Overview
The MC79L12ACPRP is a negative linear voltage regulator from onsemi, designed to provide a regulated negative voltage output. This device is part of the MC79L00 series and is suitable for applications requiring up to 100 mA of current. It is known for its ease of use, low cost, and robust features such as internal thermal shutdown and current limiting, making it a reliable choice for various electronic systems.
The MC79L12ACPRP offers several advantages over traditional resistor/zener diode configurations, including the elimination of the need for external components in most applications. This regulator is available in TO-92 packages and is Pb-free, aligning with modern environmental standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (TJ = +25°C) | -11.5 to -12.5 | Vdc |
| Input Voltage Range | -13.7 to -35 | Vdc |
| Output Current | Up to 100 mA | mA |
| Input Regulation (TJ = +25°C) | 200 mV (max) | mV |
| Load Regulation (TJ = +25°C, 1.0 mA ≤ IO ≤ 40 mA) | 50 mV (max) | mV |
| Dropout Voltage (IO = 40 mA, TJ = +25°C) | 1.7 V (typ) | Vdc |
| Ripple Rejection (f = 120 Hz, TJ = +25°C) | 42 dB (typ) | dB |
| Output Noise Voltage (10 Hz ≤ f ≤ 100 kHz, TA = +25°C) | 80 µV (rms) | µV |
| Temperature Range | 0°C to +125°C | °C |
| Package Type | TO-92 |
Key Features
- No external components required for operation in most applications.
- Internal short circuit current limiting and thermal overload protection.
- Low cost and Pb-free packages available.
- Complementary positive regulators offered (MC78L00 Series).
- Robust and reliable design suitable for industrial applications.
Applications
The MC79L12ACPRP is useful in various applications where a regulated negative voltage is required, such as:
- On-card regulation in electronic devices.
- Industrial control systems.
- Power supplies and voltage regulators.
- Automotive and aerospace electronics.
- Any application requiring a modest current level of up to 100 mA.
Q & A
- What is the output voltage range of the MC79L12ACPRP?
The output voltage range is -11.5 to -12.5 Vdc at TJ = +25°C.
- What is the maximum output current of the MC79L12ACPRP?
The maximum output current is up to 100 mA.
- What are the key protection features of the MC79L12ACPRP?
The device features internal short circuit current limiting and thermal overload protection.
- What is the temperature range for the MC79L12ACPRP?
The operating temperature range is 0°C to +125°C.
- What package types are available for the MC79L12ACPRP?
The device is available in TO-92 packages.
- Is the MC79L12ACPRP Pb-free?
- What is the dropout voltage of the MC79L12ACPRP at 40 mA output current?
The dropout voltage is typically 1.7 V at IO = 40 mA and TJ = +25°C.
- What is the ripple rejection of the MC79L12ACPRP?
The ripple rejection is typically 42 dB at f = 120 Hz and TJ = +25°C.
- What is the output noise voltage of the MC79L12ACPRP?
The output noise voltage is typically 80 µV (rms) over the frequency range of 10 Hz to 100 kHz at TA = +25°C.
- Are external components required for the operation of the MC79L12ACPRP?
No, in most applications, no external components are required for operation.
