Overview
The MC78M08BDTRKG is a part of the MC78M00/MC78M00A series of positive voltage regulators produced by onsemi. These regulators are designed for local, on-card voltage regulation and are specified for an output current of up to 500 mA. They are similar to the MC7800 series but with half the output current. The MC78M08BDTRKG specifically provides a fixed output voltage of 8.0 V.
These devices are known for their ruggedness under most operating conditions, thanks to internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor.
Key Specifications
| Characteristics | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 7.70 | 8.0 | 8.30 | Vdc |
| Output Voltage Variation (10.5 Vdc ≤ VI ≤ 23 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 7.7 | - | 8.3 | Vdc |
| Line Regulation (TJ = 25°C, 10.5 Vdc ≤ VI ≤ 23 Vdc, IO = 200 mA) | Regline | - | - | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | Regload | - | - | 20 | mV |
| Dropout Voltage (TJ = 25°C) | VI−VO | - | - | 2.0 | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | IOS | - | - | 350 | mA |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | �VO/�T | - | - | ±0.2 | mV/°C |
| Peak Output Current (TJ = 25°C) | IO | - | - | 700 | mA |
Key Features
- No External Components Required: The MC78M08BDTRKG does not need additional external components to function.
- Internal Thermal Overload Protection: This feature shuts down the circuit when subjected to excessive power overload conditions.
- Internal Short Circuit Current Limiting: Limits the maximum current the circuit will pass to prevent damage.
- Output Transistor Safe-Area Compensation: Reduces the output short circuit current as the voltage across the pass transistor increases.
- High Accuracy (±2% for MC78M00A Series): Ensures stable and precise output voltage.
Applications
The MC78M08BDTRKG is suitable for various applications requiring local, on-card voltage regulation. These include:
- Embedded Systems: For powering components within embedded systems.
- Industrial Control Systems: To provide stable voltage in industrial control environments.
- Automotive Systems: The NCV prefix versions are suitable for automotive and other applications requiring high reliability and robustness.
- Consumer Electronics: For use in a variety of consumer electronic devices that require stable voltage regulation.
Q & A
- What is the output voltage of the MC78M08BDTRKG?
The output voltage of the MC78M08BDTRKG is 8.0 V.
- What is the maximum output current of the MC78M08BDTRKG?
The maximum output current is 500 mA with adequate heatsinking.
- Does the MC78M08BDTRKG require external components to function?
No, the MC78M08BDTRKG does not require external components to function.
- What is the dropout voltage of the MC78M08BDTRKG?
The dropout voltage is 2.0 Vdc at TJ = 25°C.
- What is the short circuit current limit of the MC78M08BDTRKG?
The short circuit current limit is 350 mA at TJ = 25°C and VI = 35 V.
- What is the average temperature coefficient of output voltage?
The average temperature coefficient of output voltage is ±0.2 mV/°C at IO = 5.0 mA.
- What is the peak output current of the MC78M08BDTRKG?
The peak output current is 700 mA at TJ = 25°C.
- What are the operating temperature ranges for the MC78M08BDTRKG?
The operating temperature ranges are from -40°C to +125°C.
- Does the MC78M08BDTRKG have thermal overload protection?
Yes, it has internal thermal overload protection that shuts down the circuit under excessive power overload conditions.
- What are some common applications for the MC78M08BDTRKG?
Common applications include embedded systems, industrial control systems, automotive systems, and consumer electronics.
