Overview
The MC79M15CDTG is a negative voltage regulator from ON Semiconductor, part of the MC79M00 series. This device is designed to provide a fixed output voltage of -15 V and is available in a DPAK (TO-252) package. It is a complement to the MC78M00 series and offers robust features such as current limiting, thermal shutdown, and safe-area compensation, making it highly reliable under various operating conditions.
The regulator can deliver output currents up to 500 mA with adequate heatsinking and is suitable for applications requiring stable negative voltage supplies. The MC79M15CDTG is also available in Pb-free packages, making it compliant with environmental regulations.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | VO | -14.4 | -15 | -15.6 | Vdc |
| Line Regulation, TJ = 25°C | Regline | - | - | 80 | mV |
| Load Regulation, TJ = 25°C | Regload | - | - | 240 | mV |
| Input Bias Current (TJ = 25°C) | IIB | - | 4.4 | 8.0 | mA |
| Output Noise Voltage, TA = 25°C, 10 Hz ≤ f ≤ 100 kHz | Vn | - | - | 75 | μV |
| Ripple Rejection (f = 120 Hz) | RR | 54 | 60 | - | dB |
| Dropout Voltage IO = 500 mA, TJ = 25°C | VI−VO | - | - | 1.1 | Vdc |
| Average Temperature Coefficient of Output Voltage | ΔVO/ΔT | - | -0.8 | - | mV/°C |
| Thermal Resistance, Junction-to-Ambient | θJA | - | 92 | - | °C/W |
| Thermal Resistance, Junction-to-Case | θJC | - | 6.0 | - | °C/W |
| Operating Junction Temperature Range | TJ | -40 | - | 125 | °C |
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 (TO-252) package.
- Pb-free packages available.
- ESD protection exceeding Human Body Model 2000 V per MIL-STD-883, Method 3015 and Machine Model 200 V.
- Opposite polarity protection diode and reverse-bias protection diode for enhanced reliability.
Applications
The MC79M15CDTG is suitable for various applications requiring stable negative voltage supplies, including:
- Power supplies and voltage regulators in electronic equipment.
- Audio and video equipment requiring negative voltage rails.
- Industrial control systems and automation.
- Medical devices and equipment.
- Telecommunication systems and networking equipment.
Q & A
- What is the output voltage of the MC79M15CDTG?
The output voltage of the MC79M15CDTG is -15 V.
- What is the maximum output current of the MC79M15CDTG?
The maximum output current is 500 mA with adequate heatsinking.
- What are the key protection features of the MC79M15CDTG?
The device features internal thermal overload protection, short circuit current limiting, and safe-area compensation.
- What package types are available for the MC79M15CDTG?
The device is available in a DPAK (TO-252) package.
- Is the MC79M15CDTG Pb-free?
Yes, Pb-free packages are available.
- What is the operating junction temperature range of the MC79M15CDTG?
The operating junction temperature range is -40°C to 125°C.
- What is the thermal resistance, junction-to-ambient of the MC79M15CDTG in a DPAK package?
The thermal resistance, junction-to-ambient is 92°C/W.
- Does the MC79M15CDTG require external components for operation?
No, the MC79M15CDTG does not require external components for operation.
- What is the ripple rejection of the MC79M15CDTG at 120 Hz?
The ripple rejection at 120 Hz is 54 to 60 dB.
- What is the average temperature coefficient of output voltage for the MC79M15CDTG?
The average temperature coefficient of output voltage is -0.8 mV/°C.
