Overview
The L7912CV-DG is a negative voltage regulator produced by STMicroelectronics. It belongs to the L79 series of three-terminal negative regulators, which are available in various packages including TO-220, TO-220FP, and D²PAK. This regulator is designed to provide a fixed output voltage of -12V and can handle an output current of up to 1.5A. It is suitable for applications requiring local on-card regulation, thereby eliminating distribution problems associated with long power supply lines.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | -11.5 to -12.5 | V |
| Output Current | Up to 1.5 | A |
| Input Voltage Range | -15.5 to -27 | 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 |
| Dropout Voltage | 1.1 V (IO = 1 A) | V |
| Short Circuit Current | 1.5 A | A |
| Operating Junction Temperature Range | 0 to 150 | °C |
| Thermal Resistance Junction-Case | 5 °C/W (TO-220) | °C/W |
| Thermal Resistance Junction-Ambient | 50 °C/W (TO-220) | °C/W |
Key Features
- Fixed output voltage of -12V
- High output current capability up to 1.5A
- Available in TO-220, TO-220FP, and D²PAK packages
- Internal thermal overload protection and short-circuit protection
- Low dropout voltage of 1.1V at 1A output current
- High supply voltage rejection ratio (SVR) of 54 to 60 dB
- Operating temperature range from 0°C to 150°C
Applications
The L7912CV-DG is versatile and can be used in a variety of applications, including:
- Local on-card regulation to eliminate distribution problems associated with long power supply lines
- Power supplies for industrial and consumer electronics
- Automotive systems requiring stable negative voltage supplies
- Telecommunication equipment and networking devices
- Medical devices and equipment requiring reliable power regulation
Q & A
- What is the output voltage of the L7912CV-DG?
The output voltage of the L7912CV-DG is -12V. - What is the maximum output current of the L7912CV-DG?
The maximum output current is up to 1.5A. - What are the available packages for the L7912CV-DG?
The L7912CV-DG is available in TO-220, TO-220FP, and D²PAK packages. - What is the operating temperature range of the L7912CV-DG?
The operating temperature range is from 0°C to 150°C. - Does the L7912CV-DG have internal protection features?
Yes, it has internal thermal overload protection and short-circuit protection. - What is the dropout voltage of the L7912CV-DG at 1A output current?
The dropout voltage is 1.1V at 1A output current. - What is the supply voltage rejection ratio (SVR) of the L7912CV-DG?
The SVR is 54 to 60 dB. - Is the L7912CV-DG RoHS compliant?
Yes, the L7912CV-DG is RoHS compliant with Ecopack2 certification. - What are some common applications of the L7912CV-DG?
Common applications include local on-card regulation, power supplies for industrial and consumer electronics, automotive systems, telecommunication equipment, and medical devices. - Where can I purchase the L7912CV-DG?
You can purchase the L7912CV-DG directly from STMicroelectronics or through authorized distributors like Digi-Key and Mouser Electronics.
