Overview
The MC78M05ABT is a 3-terminal positive linear voltage regulator from onsemi, part of the MC78M00/MC78M00A series. These regulators are identical to the popular MC7800 series but are specified for half the output current. They are designed for local, on-card voltage regulation and are known for their robustness under various operating conditions.
The MC78M05ABT provides an output voltage of 5 V with a maximum output current of 500 mA, provided adequate heatsinking is used. This device features internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, making it highly reliable.
Key Specifications
| Parameter | Min | 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) | - | - | 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 |
| Minimum Operating Temperature | -40 | - | - | °C |
| Maximum Operating Temperature | - | - | 125 | °C |
| Maximum Input Voltage | - | - | 35 | Vdc |
| Package Type | - | - | D-PAK, TO-220 | - |
| Pin Count | - | - | 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 models
- Pb-Free Packages Available
- ESD Protection: Human Body Model 2000 V per MIL-STD-883, Method 3015; Machine Model Method 200 V
Applications
The MC78M05ABT is suitable for a variety of applications requiring stable and regulated voltage supply. These include:
- Local, on-card voltage regulation
- Industrial control systems
- Consumer electronics
- Automotive systems (NCV prefix models)
- General-purpose voltage regulation in electronic devices
Q & A
- What is the maximum output current of the MC78M05ABT?
The maximum output current of the MC78M05ABT is 500 mA, provided adequate heatsinking is used.
- What is the output voltage of the MC78M05ABT?
The output voltage of the MC78M05ABT is 5 V.
- What are the key protection features of the MC78M05ABT?
The key protection features include internal thermal overload protection, internal short circuit current limiting, and output transistor safe-area compensation.
- What is the operating temperature range of the MC78M05ABT?
The operating temperature range is from -40°C to +125°C.
- What is the maximum input voltage for the MC78M05ABT?
The maximum input voltage is 35 Vdc.
- Does the MC78M05ABT require external components for operation?
No, the MC78M05ABT does not require external components for operation.
- What are the available package types for the MC78M05ABT?
The available package types are D-PAK and TO-220.
- Is the MC78M05ABT ESD protected?
Yes, the MC78M05ABT has ESD protection exceeding Human Body Model 2000 V per MIL-STD-883, Method 3015, and Machine Model Method 200 V.
- What is the accuracy of the MC78M05ABT?
The MC78M05ABT has an accuracy of ±2% for the MC78M00A models.
- Are Pb-Free packages available for the MC78M05ABT?
Yes, Pb-Free packages are available for the MC78M05ABT.
