Overview
The L7812ABD2T-TR is a positive voltage regulator IC produced by STMicroelectronics. It is part of the L78 series, designed to provide local on-card regulation, thereby eliminating the distribution problems associated with single-point regulation. This regulator is capable of delivering a fixed output voltage of 12V with a maximum output current of 1.5A. It features internal current limiting, thermal shut-down, and safe area protection, making it highly reliable and robust. The device is packaged in a TO-263 (D2PAK) case and operates over a wide temperature range from -40°C to 125°C.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | STMicroelectronics |
| Type of Integrated Circuit | Voltage Regulator |
| Kind of Voltage Regulator | Fixed, Linear |
| Output Voltage | 12V |
| Output Current | 1.5A |
| Input Voltage Range | 14.8V to 25V (typical), up to 35V (max) |
| Case | TO-263 (D2PAK) |
| Mounting | Surface Mount |
| Operating Temperature Range | -40°C to 125°C |
| Tolerance | ±2% |
| Number of Channels | 1 |
| Voltage Drop | 2V (typical) |
| Quiescent Current | 4.4mA (typical at TJ = 25°C) |
| Supply Voltage Rejection | 60dB (typical at VI = 15 to 25V, f = 120Hz, IO = 500mA) |
| Output Noise Voltage | 10µV/VO (typical at TA = 25°C, B = 10Hz to 100KHz) |
| Output Voltage Drift | -1mV/°C (typical) |
Key Features
- Internal current limiting, thermal shut-down, and safe area protection for robust operation.
- Fixed output voltage of 12V with a tolerance of ±2%.
- Maximum output current of 1.5A.
- Operating temperature range from -40°C to 125°C.
- Low dropout voltage of 2V (typical).
- High supply voltage rejection of 60dB (typical at VI = 15 to 25V, f = 120Hz, IO = 500mA).
- Low output noise voltage of 10µV/VO (typical at TA = 25°C, B = 10Hz to 100KHz).
- Short circuit protection and thermal overload protection.
Applications
The L7812ABD2T-TR is suitable for a variety of applications requiring stable and reliable voltage regulation. These include:
- Local on-card regulation in electronic devices to eliminate distribution problems associated with single-point regulation.
- Power supplies for industrial, automotive, and consumer electronics.
- Embedded systems and microcontroller-based projects requiring a stable voltage source.
- Audio and video equipment where low noise and stable voltage are crucial.
Q & A
- What is the output voltage of the L7812ABD2T-TR?
The output voltage is 12V with a tolerance of ±2%.
- What is the maximum output current of the L7812ABD2T-TR?
The maximum output current is 1.5A).
- What is the operating temperature range of the L7812ABD2T-TR?
The operating temperature range is from -40°C to 125°C).
- What type of package does the L7812ABD2T-TR come in?
The device is packaged in a TO-263 (D2PAK) case).
- Does the L7812ABD2T-TR have built-in protection features?
Yes, it includes internal current limiting, thermal shut-down, and safe area protection).
- What is the input voltage range for the L7812ABD2T-TR?
The typical input voltage range is 14.8V to 25V, with a maximum of 35V).
- Is the L7812ABD2T-TR RoHS compliant?
Yes, the L7812ABD2T-TR is RoHS compliant).
- What is the quiescent current of the L7812ABD2T-TR?
The quiescent current is 4.4mA (typical at TJ = 25°C)).
- What is the supply voltage rejection of the L7812ABD2T-TR?
The supply voltage rejection is 60dB (typical at VI = 15 to 25V, f = 120Hz, IO = 500mA)).
- Can the L7812ABD2T-TR be used for adjustable voltage regulation?
Although designed primarily as a fixed voltage regulator, it can be used with external components to obtain adjustable voltage and currents).
