Overview
The LM317MT is a medium-current, adjustable voltage regulator produced by Fairchild Semiconductor, now part of ON Semiconductor. This regulator is known for its high performance and versatility, making it a popular choice in various electronic applications. It operates within a wide input voltage range and can provide a stable output voltage adjustable from 1.2V to 37V. The LM317MT is available in a 3-pin SIP (Single In-Line Package) and is ROHS compliant, ensuring environmental sustainability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage Range | 1.2 to 37 | V |
| Input Voltage Range | Up to 40V (typically), but can handle up to 450VDC in some configurations | V |
| Output Current | 0.5A (continuous), 1.5A (peak) | A |
| Line Regulation | 0.01% / V | %/V |
| Load Regulation | 0.1% / mA | %/mA |
| Dropout Voltage | Typically 2V at 0.5A | V |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 3-pin SIP (Single In-Line Package) |
Key Features
- Adjustable Output Voltage: The LM317MT allows for adjustable output voltage from 1.2V to 37V, making it highly versatile for various applications.
- High Input Voltage Range: It can handle input voltages up to 450VDC in certain configurations, providing a wide operating range.
- Low Dropout Voltage: Typically 2V at 0.5A, which is beneficial for efficient power regulation.
- High Accuracy: Features excellent line and load regulation, ensuring stable output voltage under varying conditions.
- Compact Package: Available in a 3-pin SIP package, making it suitable for space-constrained designs.
- ROHS Compliant: Ensures environmental sustainability and compliance with regulatory standards.
Applications
- Power Supplies: Widely used in adjustable voltage power supply units due to its adjustable output and high input voltage range.
- Electronic Test Equipment: Suitable for use in test equipment where adjustable voltage is required.
- Industrial Control Systems: Used in various industrial control systems that require stable and adjustable voltage regulation.
- Automotive Systems: Can be used in automotive applications where a reliable and adjustable voltage regulator is necessary.
- Consumer Electronics: Found in various consumer electronic devices that require efficient and stable power regulation.
Q & A
- What is the output voltage range of the LM317MT?
The output voltage range of the LM317MT is adjustable from 1.2V to 37V.
- What is the maximum input voltage the LM317MT can handle?
The LM317MT can handle input voltages up to 450VDC in certain configurations.
- What is the typical dropout voltage of the LM317MT?
The typical dropout voltage of the LM317MT is 2V at 0.5A.
- What is the package type of the LM317MT?
The LM317MT is available in a 3-pin SIP (Single In-Line Package).
- Is the LM317MT ROHS compliant?
- What are some common applications of the LM317MT?
The LM317MT is commonly used in power supplies, electronic test equipment, industrial control systems, automotive systems, and consumer electronics.
- How do I adjust the output voltage of the LM317MT?
The output voltage can be adjusted using external resistors R1 and R2 according to the formula provided in the datasheet.
- What is the operating temperature range of the LM317MT?
The operating temperature range of the LM317MT is -40°C to +125°C.
- What is the maximum continuous output current of the LM317MT?
The maximum continuous output current of the LM317MT is 0.5A, with a peak current of 1.5A.
- How do I ensure proper heat dissipation for the LM317MT?
Proper heat dissipation can be ensured by using the recommended heatsinks and limiting power dissipation according to the datasheet guidelines.
