Overview
The MC78M09BDTRK is a 500 mA positive voltage regulator from ON Semiconductor, part of the MC78M00 series. This three-terminal regulator is designed for local, on-card voltage regulation and is identical to the popular MC7800 series devices but specified for half the output current. It is available in various voltage options, including the 9V version in the MC78M09BDTRK model.
The device is known for its robustness and reliability, featuring internal current limiting, thermal shutdown circuitry, and safe-area compensation for the internal pass transistor. These features make it remarkably rugged under most operating conditions.
Key Specifications
| Characteristics | Symbol | Min | Max | Unit | |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | 8.64 | 9.0 | 9.45 | Vdc |
| Output Voltage Variation (11.5 Vdc ≤ VI ≤ 23 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | VO | 8.55 | - | 9.45 | Vdc |
| Line Regulation (TJ = 25°C, 11.5 Vdc ≤ VI ≤ 25 Vdc, IO = 200 mA) | Regline | - | 6.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | Regload | - | - | 30 | mV |
| Dropout Voltage (TJ = 25°C) | VI−VO | - | 2.0 | - | Vdc |
| Short Circuit Current Limit (TJ = 25°C, VI = 35 V) | IOS | - | 350 | - | mA |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | ΔVO/ΔT | - | ±0.2 | - | mV/°C |
| 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 models
- NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC-Q100 Qualified and PPAP Capable
Applications
The MC78M09BDTRK is suitable for a variety of applications requiring stable and regulated voltage supply. These include:
- Local, on-card voltage regulation in electronic devices
- Automotive systems requiring AEC-Q100 qualification
- Industrial control systems
- Consumer electronics
- Medical devices requiring reliable voltage regulation
Q & A
- What is the maximum output current of the MC78M09BDTRK?
The maximum output current, with adequate heatsinking, is 500 mA.
- What are the key features of the MC78M09BDTRK?
The key features include no external components required, internal thermal overload protection, internal short circuit current limiting, and output transistor safe-area compensation.
- What is the output voltage of the MC78M09BDTRK?
The output voltage is 9.0 V, with a range of 8.64 V to 9.45 V at 25°C.
- What is the dropout voltage of the MC78M09BDTRK?
The dropout voltage is 2.0 V at 25°C.
- Is the MC78M09BDTRK suitable for automotive applications?
Yes, the NCV prefix models are AEC-Q100 qualified and PPAP capable, making them suitable for automotive and other applications requiring unique site and control change requirements.
- What is the average temperature coefficient of output voltage?
The average temperature coefficient of output voltage is ±0.2 mV/°C at an output current of 5.0 mA.
- What is the peak output current of the MC78M09BDTRK?
The peak output current is 700 mA at 25°C.
- Does the MC78M09BDTRK require external components?
No, the MC78M09BDTRK does not require external components.
- What is the line regulation of the MC78M09BDTRK?
The line regulation is 6.0 mV to 50 mV at 25°C, with an input voltage range of 11.5 Vdc to 25 Vdc and an output current of 200 mA.
- What is the load regulation of the MC78M09BDTRK?
The load regulation is up to 30 mV for an output current range of 5.0 mA to 500 mA at 25°C.
