Overview
The MC78M08ABDTG is a 500 mA positive linear voltage regulator produced by onsemi. It is part of the MC78M00/MC78M00A series, which is similar to the 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 due to internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (TJ = 25°C) | 7.70 - 8.30 | Vdc |
| Output Current (Maximum with adequate heatsinking) | 500 | mA |
| Peak Output Current (TJ = 25°C) | 700 | mA |
| Input Voltage Range | 10.5 - 23 | Vdc |
| Line Regulation (TJ = 25°C, 10.5 Vdc ≤ VI ≤ 23 Vdc, IO = 200 mA) | 6.0 - 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | 20 - 30 | mV |
| 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) | ±0.2 | mV/°C |
| Temperature Range | -40°C to +125°C | |
| Package Type | DPAK-3 |
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 series
- Pb-Free Packages Available
Applications
The MC78M08ABDTG is suitable for various applications requiring local, on-card voltage regulation. These include:
- Industrial control systems
- Consumer electronics
- Automotive systems (with NCV prefix)
- Medical devices
- Telecommunication equipment
Q & A
- What is the maximum output current of the MC78M08ABDTG?
The maximum output current, with adequate heatsinking, is 500 mA.
- What are the key protection features of the MC78M08ABDTG?
The device features internal thermal overload protection, internal short circuit current limiting, and output transistor safe-area compensation.
- What is the typical output voltage range for the MC78M08ABDTG?
The output voltage range is typically between 7.70 V and 8.30 V at TJ = 25°C.
- What is the input voltage range for the MC78M08ABDTG?
The input voltage range is from 10.5 Vdc to 23 Vdc.
- Does the MC78M08ABDTG require external components for operation?
No, the MC78M08ABDTG does not require external components for operation.
- What is the temperature range for the MC78M08ABDTG?
The operating temperature range is from -40°C to +125°C.
- What package types are available for the MC78M08ABDTG?
The MC78M08ABDTG is available in DPAK-3 and TO-220 packages.
- What is the dropout voltage for the MC78M08ABDTG?
The dropout voltage is 2.0 Vdc at TJ = 25°C.
- Is the MC78M08ABDTG suitable for automotive applications?
Yes, with the NCV prefix, it is suitable for automotive and other applications requiring specific certifications.
- What is the average temperature coefficient of output voltage for the MC78M08ABDTG?
The average temperature coefficient of output voltage is ±0.2 mV/°C at IO = 5.0 mA.
