Overview
The MC7812BDT is a 12V fixed-voltage positive linear voltage regulator produced by ON Semiconductor. This device is part of the MC78XX series, known for its high performance and reliability in voltage regulation. The MC7812BDT is designed to provide a stable output voltage with minimal dropout and is suitable for a wide range of applications requiring a regulated 12V supply.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 11.5 | 12 | 12.5 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | 11.5 | 12 | 12.5 | Vdc |
| Input Voltage (Max) | 35 | Vdc | ||
| Peak Output Current (TJ = 25°C) | 2.2 | A | ||
| Line Regulation (TJ = 25°C) | 10 | mV | ||
| Load Regulation | 120 | mV | ||
| Output Resistance (f = 1.0 kHz) | 1.1 | mΩ | ||
| Short Circuit Current Limit (TA = 25°C) | 0.2 | A | ||
| Average Temperature Coefficient of Output Voltage | -0.8 | mV/°C |
Key Features
- Fixed Output Voltage: The MC7812BDT provides a fixed output voltage of 12V, making it ideal for applications requiring a stable voltage supply.
- High Current Capability: The device can handle output currents up to 1.0 A, making it suitable for power-intensive applications.
- Low Dropout Voltage: The regulator has a low dropout voltage, ensuring efficient operation even when the input voltage is close to the output voltage.
- Line and Load Regulation: Excellent line and load regulation ensure that the output voltage remains stable despite changes in input voltage or load current.
- Thermal Protection: The device includes internal thermal shutdown to protect against overheating.
- Packaging: Available in DPAK-3 package, which is compact and suitable for surface mount applications.
Applications
The MC7812BDT is versatile and can be used in a variety of applications, including:
- Power Supplies: For building regulated power supplies in electronic equipment.
- Embedded Systems: In microcontroller-based systems that require a stable voltage supply.
- Automotive Electronics: For use in automotive systems where a reliable voltage regulator is crucial.
- Industrial Control Systems: In industrial automation and control systems requiring stable voltage supplies.
- Consumer Electronics: In various consumer electronic devices such as audio equipment, televisions, and other appliances.
Q & A
- What is the output voltage of the MC7812BDT?
The output voltage of the MC7812BDT is 12V. - What is the maximum input voltage for the MC7812BDT?
The maximum input voltage for the MC7812BDT is 35V. - What is the peak output current of the MC7812BDT?
The peak output current of the MC7812BDT is 2.2A. - What is the typical line regulation of the MC7812BDT?
The typical line regulation of the MC7812BDT is around 10 mV. - What is the average temperature coefficient of output voltage for the MC7812BDT?
The average temperature coefficient of output voltage for the MC7812BDT is -0.8 mV/°C. - What package type is the MC7812BDT available in?
The MC7812BDT is available in the DPAK-3 package. - Does the MC7812BDT have thermal protection?
Yes, the MC7812BDT includes internal thermal shutdown for protection against overheating. - What are some common applications of the MC7812BDT?
The MC7812BDT is commonly used in power supplies, embedded systems, automotive electronics, industrial control systems, and consumer electronics. - What is the minimum load current required for the MC7812BDT to maintain regulation?
The MC7812BDT can maintain regulation with a load current as low as 5.0 mA. - Is the MC7812BDT RoHS compliant?
Yes, the MC7812BDT is available in RoHS-compliant versions, such as the MC7812BDTG.
