Overview
The MC78M08CDTRK is a 500 mA positive voltage regulator from ON Semiconductor, part of the MC78M00/MC78M00A series. These regulators are designed for local, on-card voltage regulation and are similar to the popular MC7800 series but with half the output current. They are known for their robustness and reliability, featuring 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 | 7.84 | 8.30 | Vdc |
| Output Voltage Variation (10.5 Vdc ≤ VI ≤ 23 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 7.6 | - | 8.4 | Vdc |
| Line Regulation (TJ = 25°C, 10.5 Vdc ≤ VI ≤ 25 Vdc, IO = 200 mA) | Regline | - | 6.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | Regload | - | - | 25 | 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) | ΔVO/ΔT | - | ±0.2 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | IO | - | 700 | - | mA |
| Temperature Range | - | -40°C to +125°C | - | - | °C |
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)
- AEC-Q100 Qualified and PPAP Capable for Automotive and Other Applications Requiring Unique Site and Control Change Requirements
Applications
The MC78M08CDTRK is suitable for a variety of applications requiring local, on-card voltage regulation. These include:
- Industrial Control Systems
- Consumer Electronics
- Automotive Systems (with NCV prefix models)
- Medical Devices
- Telecommunication Equipment
Q & A
- What is the maximum output current of the MC78M08CDTRK?
The maximum output current is 500 mA with adequate heatsinking.
- What are the output voltage ranges for the MC78M08CDTRK?
The output voltage ranges from 7.70 V to 8.30 V at TJ = 25°C.
- Does the MC78M08CDTRK require external components?
No, the MC78M08CDTRK does not require any external components.
- What is the dropout voltage for the MC78M08CDTRK?
The dropout voltage is 2.0 Vdc at TJ = 25°C.
- What is the short circuit current limit for the MC78M08CDTRK?
The short circuit current limit is 350 mA at TJ = 25°C and VI = 35 V.
- What is the temperature range for the MC78M08CDTRK?
The temperature range is from -40°C to +125°C.
- Does the MC78M08CDTRK have thermal overload protection?
- Is the MC78M08CDTRK suitable for automotive applications?
- What is the average temperature coefficient of output voltage for the MC78M08CDTRK?
The average temperature coefficient of output voltage is ±0.2 mV/°C at IO = 5.0 mA.
- What is the peak output current for the MC78M08CDTRK?
The peak output current is 700 mA at TJ = 25°C.
