Overview
The MC78M05ACDT is a 500 mA positive voltage regulator from onsemi, part of the MC78M00/MC78M00A Series. These regulators are designed for local, on-card voltage regulation and are similar to the popular MC7800 Series devices but with half the output current. They are known for their ruggedness and reliability under various operating conditions, thanks to internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor.
Key Specifications
| Characteristics | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 4.8 | 5.0 | 5.2 | Vdc |
| Output Voltage Variation (7.0 Vdc ≤ VI ≤ 20 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | 4.8 | - | 5.2 | Vdc |
| Line Regulation (TJ = 25°C, 8.0 Vdc ≤ VI ≤ 25 Vdc, IO = 200 mA) | - | 5.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | - | - | 20 | mV |
| Dropout Voltage (TJ = 25°C) | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | - | 350 | - | mA |
| Peak Output Current (TJ = 25°C) | - | 700 | - | mA |
| Input Voltage (Max) | - | - | 35 | V |
| Output Current | - | - | 500 | mA |
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)
- ESD Protection: Human Body Model 2000 V per MIL-STD-883, Method 3015; Machine Model Method 200 V
- NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable
Applications
The MC78M05ACDT is suitable for various applications requiring stable and regulated voltage, including:
- Local, on-card voltage regulation in electronic devices
- Automotive systems (with NCV prefix)
- Industrial control systems
- Consumer electronics
- Telecommunication equipment
Q & A
- What is the maximum output current of the MC78M05ACDT? The maximum output current is 500 mA with adequate heatsinking.
- What are the output voltage options for the MC78M00 series? The series is available for 5.0 V, 8.0 V, 12 V, and 15 V.
- Does the MC78M05ACDT require external components? No, it does not require external components.
- What is the dropout voltage for the MC78M05ACDT? The dropout voltage is 2.0 V.
- Is the MC78M05ACDT protected against short circuits? Yes, it has internal short circuit current limiting.
- What is the maximum input voltage for the MC78M05ACDT? The maximum input voltage is 35 V.
- Does the MC78M05ACDT have thermal protection? Yes, it has internal thermal overload protection.
- Is the MC78M05ACDT suitable for automotive applications? Yes, with the NCV prefix, it is AEC-Q100 qualified and PPAP capable.
- What is the peak output current of the MC78M05ACDT? The peak output current is 700 mA.
- What is the line regulation of the MC78M05ACDT? The line regulation is 5.0 to 50 mV.
