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LM317AT/NOPB
IC REG LIN POS ADJ 1.5A TO220-3
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- 製造商。 部分 #LM317AT/NOPB
- 包 TO-220 (NDE)-3
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規格
| Package | Tube |
| ProductStatus | Active |
| OutputConfiguration | Positive |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 40V |
| Voltage-Output(Min/Fixed) | 1.25V |
| Voltage-Output(Max) | 37V |
| Current-Output | 1.5A |
| Current-Quiescent(Iq) | 10 mA |
| PSRR | 80dB ~ 65dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | TO-220-3 |
概述
Description
The LM317AT/NOPB is a popular adjustable voltage regulator from Texas Instruments. It provides a regulated output voltage, adjustable from 1.25V to 37V, with an input voltage requirement of 3V to 40V. This device can supply output currents up to 1.5A, making it suitable for a variety of power supply applications.
Key features of the LM317AT/NOPB include internal current limiting, thermal overload protection, and safe area compensation, which enhance its reliability and safety in various operating conditions. The device is commonly used in applications such as battery chargers, adjustable power supplies, and power adapters.
The LM317AT/NOPB comes in a TO-220 package, facilitating easy mounting and cooling. Its output voltage is set using two external resistors, and its versatile design makes it suitable for both linear regulation and switch-mode power supply configurations.
Overall, the LM317AT/NOPB is a robust and flexible solution for creating precise voltage outputs in electronic circuits.
Key features of the LM317AT/NOPB include internal current limiting, thermal overload protection, and safe area compensation, which enhance its reliability and safety in various operating conditions. The device is commonly used in applications such as battery chargers, adjustable power supplies, and power adapters.
The LM317AT/NOPB comes in a TO-220 package, facilitating easy mounting and cooling. Its output voltage is set using two external resistors, and its versatile design makes it suitable for both linear regulation and switch-mode power supply configurations.
Overall, the LM317AT/NOPB is a robust and flexible solution for creating precise voltage outputs in electronic circuits.
Features
The LM317AT/NOPB is a versatile three-terminal adjustable voltage regulator. Key features include:
1. Output Voltage Range: It offers an adjustable output voltage range from 1.25V to 37V, allowing precise voltage control for various applications.
2. Output Current Capability: The device can provide up to 1.5A of output current, making it suitable for medium power applications.
3. Line and Load Regulation: It exhibits excellent line and load regulation characteristics, ensuring stable output voltage despite variations in input voltage or load current.
4. Thermal Overload Protection: The regulator includes built-in protection against overheating, which is crucial for preventing damage due to excessive power dissipation.
5. Short-Circuit Protection: It has current limiting features to protect against short circuits.
6. Safe Operating Area Protection: The device ensures it operates within safe limits under different conditions, protecting both the regulator and the load.
7. Package Type: Available in a TO-220 package, which provides efficient heat dissipation.
8. Low Component Count: Requires only a few external components for operation, simplifying design and reducing cost.
These features make the LM317AT/NOPB ideal for a wide range of applications, including powering electronic circuits, battery chargers, and more.
1. Output Voltage Range: It offers an adjustable output voltage range from 1.25V to 37V, allowing precise voltage control for various applications.
2. Output Current Capability: The device can provide up to 1.5A of output current, making it suitable for medium power applications.
3. Line and Load Regulation: It exhibits excellent line and load regulation characteristics, ensuring stable output voltage despite variations in input voltage or load current.
4. Thermal Overload Protection: The regulator includes built-in protection against overheating, which is crucial for preventing damage due to excessive power dissipation.
5. Short-Circuit Protection: It has current limiting features to protect against short circuits.
6. Safe Operating Area Protection: The device ensures it operates within safe limits under different conditions, protecting both the regulator and the load.
7. Package Type: Available in a TO-220 package, which provides efficient heat dissipation.
8. Low Component Count: Requires only a few external components for operation, simplifying design and reducing cost.
These features make the LM317AT/NOPB ideal for a wide range of applications, including powering electronic circuits, battery chargers, and more.
Package
The LM317AT/NOPB is in a TO-220 package. The TO-220 package is a commonly used style for power semiconductors, providing a balance of size, heat dissipation, and ease of mounting on a heatsink.
Pinout
The LM317AT/NOPB is a three-terminal adjustable voltage regulator. It is capable of supplying up to 1.5A of load current and has an output voltage range that can be adjusted from 1.25V to 37V. The device is commonly used in applications requiring a variable voltage supply.
Pin Count and Functions:
1. Input (Pin 1): This pin receives the input voltage, which must be higher than the desired output voltage by a certain margin to achieve proper regulation.
2. Output (Pin 2): This pin delivers the regulated output voltage to the load. The voltage can be adjusted using external resistors.
3. Adjust (Pin 3): This pin is used to set the output voltage. By connecting a resistor divider network between the output and ground, the output voltage can be configured to the desired level.
The LM317 series is popular for its versatility, ease of use, and ability to provide a stable and adjustable output voltage.
Pin Count and Functions:
1. Input (Pin 1): This pin receives the input voltage, which must be higher than the desired output voltage by a certain margin to achieve proper regulation.
2. Output (Pin 2): This pin delivers the regulated output voltage to the load. The voltage can be adjusted using external resistors.
3. Adjust (Pin 3): This pin is used to set the output voltage. By connecting a resistor divider network between the output and ground, the output voltage can be configured to the desired level.
The LM317 series is popular for its versatility, ease of use, and ability to provide a stable and adjustable output voltage.
Manufacturer
The LM317AT/NOPB is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company renowned for designing and manufacturing semiconductors and various integrated circuits. TI is considered one of the largest semiconductor companies in the world and is a leader in the production of analog chips and embedded processors. The company serves a wide range of markets, including automotive, industrial, personal electronics, communications equipment, and enterprise systems.
Application
The LM317AT/NOPB is a versatile voltage regulator used in various applications, including power supply design, battery chargers, and adjustable voltage regulation. It is suitable for use in consumer electronics, telecommunications equipment, and industrial automation systems. Additionally, it can be implemented in DIY electronics projects for providing stable voltage outputs in circuits requiring adjustable voltage levels.
Equivalent
Equivalent products to the LM317AT/NOPB voltage regulator include:
1. LM317T - A widely used adjustable voltage regulator with similar specifications.
2. UA78M33CT - Offers similar output current capabilities.
3. L78S05CV - Another adjustable regulator with comparable features.
4. NTE956 - General-purpose adjustable regulator with similar performance.
5. STMicroelectronics L78S05CV - Provides similar voltage regulation capabilities.
These alternatives offer adjustable output, similar voltage range, and current-handling capabilities. Always check datasheets for specific parameters and compatibility.
1. LM317T - A widely used adjustable voltage regulator with similar specifications.
2. UA78M33CT - Offers similar output current capabilities.
3. L78S05CV - Another adjustable regulator with comparable features.
4. NTE956 - General-purpose adjustable regulator with similar performance.
5. STMicroelectronics L78S05CV - Provides similar voltage regulation capabilities.
These alternatives offer adjustable output, similar voltage range, and current-handling capabilities. Always check datasheets for specific parameters and compatibility.
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