Overview
The MC79M12CDTG is a fixed output negative voltage regulator from Onsemi, designed to provide a stable output voltage of -12V with a maximum output current of 0.5A. This regulator is part of the MC79M00 series, which complements the MC78M00 series devices. It is available in both TO-220 and DPAK packages, with the MC79M12CDTG specifically being in the DPAK package and is Pb-free, making it suitable for a wide range of applications where negative voltage regulation is required.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | -11.5 | -12 | -12.5 | Vdc |
| Input Voltage | -35 | Vdc | ||
| Output Current | 0.5 | A | ||
| Line Regulation (TJ = 25°C) | 80 | mV | ||
| Load Regulation (TJ = 25°C) | 240 | mV | ||
| Dropout Voltage (IO = 500 mA, TJ = 25°C) | 1.1 | Vdc | ||
| Operating Junction Temperature Range | -40 | 125 | °C | |
| Thermal Resistance, Junction-to-Ambient (DPAK) | 92 | °C/W | ||
| Thermal Resistance, Junction-to-Case (DPAK) | 6.0 | °C/W |
Key Features
- No external components required for operation.
- Internal thermal overload protection and short circuit current limiting.
- Output transistor safe-area compensation.
- Available in surface mount DPAK (DT) package.
- Pb-free packages available.
- ESD protection exceeding Human Body Model 2000 V per MIL_STD_883, Method 3015 and Machine Model 200 V.
- High ripple rejection (54 dB at 120 Hz).
- Low output noise voltage.
- Protection diodes can be added to prevent capacitor discharge and output polarity reversals.
Applications
The MC79M12CDTG is suitable for various applications requiring stable negative voltage regulation, such as:
- Power supplies and voltage regulators in electronic equipment.
- Audio and video equipment where negative voltage is necessary.
- Industrial control systems and automation.
- Medical devices requiring stable negative voltage.
- Telecommunication equipment.
Q & A
- What is the output voltage of the MC79M12CDTG?
The output voltage of the MC79M12CDTG is -12V.
- What is the maximum output current of the MC79M12CDTG?
The maximum output current is 0.5A.
- What are the package options for the MC79M12CDTG?
The MC79M12CDTG is available in the DPAK package.
- Does the MC79M12CDTG require external components for operation?
No, the MC79M12CDTG does not require external components for operation.
- What is the operating junction temperature range for the MC79M12CDTG?
The operating junction temperature range is -40°C to +125°C.
- Does the MC79M12CDTG have thermal protection features?
Yes, it has internal thermal overload protection and short circuit current limiting.
- What is the thermal resistance, junction-to-ambient for the DPAK package?
The thermal resistance, junction-to-ambient for the DPAK package is 92°C/W.
- Is the MC79M12CDTG Pb-free?
Yes, the MC79M12CDTG is Pb-free.
- What is the ripple rejection of the MC79M12CDTG at 120 Hz?
The ripple rejection at 120 Hz is 54 dB.
- Can protection diodes be added to the MC79M12CDTG?
Yes, protection diodes can be added to prevent capacitor discharge and output polarity reversals.
