Overview
The MC78M05BDTG is a 500 mA positive linear voltage regulator produced by onsemi. It is part of the MC78M00/MC78M00A series, which is identical to the popular MC7800 Series devices but specified for only half the output current. These three-terminal regulators are designed for local, on-card voltage regulation and are known for their ruggedness under most operating conditions.
The device features internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, ensuring reliable operation. The MC78M05BDTG is available in Pb-Free packages and offers high accuracy with a tolerance of +/-4% for the MC78M05B variants.
Key Specifications
| Parameter | 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 |
| Maximum Output Current | - | 500 | - | mA |
| Peak Output Current (TJ = 25°C) | - | 700 | - | mA |
| Input Voltage Range | 7.0 | - | 35 | Vdc |
| Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | DPAK-3 | - |
| PSRR (Power Supply Rejection Ratio) at 120Hz | - | - | 80 | dB |
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 variants, ±4% for MC78M05B variants)
- Pb-Free Packages Available
- ESD Protection: Human Body Model 2000 V per MIL-STD-883, Method 3015; Machine Model 200 V
Applications
The MC78M05BDTG is suitable for various applications requiring stable and regulated voltage, including:
- Local, on-card voltage regulation
- Industrial control systems
- Automotive systems (NCV prefix variants)
- Consumer electronics
- Medical devices
Q & A
- What is the maximum output current of the MC78M05BDTG?
The maximum output current of the MC78M05BDTG is 500 mA with adequate heatsinking.
- What is the output voltage of the MC78M05BDTG?
The output voltage of the MC78M05BDTG is 5 V.
- What is the input voltage range for the MC78M05BDTG?
The input voltage range for the MC78M05BDTG is from 7.0 Vdc to 35 Vdc.
- Does the MC78M05BDTG require external components?
No, the MC78M05BDTG does not require external components.
- What is the temperature range for the MC78M05BDTG?
The temperature range for the MC78M05BDTG is from -40°C to +125°C.
- What type of package is the MC78M05BDTG available in?
The MC78M05BDTG is available in a DPAK-3 package.
- Does the MC78M05BDTG have ESD protection?
- What is the PSRR (Power Supply Rejection Ratio) of the MC78M05BDTG at 120Hz?
The PSRR of the MC78M05BDTG at 120Hz is 80 dB.
- Is the MC78M05BDTG Pb-Free?
- What are some common applications for the MC78M05BDTG?
The MC78M05BDTG is commonly used in industrial control systems, automotive systems, consumer electronics, and medical devices.
