Overview
The L7812ABV-DG is a three-terminal positive voltage regulator from STMicroelectronics, part of the L78 series. This regulator is available in the TO-220 package and is designed to provide a fixed output voltage of 12 V. It is highly versatile and can be used in various applications requiring local on-card regulation, thus eliminating the issues associated with single point regulation. The L7812ABV-DG features internal current limiting, thermal shut-down, and safe area protection, making it robust and reliable. With adequate heat sinking, it can deliver output currents up to 1.5 A, and it can also be used with external components to achieve adjustable voltage and current outputs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 12 V | V |
| Output Current | Up to 1.5 A | A |
| Input Voltage | Up to 35 V for VO = 5 to 18 V, Up to 40 V for VO = 20, 24 V | V |
| Operating Temperature Range | -40 to 125 °C | °C |
| Thermal Resistance Junction-Case | 5 °C/W (TO-220) | °C/W |
| Thermal Resistance Junction-Ambient | 50 °C/W (TO-220) | °C/W |
| Output Voltage Tolerance | 2% (A version) | % |
| Dropout Voltage | 2 V at IO = 1 A | V |
| Short Circuit Current | 0.2 A at VI = 35 V | A |
| Quiescent Current | 8 mA at TJ = 25 °C | mA |
Key Features
- Output current up to 1.5 A
- Fixed output voltage of 12 V
- Thermal overload protection
- Short circuit protection
- Output transition SOA protection
- 2% output voltage tolerance (A version)
- Guaranteed operation in extended temperature range (A version)
- Internal current limiting and safe area protection
- Available in TO-220 package
Applications
The L7812ABV-DG is suitable for a wide range of applications, including:
- Communications equipment
- Computers and peripherals
- Industrial control systems
- Local on-card regulation in various electronic devices
Q & A
- What is the output voltage of the L7812ABV-DG?
The output voltage of the L7812ABV-DG is 12 V.
- What is the maximum output current of the L7812ABV-DG?
The maximum output current is up to 1.5 A.
- What are the operating temperature ranges for the L7812ABV-DG?
The operating temperature range is -40 to 125 °C.
- Does the L7812ABV-DG have thermal protection?
- What is the dropout voltage of the L7812ABV-DG?
The dropout voltage is 2 V at IO = 1 A.
- Can the L7812ABV-DG be used for adjustable voltage regulation?
- What is the quiescent current of the L7812ABV-DG?
The quiescent current is 8 mA at TJ = 25 °C.
- What are the typical applications of the L7812ABV-DG?
It is used in communications equipment, computers and peripherals, and industrial control systems.
- What package types are available for the L7812ABV-DG?
It is available in the TO-220 package.
- Does the L7812ABV-DG have short circuit protection?
