Overview
The MC79L12ACDR2 is a negative linear voltage regulator from onsemi, part of the MC79L00A Series. This regulator is designed to provide a regulated negative voltage output with a maximum current of 100 mA. It is known for its ease of use, low cost, and robust features such as internal short circuit current limiting and thermal overload protection. The MC79L12ACDR2 is suitable for various applications requiring a stable negative voltage supply, making it a versatile component in electronic design.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = +25°C) | -11.5 | -12 | -12.5 | Vdc |
| Input Regulation (TJ = +25°C) | -14.5 Vdc ≥ VI ≥ -27 Vdc | -16 Vdc ≥ VI ≥ -27 Vdc | - | - |
| Load Regulation (TJ = +25°C, 1.0 mA ≤ IO ≤ 100 mA) | - | 100 | - | mV |
| Input Bias Current (TJ = +25°C) | - | 6.5 | - | mA |
| Dropout Voltage (IO = 40 mA, TJ = +25°C) | - | 1.7 | - | Vdc |
| Ripple Rejection (−15 ≤ VI ≤ −25 Vdc, f = 120 Hz, TJ = +25°C) | 37 | 42 | - | dB |
| Operating Temperature Range | 0°C | - | 125°C | - |
| Package | - | SOIC-8 (Pb-Free) | - | - |
Key Features
- No external components required for operation.
- Internal short circuit current limiting and thermal overload protection.
- Low cost and Pb-Free packages available.
- Complementary positive regulators offered (MC78L00 Series).
- High ripple rejection and low output noise voltage.
Applications
The MC79L12ACDR2 is suitable for a wide range of applications, including:
- On-card regulation.
- Any application requiring a regulated negative voltage at a modest current level.
- Replacement for Zener-diode and resistor combinations to improve output impedance.
- Industrial and commercial electronic systems where stable negative voltage supplies are necessary.
Q & A
- What is the maximum output current of the MC79L12ACDR2?
The maximum output current is 100 mA. - What are the typical output voltage values for the MC79L12ACDR2?
The typical output voltage is -12 Vdc. - What is the operating temperature range for the MC79L12ACDR2?
The operating temperature range is from 0°C to +125°C. - Does the MC79L12ACDR2 require external components for operation?
No, it does not require external components for operation. - What type of protection does the MC79L12ACDR2 have?
The MC79L12ACDR2 has internal short circuit current limiting and thermal overload protection. - What is the dropout voltage for the MC79L12ACDR2 at 40 mA output current?
The dropout voltage is 1.7 Vdc. - What is the ripple rejection of the MC79L12ACDR2?
The ripple rejection is typically 42 dB. - What packages are available for the MC79L12ACDR2?
The MC79L12ACDR2 is available in SOIC-8 (Pb-Free) packages. - Is the MC79L12ACDR2 Pb-Free?
- What are some common applications for the MC79L12ACDR2?
Common applications include on-card regulation, replacement for Zener-diode and resistor combinations, and industrial and commercial electronic systems. - What are some common applications for the MC79L12ACDR2?
