Overview
The MC7912CT is a 3-terminal negative voltage regulator produced by Fairchild Semiconductor, now part of ON Semiconductor. This component is designed to provide a stable negative output voltage and is widely used in various electronic systems that require reliable voltage regulation. The MC7912CT is part of the 79XX series, which includes other voltage regulators with different output voltages.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | Vout | -11.50 | -12.0 | -12.50 | V |
| Input Voltage | Vi | -14.5 | -27 | V | |
| Output Current | Io | 1.0 | A | ||
| Quiescent Current | Iq | 2.0 | 3.0 | mA | |
| Output Noise Voltage | VN | 300 | μV | ||
| Ripple Rejection | RR | 54 | 60 | dB | |
| Dropout Voltage | Vd | 1.1 | V | ||
| Peak Output Current | Iopeak | 2.1 | A | ||
| Temperature Coefficient of Output Voltage | △Vo/△Tj | -0.8 | mV/°C | ||
| Operating Junction Temperature | Tj | 0 | 125 | ℃ | |
| Storage Temperature Range | Tstg | -55 | 150 | ℃ |
Key Features
- Internal Thermal Shut Down Protection: Protects the device from overheating.
- Internal Short Circuit Current Limiting: Limits the current in case of a short circuit.
- Epoxy Meets UL 94 V-0 Flammability Rating: Ensures the device meets safety standards for flammability.
- Halogen Free Available: Can be ordered with a halogen-free suffix (-HF).
- Lead Free Finish/RoHS Compliant: Compliant with RoHS regulations, indicated by the 'P' suffix.
Applications
The MC7912CT is suitable for a variety of applications where a stable negative voltage is required. These include:
- Power supplies and voltage regulators in electronic equipment.
- Audio and video equipment requiring stable negative voltages.
- Industrial control systems and automation.
- Medical devices and equipment.
- Telecommunication systems.
Q & A
- What is the output voltage of the MC7912CT?
The output voltage of the MC7912CT is typically -12.0V, with a range of -11.50V to -12.50V. - What is the maximum output current of the MC7912CT?
The maximum output current is 1.0A. - What is the quiescent current of the MC7912CT?
The quiescent current is typically 2.0mA, with a maximum of 3.0mA. - What is the ripple rejection of the MC7912CT?
The ripple rejection is between 54dB and 60dB. - Does the MC7912CT have thermal protection?
Yes, it has internal thermal shut down protection. - Is the MC7912CT RoHS compliant?
Yes, it is RoHS compliant and has a lead-free finish. - What is the operating junction temperature range of the MC7912CT?
The operating junction temperature range is from 0°C to 125°C. - What is the storage temperature range of the MC7912CT?
The storage temperature range is from -55°C to 150°C. - Is the MC7912CT available in a halogen-free version?
Yes, it can be ordered with a halogen-free suffix (-HF). - What is the dropout voltage of the MC7912CT?
The dropout voltage is typically 1.1V.
