Overview
The MC7808BD2T is a 1.0 A positive voltage regulator produced by onsemi. This component is part of the MC78XX series, known for its reliability and stability in providing a regulated output voltage. Although the MC7808BD2T is currently obsolete and no longer manufactured, it remains a significant component in the history of voltage regulation technology. The regulator is designed to provide a stable 8.0 V output voltage and is suitable for various applications requiring a fixed voltage supply.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 7.7 | 8.0 | 8.3 | Vdc |
| Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W) | 7.6 | 8.0 | 8.4 | Vdc |
| Line Regulation (10.5 Vdc ≤ Vin ≤ 25 Vdc, IO = 500 mA) | - | - | 10 | mV |
| Load Regulation (5.0 mA ≤ IO ≤ 1.0 A) | - | - | 120 | mV |
| Peak Output Current (TJ = 25°C) | - | - | 2.2 | A |
| Average Temperature Coefficient of Output Voltage | - | -0.3 | - | mV/°C |
Key Features
- Stable Output Voltage: The MC7808BD2T provides a stable output voltage of 8.0 V, with minimal variations over a range of input voltages and operating temperatures.
- High Current Capability: The regulator can supply up to 1.0 A of output current, making it suitable for applications requiring moderate to high current.
- Line and Load Regulation: The component exhibits good line and load regulation, ensuring that the output voltage remains stable despite changes in input voltage and load current.
- Thermal Protection: The regulator includes internal thermal protection to prevent overheating and ensure reliable operation.
- Compact Package: Available in the D2PAK-3 package, which includes a heatsink surface connected to the ground pin, enhancing thermal dissipation.
Applications
The MC7808BD2T is suitable for a variety of applications that require a stable 8.0 V DC power supply. These include:
- Industrial Control Systems: For powering control circuits and sensors in industrial environments.
- Consumer Electronics: In devices such as audio equipment, televisions, and other consumer electronics requiring stable voltage supplies.
- Automotive Systems: For use in automotive electronics where a reliable and stable voltage is crucial.
- Medical Devices: In medical equipment where precise voltage regulation is essential.
Q & A
- What is the output voltage of the MC7808BD2T?
The output voltage of the MC7808BD2T is typically 8.0 V, with a range of 7.7 V to 8.3 V at 25°C. - What is the maximum output current of the MC7808BD2T?
The maximum output current is 1.0 A. - What is the minimum input voltage required for the MC7808BD2T?
The input voltage must remain typically 2.0 V above the output voltage. - Does the MC7808BD2T have thermal protection?
Yes, the regulator includes internal thermal protection to prevent overheating. - In what package is the MC7808BD2T available?
The MC7808BD2T is available in the D2PAK-3 package. - What are the key specifications for line and load regulation?
The line regulation is typically 10 mV, and the load regulation is typically 120 mV over the specified operating conditions. - Is the MC7808BD2T still in production?
No, the MC7808BD2T is currently obsolete and no longer manufactured. - What are some common applications for the MC7808BD2T?
It is used in industrial control systems, consumer electronics, automotive systems, and medical devices. - How does the MC7808BD2T handle temperature variations?
The regulator has a low average temperature coefficient of output voltage, ensuring minimal voltage drift with temperature changes. - What is the purpose of the heatsink surface in the D2PAK-3 package?
The heatsink surface is connected to the ground pin and helps in enhancing thermal dissipation.
