator is part of the 78XX series, known for its high performance and versatility. The MC7812BT is packaged in a TO-220-3 format, making it suitable for through-hole mounting and easy integration into a wide range of circuits.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 11.4 | 12 | 12.6 | Vdc |
| Input Voltage - Min | 14.5 | Vdc | ||
| Input Voltage - Max | 30 | Vdc | ||
| Output Current - Max | 1 | A | ||
| Dropout Voltage (Typ @ 1A) | 2 | V | ||
| Line Regulation (Max) | 0.24% | |||
| Load Regulation (Max) | 0.24% | |||
| Operating Temperature TJ - Min | -40 | °C | ||
| Operating Temperature TJ - Max | 125 | °C | ||
| Quiescent Current (Typ @ 1A) | 8 | mA | ||
| PSRR (Typ @ 1kHz) | 60 | dB |
Key Features
- Fixed Output Voltage: The MC7812BT provides a fixed output voltage of 12V, making it ideal for applications requiring a stable voltage source.
- High Current Capability: It can supply up to 1A of output current, suitable for high-current applications.
- Low Dropout Voltage: With a typical dropout voltage of 2V at 1A, it ensures efficient operation even at low input voltages.
- Good Line and Load Regulation: The regulator offers excellent line and load regulation, ensuring minimal voltage variation under different input and load conditions.
- Wide Operating Temperature Range: It operates over a temperature range of -40°C to 125°C, making it suitable for various environmental conditions.
- Compact TO-220 Package: The TO-220 package is easy to mount and provides good heat dissipation, making it a practical choice for many applications.
Applications
- Power Supplies: The MC7812BT is commonly used in power supply circuits to provide a stable 12V output.
- Industrial Control Systems: It is used in industrial control systems where reliable voltage regulation is crucial.
- Consumer Electronics: This regulator is found in various consumer electronics, such as audio equipment, medical devices, and other appliances requiring stable voltage.
- Automotive Systems: It can be used in automotive systems where a stable voltage is necessary for reliable operation.
- Embedded Systems: The MC7812BT is also used in embedded systems that require a fixed and stable voltage source.
Q & A
- What is the output voltage of the MC7812BT?
The output voltage of the MC7812BT is 12V, with a tolerance range of 11.4V to 12.6V.
- What is the maximum output current of the MC7812BT?
The maximum output current of the MC7812BT is 1A.
- What is the typical dropout voltage of the MC7812BT?
The typical dropout voltage of the MC7812BT is 2V at 1A.
- What is the operating temperature range of the MC7812BT?
The operating temperature range of the MC7812BT is -40°C to 125°C.
- What package type is the MC7812BT available in?
The MC7812BT is available in a TO-220-3 package.
- What is the line regulation of the MC7812BT?
The line regulation of the MC7812BT is 0.24% maximum.
- What is the load regulation of the MC7812BT?
The load regulation of the MC7812BT is 0.24% maximum.
- What is the quiescent current of the MC7812BT?
The quiescent current of the MC7812BT is typically 8mA.
- What is the PSRR of the MC7812BT at 1kHz?
The PSRR (Power Supply Rejection Ratio) of the MC7812BT at 1kHz is typically 60dB.
- Is the MC7812BT RoHS compliant?
No, the MC7812BT is not RoHS compliant.
