Overview
The MC78M09CDTRK is a 500 mA positive voltage regulator from ON Semiconductor, part of the MC78M00/MC78M00A Series. These regulators are similar 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 ruggedness under various operating conditions. The MC78M09CDTRK specifically provides a regulated output voltage of 9 volts.
Key Specifications
| Characteristics | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | 8.64 | 9.0 | 9.45 | Vdc |
| Output Voltage Variation (11.5 Vdc ≤ VI ≤ 23 Vdc, 5.0 mA ≤ IO ≤ 350 mA) | 8.55 | - | 9.45 | Vdc |
| Line Regulation (TJ = 25°C, 11.5 Vdc ≤ VI ≤ 25 Vdc, IO = 200 mA) | - | 6.0 | 50 | mV |
| Load Regulation (TJ = 25°C, 5.0 mA ≤ IO ≤ 500 mA) | - | - | 25 | mV |
| Peak Output Current (TJ = 25°C) | - | - | 700 | mA |
| Average Temperature Coefficient of Output Voltage (IO = 5.0 mA) | - | ±0.3 | - | mV/°C |
| Dropout Voltage (TJ = 25°C) | - | 2.0 | - | Vdc |
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)
- ESD Protection (exceeds Human Body Model 2000 V per MIL-STD-883, Method 3015)
Applications
The MC78M09CDTRK is suitable for various applications requiring stable and regulated voltage, including:
- Local, on-card voltage regulation
- Automotive and industrial systems (especially models with the NCV prefix)
- Consumer electronics requiring reliable voltage regulation
- Medical devices needing stable power supply
Q & A
- What is the output voltage of the MC78M09CDTRK? The output voltage is 9 volts, with a range of 8.64 to 9.45 Vdc at TJ = 25°C.
- What is the maximum output current of the MC78M09CDTRK? The maximum output current is 500 mA, with a peak output current of up to 700 mA at TJ = 25°C.
- Does the MC78M09CDTRK require external components? No, the MC78M09CDTRK does not require external components for operation.
- What kind of protection does the MC78M09CDTRK have? It has internal thermal overload protection, internal short circuit current limiting, and output transistor safe-area compensation.
- Is the MC78M09CDTRK ESD protected? Yes, it exceeds the Human Body Model 2000 V per MIL-STD-883, Method 3015.
- What is the dropout voltage of the MC78M09CDTRK? The dropout voltage is 2.0 Vdc at TJ = 25°C.
- What are the typical applications of the MC78M09CDTRK? It is used in local, on-card voltage regulation, automotive and industrial systems, consumer electronics, and medical devices.
- How accurate is the output voltage of the MC78M09CDTRK? The output voltage accuracy is ±2% for MC78M00A models.
- What is the average temperature coefficient of output voltage? The average temperature coefficient of output voltage is ±0.3 mV/°C at IO = 5.0 mA.
- What is the line regulation of the MC78M09CDTRK? The line regulation is 6.0 to 50 mV at TJ = 25°C, with VI ranging from 11.5 Vdc to 25 Vdc and IO = 200 mA.
