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LM317EMP
IC REG LIN POS ADJ 1.5A SOT223-4
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- 製造商。 部分 #LM317EMP
- 包 SOT-223 (DCY)-4
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規格
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Not For New Designs |
| OutputConfiguration | Positive |
| OutputType | Adjustable |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 37V |
| Voltage-Output(Min/Fixed) | 1.25V |
| Voltage-Output(Max) | 37V |
| Current-Output | 1.5A |
| PSRR | 80dB ~ 65dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Short Circuit |
| OperatingTemperature | 0°C ~ 125°C |
| MountingType | Surface Mount |
| Package/Case | TO-261-4, TO-261AA |
概述
Description
The LM317EMP is a versatile, adjustable linear voltage regulator capable of supplying a stable output voltage ranging from 1.25V to 37V, with a maximum current output of 1.5A. Housed in a SOT-223 package, it is designed for surface-mount applications. The LM317EMP is commonly used in various electronic devices to provide a reliable voltage regulation solution, particularly in situations where precise voltage control is necessary.
Key features of the LM317EMP include its ability to maintain a constant voltage output despite changes in input voltage or load conditions, its thermal overload protection, and short-circuit protection which enhance its reliability and safety in diverse applications. The device operates with an input-output voltage differential as low as 3V, making it efficient for many low-dropout applications.
It typically requires two external resistors to set the desired output voltage, allowing for significant flexibility in circuit design. Its straightforward implementation and dependable performance make the LM317EMP a popular choice for voltage regulation in power supplies, battery chargers, and other electronic circuits requiring a stable voltage.
Key features of the LM317EMP include its ability to maintain a constant voltage output despite changes in input voltage or load conditions, its thermal overload protection, and short-circuit protection which enhance its reliability and safety in diverse applications. The device operates with an input-output voltage differential as low as 3V, making it efficient for many low-dropout applications.
It typically requires two external resistors to set the desired output voltage, allowing for significant flexibility in circuit design. Its straightforward implementation and dependable performance make the LM317EMP a popular choice for voltage regulation in power supplies, battery chargers, and other electronic circuits requiring a stable voltage.
Features
The LM317EMP is a popular adjustable voltage regulator with several key features:
1. Adjustable Output Voltage: It can provide an output voltage that ranges from 1.25V to 37V, making it versatile for different applications.
2. Output Current: The regulator can supply a maximum output current of 1.5A, suitable for medium power applications.
3. Line and Load Regulation: It offers excellent line and load regulation, ensuring stable output under varying input and load conditions.
4. Thermal Overload Protection: The LM317EMP includes built-in thermal overload protection to prevent damage from overheating.
5. Short Circuit Protection: It features internal current limiting and short circuit protection to safeguard against excessive current conditions.
6. Safe Area Protection: The device also incorporates safe area protection to ensure reliable operation.
7. Package Type: The "EMP" suffix indicates that this version comes in a TO-252 surface-mount package, offering efficient thermal performance and space-saving design.
These features make the LM317EMP an ideal choice for applications requiring a reliable and adjustable power supply, including battery chargers, power supplies, and other electronics requiring variable voltage outputs.
1. Adjustable Output Voltage: It can provide an output voltage that ranges from 1.25V to 37V, making it versatile for different applications.
2. Output Current: The regulator can supply a maximum output current of 1.5A, suitable for medium power applications.
3. Line and Load Regulation: It offers excellent line and load regulation, ensuring stable output under varying input and load conditions.
4. Thermal Overload Protection: The LM317EMP includes built-in thermal overload protection to prevent damage from overheating.
5. Short Circuit Protection: It features internal current limiting and short circuit protection to safeguard against excessive current conditions.
6. Safe Area Protection: The device also incorporates safe area protection to ensure reliable operation.
7. Package Type: The "EMP" suffix indicates that this version comes in a TO-252 surface-mount package, offering efficient thermal performance and space-saving design.
These features make the LM317EMP an ideal choice for applications requiring a reliable and adjustable power supply, including battery chargers, power supplies, and other electronics requiring variable voltage outputs.
Package
The LM317EMP is a voltage regulator available in a surface-mount package known as SOT-223. This package type is designed for efficient thermal performance while being compact, making the LM317EMP suitable for applications where space is limited.
Pinout
The LM317EMP is a 3-terminal adjustable voltage regulator. It is part of the LM317 series, which is commonly used for voltage regulation purposes in electronic circuits. The device typically comes in a small surface-mount SOT-223 package.
Pin Count and Functions:
1. Input (IN): This pin receives the unregulated input voltage. It's where you supply the voltage that you want to regulate down to a desired level.
2. Output (OUT): This pin outputs the regulated voltage. The output voltage is adjustable and can be set using a pair of external resistors.
3. Adjust (ADJ): This pin is used to set the output voltage. By connecting this pin to a resistor divider network between the output and ground, you can adjust the output voltage to your specific needs.
The LM317EMP can output a voltage range of 1.25V to 37V, depending on the input voltage and external components used. It is capable of supplying output currents up to 1.5 A when properly heat-sinked.
Pin Count and Functions:
1. Input (IN): This pin receives the unregulated input voltage. It's where you supply the voltage that you want to regulate down to a desired level.
2. Output (OUT): This pin outputs the regulated voltage. The output voltage is adjustable and can be set using a pair of external resistors.
3. Adjust (ADJ): This pin is used to set the output voltage. By connecting this pin to a resistor divider network between the output and ground, you can adjust the output voltage to your specific needs.
The LM317EMP can output a voltage range of 1.25V to 37V, depending on the input voltage and external components used. It is capable of supplying output currents up to 1.5 A when properly heat-sinked.
Manufacturer
The LM317EMP is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components and systems, including integrated circuits, sensors, and power management solutions. The company is well-known for its innovation and technological advancements in the electronics industry, serving various markets such as automotive, industrial, personal electronics, and communications. Texas Instruments is headquartered in Dallas, Texas, and has a strong presence worldwide, focusing on developing high-performance, reliable, and energy-efficient solutions.
Application
The LM317EMP is a versatile adjustable voltage regulator used in various applications. It provides a stable output voltage in power supply circuits for consumer electronics, industrial controls, and communication devices. It's commonly used in battery chargers, adjustable power supplies, and voltage regulation in microcontroller projects. The device is also used in LED drivers and in any application requiring a regulated power source with output voltages ranging from 1.25V to 37V. Its ability to deliver up to 1.5A of output current makes it suitable for numerous low to medium power applications.
Equivalent
The LM317EMP is a variable voltage regulator. Equivalent products include:
1. LM317T
2. LM317L
3. KA317
4. L78S
5. UA7805
6. NTE956
7. ON Semiconductor MC7805
These alternatives function similarly, with some variations in package type and specifications. Always check the datasheet for exact compatibility with your application.
1. LM317T
2. LM317L
3. KA317
4. L78S
5. UA7805
6. NTE956
7. ON Semiconductor MC7805
These alternatives function similarly, with some variations in package type and specifications. Always check the datasheet for exact compatibility with your application.
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