Overview
The MC79L12ACPG is a negative linear voltage regulator from onsemi, designed to provide a regulated negative voltage output with a current capability of up to 100 mA. This regulator is part of the MC79L00A Series, known for its ease of use, low cost, and robust features such as internal thermal overload protection and short circuit current limiting. It is suitable for various applications requiring a modest current level and offers significant advantages over traditional resistor/zener diode configurations.
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 | 50 | mV | |
| Dropout Voltage (IO = 40 mA, TJ = +25°C) | -1.7 | Vdc | ||
| Input Bias Current Change | 0.1 | 1.5 | mA | |
| Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) | 200 | μV | ||
| Ripple Rejection (−29 ≤ VI ≤ −35 Vdc, f = 120 Hz, TJ = +25°C) | 31 | 47 | dB | |
| Operating Temperature Range | 0°C | 125°C | ||
| Package | TO-92 (Pb-Free) |
Key Features
- No External Components Required: The regulator can operate without the need for additional external components in most applications.
- Internal Short Circuit Current Limiting: Protects the device from short circuit conditions.
- Internal Thermal Overload Protection: Shuts down the circuit when subjected to excessive power overload conditions.
- Low Cost: An economical solution for negative voltage regulation needs.
- Complementary Positive Regulators Offered (MC78L00 Series): Allows for flexibility in design by providing both negative and positive voltage regulation options.
- Pb-Free Packages Available: Compliant with lead-free requirements, making it suitable for a wide range of applications.
Applications
The MC79L12ACPG is versatile and can be used in various applications where a regulated negative voltage is required. Some common uses include:
- On-card regulation: For local voltage regulation on circuit boards.
- Industrial control systems: Where stable negative voltages are necessary.
- Consumer electronics: In devices that require regulated negative voltages.
- Automotive systems: For applications requiring robust and reliable voltage regulation.
Q & A
- What is the output voltage of the MC79L12ACPG?
The output voltage of the MC79L12ACPG is typically -12 V, with a range of -11.5 V to -12.5 V at TJ = +25°C. - What is the maximum current output of the MC79L12ACPG?
The maximum current output is up to 100 mA. - What are the key protection features of the MC79L12ACPG?
The key protection features include internal thermal overload protection and internal short circuit current limiting. - What are the available package types for the MC79L12ACPG?
The MC79L12ACPG is available in TO-92 (Pb-Free) packages. - What is the operating temperature range of the MC79L12ACPG?
The operating temperature range is from 0°C to +125°C. - Does the MC79L12ACPG require external components for operation?
No, in most applications, no external components are required for operation. - What is the dropout voltage of the MC79L12ACPG?
The dropout voltage is typically -1.7 Vdc at IO = 40 mA and TJ = +25°C. - What is the ripple rejection of the MC79L12ACPG?
The ripple rejection is typically 47 dB at -29 ≤ VI ≤ -35 Vdc and f = 120 Hz at TJ = +25°C. - Is the MC79L12ACPG lead-free?
Yes, the MC79L12ACPG is available in Pb-Free packages. - What are some common applications of the MC79L12ACPG?
Common applications include on-card regulation, industrial control systems, consumer electronics, and automotive systems.
