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Description
The LM317TG is a versatile, adjustable three-terminal voltage regulator designed by Texas Instruments. It is widely used in electronic circuits for regulating and maintaining a stable output voltage. It can output a voltage range from 1.25V to 37V, while capable of supplying up to 1.5A of load current when used with appropriate heat sinking. The device operates with a dropout voltage as low as 3V, ensuring efficient performance.
This regulator is lauded for its ease of use, requiring only two external resistors to set the output voltage. It also features built-in current limiting, thermal overload protection, and safe area protection, enhancing its reliability in various applications.
The LM317TG comes in a TO-220 package, making it suitable for through-hole mounting on printed circuit boards. Its flexibility and robustness make it a popular choice for power supply designs in consumer electronics, telecommunications, and industrial applications. Its ability to provide a stable output in various conditions makes it a staple component for designers requiring adjustable voltage solutions.
This regulator is lauded for its ease of use, requiring only two external resistors to set the output voltage. It also features built-in current limiting, thermal overload protection, and safe area protection, enhancing its reliability in various applications.
The LM317TG comes in a TO-220 package, making it suitable for through-hole mounting on printed circuit boards. Its flexibility and robustness make it a popular choice for power supply designs in consumer electronics, telecommunications, and industrial applications. Its ability to provide a stable output in various conditions makes it a staple component for designers requiring adjustable voltage solutions.
Equivalent
The LM317TG is a popular adjustable voltage regulator. Equivalent products include:
1. L78xx series (for fixed outputs)
2. LM350 (higher current capacity)
3. LT1086
4. L200
5. NTE956
6. L4960
These alternatives might have different specifications, so ensure they meet your specific requirements regarding output current, voltage range, and thermal performance. Always check the datasheets for compatibility.
1. L78xx series (for fixed outputs)
2. LM350 (higher current capacity)
3. LT1086
4. L200
5. NTE956
6. L4960
These alternatives might have different specifications, so ensure they meet your specific requirements regarding output current, voltage range, and thermal performance. Always check the datasheets for compatibility.
Features
The LM317TG is a popular adjustable voltage regulator that provides a stable output voltage. Key features include:
1. Adjustable Output: It allows output voltage adjustment from 1.25V to 37V, making it versatile for various applications.
2. Current Capability: The device can deliver output currents up to 1.5A.
3. Thermal Overload Protection: It includes built-in protection to prevent damage from overheating.
4. Short-Circuit Protection: Guards against damage by limiting the current in case of a short circuit.
5. Load Regulation: Provides excellent load regulation, ensuring minimal output voltage changes with varying load conditions.
6. Line Regulation: Offers good line regulation, maintaining stable output despite fluctuations in the input voltage.
7. Dropout Voltage: Features a dropout voltage of around 3V, indicative of the minimum input-output voltage differential needed for proper regulation.
8. Package Type: Available in TO-220 and TO-263 packages, allowing for easy mounting and heat dissipation.
These features make the LM317TG suitable for use in power supplies, battery chargers, and other applications requiring a reliable and adjustable voltage source.
1. Adjustable Output: It allows output voltage adjustment from 1.25V to 37V, making it versatile for various applications.
2. Current Capability: The device can deliver output currents up to 1.5A.
3. Thermal Overload Protection: It includes built-in protection to prevent damage from overheating.
4. Short-Circuit Protection: Guards against damage by limiting the current in case of a short circuit.
5. Load Regulation: Provides excellent load regulation, ensuring minimal output voltage changes with varying load conditions.
6. Line Regulation: Offers good line regulation, maintaining stable output despite fluctuations in the input voltage.
7. Dropout Voltage: Features a dropout voltage of around 3V, indicative of the minimum input-output voltage differential needed for proper regulation.
8. Package Type: Available in TO-220 and TO-263 packages, allowing for easy mounting and heat dissipation.
These features make the LM317TG suitable for use in power supplies, battery chargers, and other applications requiring a reliable and adjustable voltage source.
Pinout
The LM317TG is a popular adjustable voltage regulator with a TO-220 package. It has three pins:
1. Input (Pin 1): This pin receives the unregulated input voltage, which should be at least 3V higher than the desired output voltage for proper regulation.
2. Output (Pin 2): This pin provides the regulated output voltage. The output voltage can be adjusted from 1.25V to 37V, depending on the resistor network connected between the output and adjustment pins.
3. Adjustment (Pin 3): This pin is used to set the output voltage by connecting it to a resistor network. By adjusting the resistance, you can change the output voltage within the specified range.
The LM317TG is widely used in power supply applications due to its ability to deliver up to 1.5A of output current, thermal overload protection, and short-circuit protection.
1. Input (Pin 1): This pin receives the unregulated input voltage, which should be at least 3V higher than the desired output voltage for proper regulation.
2. Output (Pin 2): This pin provides the regulated output voltage. The output voltage can be adjusted from 1.25V to 37V, depending on the resistor network connected between the output and adjustment pins.
3. Adjustment (Pin 3): This pin is used to set the output voltage by connecting it to a resistor network. By adjusting the resistance, you can change the output voltage within the specified range.
The LM317TG is widely used in power supply applications due to its ability to deliver up to 1.5A of output current, thermal overload protection, and short-circuit protection.
Manufacturer
The LM317TG is a voltage regulator that can be manufactured by several companies. Some of the prominent manufacturers include Texas Instruments, ON Semiconductor (now part of onsemi), and STMicroelectronics. These companies are well-known in the semiconductor industry.
1. Texas Instruments: An American technology company that designs and manufactures semiconductors and various integrated circuits. TI is known for its analog and embedded processing products.
2. ON Semiconductor (onsemi): Headquartered in the United States, onsemi specializes in performance and power solutions, providing a wide range of semiconductor products, including power and signal management, logic, discrete, and custom devices.
3. STMicroelectronics: A European multinational company, STMicroelectronics is one of the largest semiconductor companies globally. It offers a variety of electronic products and solutions, including microcontrollers, MEMS, and sensors.
These companies are key players in the electronics and semiconductor sectors, supplying components for a variety of applications such as consumer electronics, automotive, industrial, and more. Their products enable the development of energy-efficient and technologically advanced systems.
1. Texas Instruments: An American technology company that designs and manufactures semiconductors and various integrated circuits. TI is known for its analog and embedded processing products.
2. ON Semiconductor (onsemi): Headquartered in the United States, onsemi specializes in performance and power solutions, providing a wide range of semiconductor products, including power and signal management, logic, discrete, and custom devices.
3. STMicroelectronics: A European multinational company, STMicroelectronics is one of the largest semiconductor companies globally. It offers a variety of electronic products and solutions, including microcontrollers, MEMS, and sensors.
These companies are key players in the electronics and semiconductor sectors, supplying components for a variety of applications such as consumer electronics, automotive, industrial, and more. Their products enable the development of energy-efficient and technologically advanced systems.
Application
The LM317TG is a versatile adjustable voltage regulator used in various applications. It provides a stable output voltage, making it ideal for power supply design in electronic projects. Common applications include battery chargers, where it ensures consistent charging voltage, and adjustable power supplies for testing and development environments. It's also used in creating constant current sources for driving LEDs or other components that require precise current control. Additionally, the LM317TG is employed in voltage regulation circuits for embedded systems and consumer electronics, ensuring stable operation across varying loads and input voltages. Its ease of use and reliability make it a popular choice for hobbyists and professionals alike.
Package
The LM317TG is a voltage regulator available in a TO-220 package. This package type is characterized by a three-pin configuration, often used for through-hole mounting, and a tab for heat dissipation. It is designed to provide adjustable output voltages and is commonly utilized in power supply applications.
