Overview
The MC78M09CDTG is a part of the MC78M00/MC78M00A Series of positive linear voltage regulators produced by onsemi. These regulators are identical to the popular MC7800 Series devices but are specified for only half the output current, which is 500 mA. They are designed for local, on-card voltage regulation and are known for their ruggedness under most operating conditions due to internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor.
Key Specifications
| Characteristic | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 8.64 | 9.0 | 9.45 | Vdc |
| Output Voltage Variation (11.5 Vdc ≤ VI ≤ 23 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | 8.55 | - | 9.45 | Vdc |
| Line Regulation (TJ = 25°C, 11.5 Vdc ≤ VI ≤ 25 Vdc, IO = 200 mA) | - | 6.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | - | - | 25 | mV |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | - | ±0.2 | - | mV/°C |
| Peak Output Current (TJ = 25°C) | - | - | 700 | mA |
| Output Current | - | - | 500 | mA |
| Package | - | - | DPAK-3 | - |
| Temperature Range | -40°C | - | 125°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 models
- Pb-Free Packages Available
Applications
The MC78M09CDTG is suitable for various applications requiring stable and regulated voltage, including:
- Local, on-card voltage regulation in electronic devices
- Automotive systems (NCV prefix models)
- Industrial control systems
- Consumer electronics
- Medical devices requiring stable voltage supply
Q & A
- What is the maximum output current of the MC78M09CDTG?
The maximum output current is 500 mA with adequate heatsinking.
- What are the key features of the MC78M09CDTG?
Key features include no external components required, internal thermal overload protection, internal short circuit current limiting, and output transistor safe-area compensation.
- What is the output voltage of the MC78M09CDTG?
The output voltage is 9.0 V with a tolerance of ±0.45 V (8.64 V to 9.45 V).
- What is the temperature range for the MC78M09CDTG?
The temperature range is -40°C to +125°C.
- What package types are available for the MC78M09CDTG?
The MC78M09CDTG is available in DPAK-3 packages.
- Does the MC78M09CDTG require external components for operation?
No, the MC78M09CDTG does not require external components for operation.
- What is the line regulation of the MC78M09CDTG?
The line regulation is 6.0 mV (typical) with a maximum of 50 mV.
- What is the load regulation of the MC78M09CDTG?
The load regulation is 25 mV (maximum) for 5.0 mA ≤ IO ≤ 500 mA.
- Is the MC78M09CDTG suitable for automotive applications?
Yes, models with the NCV prefix are suitable for automotive and other applications requiring high reliability.
- What is the average temperature coefficient of output voltage for the MC78M09CDTG?
The average temperature coefficient of output voltage is ±0.2 mV/°C.
