Overview
The L7812CD2T-TR is a three-terminal positive voltage regulator produced by STMicroelectronics. This component is part of the L78 series, known for its reliability and versatility in providing stable voltage outputs. The L7812CD2T-TR is specifically designed to deliver a fixed output voltage of 12V with a maximum current of 1.5A, making it suitable for a wide range of applications requiring local on-card regulation.
This regulator features internal current limiting, thermal shutdown, and safe area protection, ensuring robust operation and protection against overloads and thermal stress. The device is packaged in a TO-263-3 (D2PAK) surface mount package, facilitating easy integration into various electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage - Max | 35 | V |
| Output Voltage - Fixed | 12 | V |
| Dropout Voltage - Max | 2 | V |
| Output Current - Max | 1.5 | A |
| Operating Temperature Range | 0 to 125 | °C |
| Regulator Topology | Fixed | |
| Quiescent Current | 8 | mA |
| No. of Outputs | Single | |
| Load Regulation | 240 mV | |
| Line Regulation | 240 mV | |
| Package Style | TO-263-3 (D2PAK) | |
| Mounting Method | Surface Mount |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of 12 V with a 2% output voltage tolerance
- Thermal overload protection and short circuit protection
- Output transition SOA (Safe Operating Area) protection
- Internal current limiting and safe area protection
- Guaranteed operation in an extended temperature range (0°C to 125°C)
- Surface mount TO-263-3 (D2PAK) package for easy integration
Applications
The L7812CD2T-TR is versatile and can be used in a wide range of applications, including:
- Local on-card regulation to eliminate distribution problems associated with single point regulation
- Power supplies for electronic devices requiring stable 12V outputs
- Industrial control systems and automation
- Consumer electronics and appliances
- Automotive systems (though not specifically automotive-rated, it can be used in certain automotive applications with proper design considerations)
Q & A
- What is the maximum output current of the L7812CD2T-TR?
The maximum output current is 1.5 A.
- What is the fixed output voltage of the L7812CD2T-TR?
The fixed output voltage is 12 V.
- What is the maximum input voltage for the L7812CD2T-TR?
The maximum input voltage is 35 V.
- Does the L7812CD2T-TR have thermal protection?
Yes, it features thermal overload protection and thermal shutdown.
- What type of package does the L7812CD2T-TR come in?
The L7812CD2T-TR comes in a TO-263-3 (D2PAK) surface mount package.
- What is the operating temperature range of the L7812CD2T-TR?
The operating temperature range is from 0°C to 125°C.
- Does the L7812CD2T-TR have short circuit protection?
Yes, it includes short circuit protection.
- What is the load regulation of the L7812CD2T-TR?
The load regulation is 240 mV.
- What is the line regulation of the L7812CD2T-TR?
The line regulation is 240 mV.
- Can the L7812CD2T-TR be used with external components to obtain adjustable voltage and currents?
Yes, although designed primarily as a fixed voltage regulator, it can be used with external components to achieve adjustable voltage and currents.
