Overview
The MC79M08BDTG is a negative linear voltage regulator from onsemi, designed as part of the MC79M00 series. This regulator is available in a fixed output voltage of -8.0 V and is intended as a complement to the popular MC78M00 series devices. It features internal current limiting, thermal shutdown, and safe-area compensation, making it robust under various operating conditions. With adequate heatsinking, it can deliver output currents exceeding 0.5 A.
Key Specifications
| Characteristic | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = 25°C) | -7.7 | -8.0 | -8.3 | Vdc |
| Line Regulation, TJ = 25°C | - | - | 5.0 | mV |
| Load Regulation, TJ = 25°C | - | - | 30 | mV |
| Input Bias Current (TJ = 25°C) | - | 4.3 | 8.0 | mA |
| Output Noise Voltage, TA = 25°C, 10 Hz ≤ f ≤ 100 kHz | - | - | 40 | µV |
| Ripple Rejection (f = 120 Hz) | 54 | 66 | - | dB |
| Dropout Voltage IO = 500 mA, TJ = 25°C | - | - | 1.1 | Vdc |
| Operating Temperature Range | -40°C | - | 125°C | - |
| Package | - | - | DPAK-3 | - |
Key Features
The MC79M08BDTG features several key attributes that make it a reliable and efficient choice for various applications:
- No External Components Required: The regulator does not need additional external components to function.
- Internal Thermal Overload Protection: It includes thermal shutdown to protect against overheating.
- Internal Short Circuit Current Limiting: This feature prevents damage from short circuits.
- Output Transistor Safe-Area Compensation: Ensures the output transistor operates within safe limits.
- Pb-Free Packages Available: The device is available in lead-free packages, making it compliant with environmental regulations.
- Surface Mount DPAK (DT) Package: Available in surface mount packages for easier integration into modern PCB designs.
Applications
The MC79M08BDTG is suitable for a variety of applications where a stable negative voltage supply is required:
- Industrial Control Systems: For powering components in industrial control systems that require a negative voltage supply.
- Telecommunications: In telecommunications equipment where negative voltage regulation is necessary.
- Medical Devices: For medical devices that require stable and regulated negative voltage supplies.
- Aerospace and Defense: In aerospace and defense applications where reliability and stability are critical.
Q & A
- What is the output voltage of the MC79M08BDTG?
The output voltage of the MC79M08BDTG is -8.0 V.
- What is the maximum output current of the MC79M08BDTG?
The maximum output current is 500 mA.
- What are the key protection features of the MC79M08BDTG?
The device includes internal thermal overload protection, short circuit current limiting, and safe-area compensation.
- What is the operating temperature range of the MC79M08BDTG?
The operating temperature range is from -40°C to +125°C.
- Is the MC79M08BDTG available in Pb-free packages?
- What package types are available for the MC79M08BDTG?
The device is available in DPAK-3 and TO-220 packages.
- Does the MC79M08BDTG require external components to function?
No, the regulator does not require external components to function.
- What is the dropout voltage of the MC79M08BDTG at 500 mA output current?
The dropout voltage is 1.1 Vdc.
- What is the ripple rejection of the MC79M08BDTG at 120 Hz?
The ripple rejection is 54 to 66 dB.
- What is the typical output noise voltage of the MC79M08BDTG?
The typical output noise voltage is 40 µV.
