The LM317LG-S08-R is an adjustable positive voltage regulator manufactured by UTC (Unisonic Technologies Co., Ltd.). Similar to the LM317AL, it is capable of supplying more than 1.5A over an output voltage range of 1.2V to 37V. Its ease of use, requiring only two external resistors to set the output voltage, coupled with its robust overload protection features, including current limiting and thermal shutdown, makes it a versatile and reliable component.

Applications:

• Adjustable Power Supplies: Ideal for creating custom voltage supplies for various applications.
• Battery Chargers: Used in charging circuits for different types of batteries.
• Current Regulators: Can be configured as a constant current source.
• Bench Power Supplies: Suitable for laboratory and hobbyist power supply projects.
• Industrial Control Systems: Provides stable voltage regulation in industrial settings.

Features:

• Adjustable Output Voltage: The output voltage can be adjusted from 1.2V to 37V.
• Output Current Capability: Capable of delivering over 1.5A of output current.
• Internal Thermal Overload Protection: Prevents overheating and potential damage to the regulator.
• Short Circuit Current Limiting: Protects both the regulator and the connected load from short circuit conditions.
• Output Transistor Safe-Area Compensation: Enhances the reliability of the regulator under varying operating conditions.
• Floating Operation: Can be used in configurations where neither the input nor the output is grounded.

Benefits:

• Versatile Voltage Regulation: The adjustable output voltage provides a wide range of flexibility for different applications.
• Robust Protection: Built-in protection features ensure dependable operation under various fault conditions.
• Simple Implementation: Requires only two external resistors for setting the output voltage.
• Cost-Effective Solution: A reliable and versatile solution for voltage regulation at a competitive cost.

Additional Details:

The output voltage of the LM317LG-S08-R is set using two external resistors configured as a voltage divider. The specific resistor values are determined based on the desired output voltage, using formulas provided in the UTC datasheet. Input and output capacitors are generally used to improve stability and reduce noise. The regulator's thermal resistance dictates the maximum power dissipation; therefore, proper heat sinking may be necessary, depending on the input voltage, output voltage, and load current. For detailed specifications, including absolute maximum ratings, thermal characteristics, and recommended application circuits, always refer to the official datasheet before using this component.