Overview
The L7912ACV-DG is a linear voltage regulator produced by STMicroelectronics. This component is designed to provide a stable negative output voltage of -12V with a maximum output current of 1.5A. It is particularly suited for applications requiring a reliable and stable negative voltage supply, such as in split power supplies. The regulator is available in the TO-220 package, which is widely used for its ease of heat sinking and robust mechanical design.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | -12 | V |
| Output Current | 1.5 | A |
| Input Voltage Range | -14.5 to -30 | V |
| Line Regulation | 240 mV (VI = -14.5 to -30 V) | mV |
| Load Regulation | 240 mV (IO = 5 mA to 1.5 A) | mV |
| Quiescent Current | 3 mA | mA |
| Thermal Resistance Junction-Case | 3 °C/W (TO-220) | °C/W |
| Operating Junction Temperature Range | 0 to 125 °C | °C |
| Storage Temperature Range | -65 to 150 °C | °C |
| Package Type | TO-220 |
Key Features
- Fixed negative output voltage of -12V.
- Maximum output current of 1.5A.
- Internally limited current and thermal protection.
- Low dropout voltage.
- High line and load regulation.
- Available in TO-220 package for easy heat sinking.
- Can be used with external components to obtain adjustable voltages and currents.
Applications
The L7912ACV-DG is suitable for a variety of applications, including:
- SPLIT power supplies where both positive and negative voltages are required.
- Industrial control systems.
- AUDIO and video equipment.
- Medical devices.
- Any system requiring a stable negative voltage supply.
Q & A
- What is the output voltage of the L7912ACV-DG?
The output voltage of the L7912ACV-DG is -12V. - What is the maximum output current of the L7912ACV-DG?
The maximum output current is 1.5A. - What is the input voltage range for the L7912ACV-DG?
The input voltage range is from -14.5V to -30V. - What is the thermal resistance junction-case for the TO-220 package?
The thermal resistance junction-case for the TO-220 package is 3 °C/W. - What is the operating junction temperature range for the L7912ACV-DG?
The operating junction temperature range is from 0 to 125 °C. - Can the L7912ACV-DG be used for adjustable voltages?
Yes, the L7912ACV-DG can be used with external components to obtain adjustable voltages and currents. - What package type is the L7912ACV-DG available in?
The L7912ACV-DG is available in the TO-220 package. - What are some common applications for the L7912ACV-DG?
Common applications include split power supplies, industrial control systems, audio and video equipment, and medical devices. - What is the quiescent current of the L7912ACV-DG?
The quiescent current is 3 mA. - Is the L7912ACV-DG protected against overheating?
Yes, it has internal thermal protection.
