Overview
The MC78M12ACTG 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, making it suitable for local, on-card voltage regulation. It features internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, ensuring robust performance under various operating conditions. The maximum output current, with adequate heatsinking, is 500 mA.
Key Specifications
| Characteristics | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 11.50 | 11.76 | 12.50 | Vdc |
| Output Voltage Variation (14.5 Vdc ≤ VI ≤ 27 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 11.4 | - | 12.6 | Vdc |
| Line Regulation (TJ = 25°C, 14.5 Vdc ≤ VI ≤ 30 Vdc, IO = 200 mA) | Regline | - | 8.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | Regload | - | - | 25 | mV |
| Input Bias Current (TJ = 25°C) | IIB | - | 3.2 | 6.0 | mA |
| Quiescent Current Change (14.5 Vdc ≤ VI ≤ 30 Vdc, IO = 200 mA) | ΔIIB | - | - | 0.8 | mA |
| 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) | ΔVO/ΔT | - | ±0.2 | mV/°C | |
| Peak Output Current (TJ = 25°C) | IO | - | 700 | mA | |
| Temperature Range | - | 0°C to +125°C | - | - | °C |
| Package | - | DPAK-3, TO-220 | - | - | - |
Key Features
- No External Components Required
- Internal Thermal Overload Protection
- Internal Short Circuit Current Limiting
- Output Transistor Safe-Area Compensation
- High Accuracy (±2%) for MC78M00A models
- Pb-Free Packages Available
Applications
The MC78M12ACTG is suitable for various applications requiring stable and regulated voltage, including:
- Local, on-card voltage regulation
- Low current applications where high accuracy and reliability are crucial
- Automotive and industrial systems requiring robust voltage regulation
- Consumer electronics and embedded systems
Q & A
- What is the maximum output current of the MC78M12ACTG?
The maximum output current, with adequate heatsinking, is 500 mA.
- What are the available output voltages for the MC78M00/MC78M00A Series?
The available output voltages are 5.0 V, 8.0 V, 12 V, and 15 V.
- Does the MC78M12ACTG require external components for operation?
No, the MC78M12ACTG does not require external components for operation.
- What is the temperature range for the MC78M12ACTG?
The temperature range is 0°C to +125°C.
- What type of protection does the MC78M12ACTG have against thermal overload and short circuits?
The device has internal thermal overload protection and internal short circuit current limiting.
- What is the dropout voltage for the MC78M12ACTG?
The dropout voltage is 2.0 Vdc.
- What is the average temperature coefficient of output voltage for the MC78M12ACTG?
The average temperature coefficient of output voltage is ±0.2 mV/°C.
- What is the peak output current for the MC78M12ACTG?
The peak output current is 700 mA.
- What packages are available for the MC78M12ACTG?
The available packages are DPAK-3 and TO-220.
- Is the MC78M12ACTG Pb-Free?
