Overview
The MC78M05BTG 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 MC7800 series but with half the output current. They feature internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, making them robust under various operating conditions.
Key Specifications
| Characteristics | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 4.8 | 5.0 | 5.2 | Vdc |
| Output Voltage Variation (7.0 Vdc ≤ VI ≤ 20 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 4.9 | - | 5.1 | Vdc |
| Input Voltage | VI | 5.0 | - | 35 | Vdc |
| Power Dissipation (Package Limitation) | PD | Internally Limited | - | - | - |
| Thermal Resistance, Junction-to-Air | θJA | - | 70 | - | °C/W |
| Operating Junction Temperature Range | TJ | - | - | +150 | °C |
| Storage Temperature Range | Tstg | -65 | - | +150 | °C |
| Dropout Voltage (TJ = 25°C) | VI-VO | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | IOS | - | 350 | - | mA |
| Peak Output Current (TJ = 25°C) | IO | - | 700 | - | 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 and Machine Model 200 V
Applications
The MC78M05BTG is suitable for various applications requiring stable voltage regulation, including:
- Local, on-card voltage regulation
- Automotive and industrial systems (NCV prefix models)
- Low current power supplies
- Embedded systems and IoT devices
- Consumer electronics requiring reliable voltage regulation
Q & A
- What is the maximum output current of the MC78M05BTG?
The maximum output current is 500 mA with adequate heatsinking.
- What is the output voltage range for the MC78M05BTG?
The output voltage range is 4.8 V to 5.2 V.
- Does the MC78M05BTG require external components for operation?
No, the MC78M05BTG does not require external components for operation.
- What kind of protection does the MC78M05BTG have?
The MC78M05BTG has internal thermal overload protection and internal short circuit current limiting.
- What is the dropout voltage for the MC78M05BTG?
The dropout voltage is 2.0 V.
- What is the short circuit current limit for the MC78M05BTG?
The short circuit current limit is 350 mA at VI = 35 V.
- What is the peak output current for the MC78M05BTG?
The peak output current is 700 mA at TJ = 25°C.
- What is the operating junction temperature range for the MC78M05BTG?
The operating junction temperature range is up to +150°C.
- Does the MC78M05BTG have ESD protection?
- What are some common applications for the MC78M05BTG?
