The LM317AL-TQ2-R is an adjustable positive voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). It is capable of supplying more than 1.5A over an output voltage range of 1.2V to 37V. It is exceptionally easy to use and requires only two external resistors to set the output voltage. The LM317AL-TQ2-R offers full overload protection, including current limiting and thermal shutdown, making it virtually blowout-proof.

Applications:

• Adjustable Power Supplies: Easily creates custom voltage supplies.
• Battery Chargers: Used in circuits for charging various battery types.
• Current Regulators: Configurable as a constant current source.
• Bench Power Supplies: Ideal for lab and hobbyist power supply projects.
• Linear Regulators in Industrial Applications: Provides stable voltage regulation in industrial environments.

Features:

• Adjustable Output Voltage: Output voltage can be adjusted from 1.2V to 37V.
• Output Current Exceeds 1.5A: Capable of providing substantial current for various loads.
• Internal Thermal Overload Protection: Prevents overheating and potential damage.
• Short Circuit Current Limiting: Protects the regulator and the load from short circuit conditions.
• Output Transistor Safe-Area Compensation: Enhances reliability under various operating conditions.
• Floating Operation for High Voltage Applications: Can be used in circuits where neither terminal is grounded.

Benefits:

• Versatile Voltage Regulation: Adjustable output voltage provides flexibility for a wide range of applications.
• Robust Overload Protection: Built-in protection features ensure reliable operation under various fault conditions.
• Ease of Use: Requires only two external resistors to set the output voltage.
• Cost-Effective Solution: Provides a reliable and versatile voltage regulation solution at a competitive price.

Additional Details:

The output voltage of the LM317AL-TQ2-R is determined by two external resistors connected as a voltage divider. The datasheet from UTC provides a formula for calculating the resistor values based on the desired output voltage. Input and output capacitors are typically used to improve stability and reduce noise. The regulator's thermal resistance will determine the maximum power dissipation. Proper heatsinking may be required to prevent overheating, depending on the input voltage, output voltage, and load current. Always refer to the official datasheet for detailed specifications, absolute maximum ratings, thermal characteristics, and application circuit recommendations before use.