Overview
The L78M12ABDT-TR is a linear voltage regulator from STMicroelectronics, part of the L78M series. This regulator is designed to provide a fixed output voltage of 12V with a maximum current output of 500mA. It is available in the TO-220 package, making it suitable for a variety of applications requiring stable voltage regulation. The L78M series regulators are known for their high performance, reliability, and ease of use in power supply systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VO) | 11.75 - 12.25 | V |
| Output Current (IO) | Up to 500 | mA |
| Input Voltage (VI) | Up to 35 V for VO = 5 to 18 V, Up to 40 V for VO = 20, 24 V | V |
| Power Dissipation | Internally limited | mW |
| Storage Temperature Range | -65 to 150 | °C |
| Operating Junction Temperature Range | -40 to 125 | °C |
| Thermal Resistance Junction-Case (RthJC) | 5 | °C/W |
| Thermal Resistance Junction-Ambient (RthJA) | 50 | °C/W |
| Line Regulation | 100 mV (VI = 14.5 to 30 V, IO = 200 mA) | mV |
| Load Regulation | 240 mV (IO = 5 to 500 mA) | mV |
| Quiescent Current | 6 mA | mA |
| Dropout Voltage | 2 V | V |
Key Features
- Fixed Output Voltage: Provides a stable 12V output voltage.
- High Current Capability: Can supply up to 500mA of current.
- Thermal Protection: Internally limited power dissipation and thermal resistance ensure safe operation.
- Wide Operating Temperature Range: Operates from -40°C to 125°C.
- Low Dropout Voltage: Dropout voltage of 2V ensures efficient voltage regulation.
- Compact Packaging: Available in the TO-220 package, suitable for various applications.
Applications
The L78M12ABDT-TR is suitable for a wide range of applications requiring stable voltage regulation, including:
- Power supply systems for electronic devices.
- Industrial control systems.
- Automotive electronics.
- Consumer electronics.
- Medical devices.
Q & A
- What is the output voltage of the L78M12ABDT-TR?
The output voltage is 12V. - What is the maximum current output of the L78M12ABDT-TR?
The maximum current output is 500mA. - What is the input voltage range for the L78M12ABDT-TR?
The input voltage range is up to 35V for VO = 5 to 18V and up to 40V for VO = 20, 24V. - What is the operating junction temperature range for the L78M12ABDT-TR?
The operating junction temperature range is -40°C to 125°C. - What is the thermal resistance junction-case (RthJC) for the L78M12ABDT-TR?
The thermal resistance junction-case (RthJC) is 5°C/W. - What is the dropout voltage of the L78M12ABDT-TR?
The dropout voltage is 2V. - What package type is the L78M12ABDT-TR available in?
The L78M12ABDT-TR is available in the TO-220 package. - What are some common applications for the L78M12ABDT-TR?
Common applications include power supply systems, industrial control systems, automotive electronics, consumer electronics, and medical devices. - What is the quiescent current of the L78M12ABDT-TR?
The quiescent current is 6mA. - What is the line regulation of the L78M12ABDT-TR?
The line regulation is 100mV (VI = 14.5 to 30V, IO = 200mA).
