Overview
The MC78M15CTG is a 500 mA positive voltage regulator from onsemi, part of the MC78M00 series. This three-terminal regulator is designed for local, on-card voltage regulation and is similar to the MC7800 series but with half the output current. It features internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor, making it robust under various operating conditions.
Key Specifications
| Characteristic | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 14.4 | 14.7 | 15 | Vdc |
| Output Voltage Variation (17.5 Vdc ≤ VI ≤ 30 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 14.25 | - | 15.75 | Vdc |
| Input Voltage | VI | - | - | 35 | Vdc |
| Power Dissipation (Package Limitation) | PD | - | - | Internally Limited | - |
| Thermal Resistance, Junction-to-Air | θJA | - | - | 70 | °C/W |
| Operating Junction Temperature Range | TJ | -40 | - | +125 | °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
- Available in various output voltages: 5.0 V, 8.0 V, 12 V, and 15 V
- NCV prefix available for automotive and other applications requiring high reliability
Applications
The MC78M15CTG is suitable for a variety of applications requiring stable voltage regulation, 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 MC78M15CTG?
The maximum output current of the MC78M15CTG is 500 mA with adequate heatsinking.
- What are the key protection features of the MC78M15CTG?
The device features internal thermal overload protection, internal short circuit current limiting, and output transistor safe-area compensation.
- What is the dropout voltage of the MC78M15CTG?
The dropout voltage of the MC78M15CTG is 2.0 Vdc at TJ = 25°C.
- What is the operating junction temperature range of the MC78M15CTG?
The operating junction temperature range is from -40°C to +125°C.
- Does the MC78M15CTG require external components for operation?
No, the MC78M15CTG does not require external components for operation.
- What is the peak output current of the MC78M15CTG?
The peak output current of the MC78M15CTG is 700 mA at TJ = 25°C.
- What is the thermal resistance, junction-to-air, of the MC78M15CTG?
The thermal resistance, junction-to-air, is 70°C/W.
- What are the storage temperature limits for the MC78M15CTG?
The storage temperature range is from -65°C to +150°C.
- Is the MC78M15CTG suitable for automotive applications?
Yes, the NCV prefix version is suitable for automotive and other high-reliability applications.
- What is the average temperature coefficient of output voltage for the MC78M15CTG?
The average temperature coefficient of output voltage is ±0.3 mV/°C.
