Overview
The MC78M12BDTRKG is a 12V, 500 mA positive linear voltage regulator produced by onsemi. It is part of the MC78M00 series, which is similar to the popular MC7800 series but specified for half the output current. These three-terminal regulators are designed for local, on-card voltage regulation and are known for their ruggedness under various operating conditions.
The device features internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, ensuring reliable operation. It does not require external components and is available in Pb-free packages.
Key Specifications
| Characteristic | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 11.50 | 11.76 | 12.00 | Vdc |
| Output Voltage Variation (14.5 Vdc ≤ VI ≤ 27 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | 11.4 | - | 12.6 | Vdc |
| Line Regulation (TJ = 25°C, 14.5 Vdc ≤ VI ≤ 30 Vdc, IO = 200 mA) | - | 8.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | - | - | 25 | mV |
| Input Bias Current (TJ = 25°C) | - | 3.2 | 6.0 | mA |
| Dropout Voltage (TJ = 25°C) | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | - | 350 | - | mA |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | - | ±0.3 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | - | 700 | - | mA |
| Operating Temperature Range | -40°C | - | +125°C | °C |
| Package Type | - | - | DPAK-3 (TO-252-2) | - |
Key Features
- No external components required for operation.
- Internal thermal overload protection and short circuit current limiting.
- Output transistor safe-area compensation.
- High accuracy versions available (e.g., MC78M00A for 5.0 V, 8.0 V, 12 V, and 15 V with +/-2% tolerance).
- Pb-free packages available.
- High power supply rejection ratio (PSRR) and low noise.
Applications
The MC78M12BDTRKG is suitable for a variety of applications requiring stable and regulated voltage supply. These include:
- Local, on-card voltage regulation in electronic devices.
- Industrial control systems.
- Consumer electronics.
- Automotive systems (where applicable).
- Any application requiring a reliable, low-dropout voltage regulator.
Q & A
- What is the output voltage of the MC78M12BDTRKG?
The output voltage is 12V with a tolerance of +/-2% for the MC78M00A version and +/-4% for the standard version.
- What is the maximum output current of the MC78M12BDTRKG?
The maximum output current is 500 mA.
- What is the operating temperature range of the MC78M12BDTRKG?
The operating temperature range is -40°C to +125°C.
- What package types are available for the MC78M12BDTRKG?
The device is available in DPAK-3 (TO-252-2) package.
- Does the MC78M12BDTRKG require external components for operation?
No, it does not require external components for operation.
- What is the dropout voltage of the MC78M12BDTRKG?
The dropout voltage is 2.0 Vdc at TJ = 25°C.
- What is the short circuit current limit of the MC78M12BDTRKG?
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 for the MC78M12BDTRKG?
The average temperature coefficient of output voltage is ±0.3 mV/°C at IO = 5.0 mA.
- What are some typical applications of the MC78M12BDTRKG?
Typical applications include local, on-card voltage regulation in electronic devices, industrial control systems, consumer electronics, and automotive systems.
- Is the MC78M12BDTRKG available in Pb-free packages?
