Overview
The MC7812BDTG is a voltage regulator from onsemi, designed to provide a stable 12V output voltage. This component is part of the 78XX series, which is widely used in various electronic systems for voltage regulation. The MC7812BDTG is available in the DPAK package, making it suitable for applications where space is limited but high performance is required.
This regulator is known for its high accuracy, low dropout voltage, and robust thermal performance, making it an excellent choice for a variety of power supply designs.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 11.5 | 12 | 12.5 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | VO | 11.4 | 12 | 12.6 | Vdc |
| Line Regulation (TJ = 25°C) | Regline | - | - | 7.5 | mV |
| Load Regulation (TJ = 25°C) | Regload | - | - | 1.6 | mV |
| Quiescent Current | IB | 3.4 | - | 8.0 | mA |
| Peak Output Current (TJ = 25°C) | Imax | - | - | 2.2 | A |
| Short Circuit Current Limit (TA = 25°C) | ISC | - | - | 0.2 | A |
| Dropout Voltage (IO = 1.0 A, TJ = 25°C) | VI - VO | - | - | 2.0 | Vdc |
| Output Noise Voltage (TA = 25°C) | Vn | - | - | 10 | μV/VO |
| Output Resistance (f = 1.0 kHz) | rO | - | - | 1.1 | mΩ |
| Average Temperature Coefficient of Output Voltage | TCVO | - | - | -0.8 | mV/°C |
Key Features
- High Accuracy: The MC7812BDTG offers a tight output voltage tolerance, ensuring stable voltage regulation across various operating conditions.
- Low Dropout Voltage: With a dropout voltage of 2.0 Vdc, this regulator can operate efficiently even when the input voltage is close to the output voltage.
- High Current Capability: It can supply up to 1.0 A of output current, making it suitable for a wide range of applications.
- Thermal Performance: Available in the DPAK package, it offers good thermal dissipation, which is crucial for high-power applications.
- Short Circuit Protection: The regulator includes a short circuit current limit to protect against overcurrent conditions.
- Low Output Noise: The MC7812BDTG has a low output noise voltage, which is essential for applications requiring clean power supply.
Applications
- Power Supplies: Ideal for use in linear power supplies where a stable 12V output is required.
- Industrial Control Systems: Suitable for industrial control systems, automation, and robotics where reliable voltage regulation is critical.
- Consumer Electronics: Used in various consumer electronics such as audio equipment, medical devices, and other applications requiring stable DC voltage.
- Automotive Systems: Can be used in automotive systems where a reliable and stable voltage supply is necessary.
- Embedded Systems: Applicable in embedded systems, IoT devices, and other electronic systems that require a stable and efficient power supply.
Q & A
- What is the output voltage of the MC7812BDTG?
The output voltage of the MC7812BDTG is 12V with a tolerance of 11.5V to 12.5V at TJ = 25°C.
- What is the maximum output current of the MC7812BDTG?
The maximum output current of the MC7812BDTG is 1.0 A.
- What is the dropout voltage of the MC7812BDTG?
The dropout voltage of the MC7812BDTG is 2.0 Vdc at IO = 1.0 A and TJ = 25°C.
- Does the MC7812BDTG have short circuit protection?
Yes, the MC7812BDTG includes a short circuit current limit to protect against overcurrent conditions.
- What is the quiescent current of the MC7812BDTG?
The quiescent current of the MC7812BDTG is typically 3.4 mA to 8.0 mA.
- What is the output noise voltage of the MC7812BDTG?
The output noise voltage of the MC7812BDTG is 10 μV/VO at TA = 25°C.
- What is the average temperature coefficient of output voltage for the MC7812BDTG?
The average temperature coefficient of output voltage for the MC7812BDTG is -0.8 mV/°C.
- In what package is the MC7812BDTG available?
The MC7812BDTG is available in the DPAK package.
- What are some common applications of the MC7812BDTG?
The MC7812BDTG is commonly used in power supplies, industrial control systems, consumer electronics, automotive systems, and embedded systems.
- What is the operating junction temperature range for the MC7812BDTG?
The operating junction temperature range for the MC7812BDTG is from -40°C to 125°C.
