Overview
The MC79L12ABDR2G is a fixed negative-voltage linear regulator produced by onsemi. This device is part of the MC79L00AB series and is designed to provide a regulated -12V output with a maximum current of 100mA. It is packaged in an SOIC-8 surface mount format, making it suitable for a wide range of applications requiring a stable negative voltage supply.
This regulator is known for its simplicity and robustness, featuring internal current-limiting and thermal-shutdown mechanisms that protect it from overload conditions. It offers significant improvements over traditional Zener-diode and resistor combinations, including better output impedance and lower bias current.
Key Specifications
| Parameter | Description |
|---|---|
| Input Voltage (Max) | -35V |
| Output Voltage (Fixed) | -12V |
| Dropout Voltage (Max) | 1.7V @ 40mA |
| Output Current (Max) | 100mA |
| Package Style | SOIC-8 |
| Mounting Method | Surface Mount |
| Operating Temperature | -40°C to +125°C |
| Power Supply Rejection Ratio (PSRR) | 42dB @ 120Hz |
Key Features
- Internal Current Limiting and Thermal Shutdown: Protects the regulator from overload conditions, ensuring robust operation.
- No External Components Required: Simplifies the design and reduces the need for additional components in most applications.
- Low Dropout Voltage: 1.7V at 40mA, which is beneficial for applications where input voltage is close to the output voltage.
- High Power Supply Rejection Ratio (PSRR): 42dB at 120Hz, indicating good noise rejection.
- Compact SOIC-8 Package: Suitable for surface mount applications, saving board space.
Applications
- Power Management: Ideal for systems requiring a regulated negative voltage supply.
- Industrial Applications: Suitable for various industrial environments due to its robust design and wide operating temperature range.
- On-Card Regulation: Useful for providing a regulated negative voltage on the same card, eliminating the need for external voltage regulation modules.
Q & A
- What is the nominal output voltage of the MC79L12ABDR2G?
The nominal output voltage is -12V.
- What is the maximum output current of the MC79L12ABDR2G?
The maximum output current is 100mA.
- What is the maximum input voltage for the MC79L12ABDR2G?
The maximum input voltage is -35V.
- Does the MC79L12ABDR2G require external components for operation?
No, in most applications, no external components are required.
- What are the key protection features of the MC79L12ABDR2G?
The device features internal current limiting and thermal shutdown.
- What is the operating temperature range of the MC79L12ABDR2G?
The operating temperature range is -40°C to +125°C.
- What is the package style of the MC79L12ABDR2G?
The package style is SOIC-8.
- What is the dropout voltage of the MC79L12ABDR2G at 40mA?
The dropout voltage is 1.7V at 40mA.
- What is the Power Supply Rejection Ratio (PSRR) of the MC79L12ABDR2G?
The PSRR is 42dB at 120Hz.
- Is the MC79L12ABDR2G RoHS compliant?
Yes, the MC79L12ABDR2G is RoHS compliant.
