Overview
The MC78M09BDTG is a positive linear voltage regulator from onsemi, part of the MC78M00/MC78M00A series. This regulator is similar to the popular MC7800 Series but is specified for half the output current. It is designed for local, on-card voltage regulation and features internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, making it robust under various operating conditions.
The MC78M09BDTG provides a maximum output current of 500 mA with adequate heatsinking and is available in DPAK-3 and TO-220 packages. It offers high accuracy options and is suitable for industrial applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (TJ = 25°C) | 8.64 - 9.45 | Vdc |
| Output Current (Typical) | 500 | mA |
| Input Voltage Range | 11.5 - 23 | Vdc |
| Line Regulation (TJ = 25°C, IO = 200 mA) | 6.0 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | 20 | mV |
| Average Temperature Coefficient of Output Voltage | ±0.2 | mV/°C |
| Peak Output Current (TJ = 25°C) | 700 | mA |
| Temperature Range | -40°C to +125°C | °C |
| Package | DPAK-3 | |
| Tolerance | 4% |
Key Features
- No external components required.
- Internal thermal overload protection.
- Internal short circuit current limiting.
- Output transistor safe-area compensation.
- High accuracy options available (±2% for certain models).
- Pb-free packages available.
Applications
The MC78M09BDTG is suitable for various industrial applications requiring stable and regulated voltage. It is particularly useful in:
- Local, on-card voltage regulation.
- Power supplies for electronic equipment.
- Industrial control systems.
- Automotive systems requiring robust voltage regulation.
Q & A
- What is the maximum output current of the MC78M09BDTG?
The maximum output current is 500 mA with adequate heatsinking.
- What are the available packages for the MC78M09BDTG?
The regulator is available in DPAK-3 and TO-220 packages.
- What is the temperature range for the MC78M09BDTG?
The temperature range is -40°C to +125°C.
- Does the MC78M09BDTG require external components?
No, the MC78M09BDTG does not require external components.
- What is the line regulation of the MC78M09BDTG?
The line regulation is 6.0 mV at TJ = 25°C and IO = 200 mA.
- Is the MC78M09BDTG protected against thermal overload?
Yes, it has internal thermal overload protection.
- What is the average temperature coefficient of output voltage?
The average temperature coefficient of output voltage is ±0.2 mV/°C.
- What is the peak output current of the MC78M09BDTG?
The peak output current is 700 mA at TJ = 25°C.
- Is the MC78M09BDTG available in Pb-free packages?
Yes, Pb-free packages are available.
- What are some typical applications of the MC78M09BDTG?
It is used in local, on-card voltage regulation, power supplies, industrial control systems, and automotive systems.
