Overview
The MC7912BTG is a negative voltage regulator produced by onsemi, designed to provide a stable and regulated output voltage. This component is part of the MC7900 series, known for its reliability and performance in various electronic systems. The MC7912BTG is specifically configured to deliver a fixed output voltage of -12V, making it suitable for applications requiring a stable negative voltage supply.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (TJ = +25°C) | -11.5 | -12 | -12.5 | Vdc |
| Input Voltage Range | -14.5 | -30 | Vdc | |
| Maximum Input Voltage | -35 | Vdc | ||
| Output Current | 5.0 mA | 1.5 A | ||
| Line Regulation (TJ = +25°C, IO = 100 mA) | 13 | 55 | mV | |
| Load Regulation (TJ = +25°C, 5.0 mA ≤ IO ≤ 1.5 A) | 46 | 120 | mV | |
| Dropout Voltage (IO = 1.0 A, TJ = +25°C) | 1.3 | Vdc | ||
| Ripple Rejection (IO = 20 mA, f = 120 Hz) | 61 | dB | ||
| Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) | 75 | μV | ||
| Average Temperature Coefficient of Output Voltage | -1.0 | mV/°C |
Key Features
- Stable Output Voltage: The MC7912BTG provides a fixed output voltage of -12V, ensuring consistent performance in various applications.
- High Current Capability: It can handle output currents up to 1.5 A, making it suitable for power-intensive systems.
- Low Dropout Voltage: With a dropout voltage of 1.3 Vdc at 1.0 A, it minimizes power loss and enhances efficiency.
- Excellent Line and Load Regulation: The component offers robust line and load regulation, ensuring stable output voltage across a range of input voltages and load conditions.
- High Ripple Rejection: It features a high ripple rejection ratio of 61 dB at 120 Hz, reducing noise and ensuring a clean output voltage.
- Low Output Noise: The output noise voltage is 75 μV, contributing to a quieter operation.
Applications
The MC7912BTG is versatile and can be used in a variety of applications, including:
- Power Supplies: It is ideal for designing negative voltage power supplies in electronic equipment.
- Audio Equipment: The low noise and high ripple rejection make it suitable for audio equipment requiring stable negative voltage supplies.
- Industrial Control Systems: It can be used in industrial control systems where reliable and stable negative voltage is necessary.
- Medical Devices: The component's stability and low noise characteristics make it appropriate for use in medical devices.
Q & A
- What is the output voltage of the MC7912BTG?
The output voltage of the MC7912BTG is -12V. - What is the maximum input voltage for the MC7912BTG?
The maximum input voltage for the MC7912BTG is -35 Vdc. - What is the maximum output current of the MC7912BTG?
The maximum output current of the MC7912BTG is 1.5 A. - What is the dropout voltage of the MC7912BTG at 1.0 A?
The dropout voltage of the MC7912BTG at 1.0 A is 1.3 Vdc. - What is the ripple rejection ratio of the MC7912BTG?
The ripple rejection ratio of the MC7912BTG is 61 dB at 120 Hz. - What is the output noise voltage of the MC7912BTG?
The output noise voltage of the MC7912BTG is 75 μV. - What is the average temperature coefficient of the output voltage?
The average temperature coefficient of the output voltage is -1.0 mV/°C. - What are some common applications of the MC7912BTG?
The MC7912BTG is commonly used in power supplies, audio equipment, industrial control systems, and medical devices. - How does the MC7912BTG ensure stable output voltage?
The MC7912BTG ensures stable output voltage through its robust line and load regulation capabilities. - Is the MC7912BTG suitable for high-current applications?
Yes, the MC7912BTG is suitable for high-current applications, supporting up to 1.5 A of output current.
