規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Not For New Designs |
| Output Configuration | Negative |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | -40V |
| Voltage - Output (Min/Fixed) | -1.2V |
| Voltage - Output (Max) | -37V |
| Current - Output | 1.5A |
| PSRR | 60dB (120Hz) |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
概述
Description
The LM337IMPX is a negative voltage regulator integrated circuit (IC) commonly used for voltage regulation in electronic devices. It is designed to deliver adjustable output voltages ranging from -1.2V to -37V, making it ideal for a variety of applications where negative voltages are needed, such as powering operational amplifiers and other analog circuits.
Housed in a surface-mount SOT-223 package, the LM337IMPX offers convenience for compact designs. It typically supports a maximum output current of 1.5A, with built-in current limiting and thermal overload protection to enhance reliability and safety in operation.
By using external resistors, users can easily set the desired output voltage. The device maintains excellent line and load regulation, ensuring stable performance across varying input and output conditions. Its dropout voltage is also relatively low, which helps in maintaining efficiency even when the input voltage is close to the desired output voltage.
The LM337IMPX is favored for its versatility, reliability, and ease of use in creating stable, adjustable negative voltage supplies in electronic circuits.
Housed in a surface-mount SOT-223 package, the LM337IMPX offers convenience for compact designs. It typically supports a maximum output current of 1.5A, with built-in current limiting and thermal overload protection to enhance reliability and safety in operation.
By using external resistors, users can easily set the desired output voltage. The device maintains excellent line and load regulation, ensuring stable performance across varying input and output conditions. Its dropout voltage is also relatively low, which helps in maintaining efficiency even when the input voltage is close to the desired output voltage.
The LM337IMPX is favored for its versatility, reliability, and ease of use in creating stable, adjustable negative voltage supplies in electronic circuits.
Equivalent
The LM337IMPX is a negative adjustable voltage regulator. Equivalent products include:
1. LT337 by Analog Devices
2. MC7905 series by ON Semiconductor
3. UA337 by Texas Instruments
4. L79xx series by STMicroelectronics
5. KA337 by Fairchild Semiconductor (now part of ON Semiconductor)
These equivalents offer similar features and can be used as replacements, but always check the datasheets for compatibility in your specific application.
1. LT337 by Analog Devices
2. MC7905 series by ON Semiconductor
3. UA337 by Texas Instruments
4. L79xx series by STMicroelectronics
5. KA337 by Fairchild Semiconductor (now part of ON Semiconductor)
These equivalents offer similar features and can be used as replacements, but always check the datasheets for compatibility in your specific application.
Features
The LM337IMPX is a three-terminal adjustable negative voltage regulator. Key features include:
1. Adjustable Output Voltage: It provides an adjustable output voltage range from -1.2V to -37V, making it versatile for various applications.
2. Current Capability: It can deliver output currents up to 1.5A with proper heat dissipation, suitable for medium-power applications.
3. Line and Load Regulation: The LM337IMPX offers excellent line and load regulation, ensuring stable output even with varying input and output conditions.
4. Thermal Overload Protection: It includes built-in protection against overheating, safeguarding the device from damage due to excessive temperatures.
5. Short-Circuit Protection: The regulator is protected against short circuits, enhancing its reliability in different operating environments.
6. Low Noise: It features low output noise, which is crucial for sensitive analog circuits.
7. Package Options: It is available in a surface-mount package, ideal for compact designs and automated assembly.
These features make the LM337IMPX suitable for use in power supply designs, adjustable voltage applications, and any scenario requiring a stable negative voltage source.
1. Adjustable Output Voltage: It provides an adjustable output voltage range from -1.2V to -37V, making it versatile for various applications.
2. Current Capability: It can deliver output currents up to 1.5A with proper heat dissipation, suitable for medium-power applications.
3. Line and Load Regulation: The LM337IMPX offers excellent line and load regulation, ensuring stable output even with varying input and output conditions.
4. Thermal Overload Protection: It includes built-in protection against overheating, safeguarding the device from damage due to excessive temperatures.
5. Short-Circuit Protection: The regulator is protected against short circuits, enhancing its reliability in different operating environments.
6. Low Noise: It features low output noise, which is crucial for sensitive analog circuits.
7. Package Options: It is available in a surface-mount package, ideal for compact designs and automated assembly.
These features make the LM337IMPX suitable for use in power supply designs, adjustable voltage applications, and any scenario requiring a stable negative voltage source.
Pinout
The LM337IMPX is a three-terminal adjustable negative voltage regulator. It typically comes in a SOT-223 package, which has three pins. The pin functions are as follows:
1. Input (Vin): This pin receives the input voltage, which should be more negative than the desired output voltage by at least 3V to maintain proper regulation.
2. Output (Vout): This pin provides the regulated output voltage, which can be adjusted using external resistors. The output voltage can be set anywhere from -1.2V to -37V.
3. Adjust (Adj): This pin is used to set the output voltage. By connecting resistors between the output and adjust pins, and from the adjust pin to ground, you can set the desired output voltage.
The LM337 is commonly used in various applications requiring stable negative voltage, such as power supplies and adjustable power circuits.
1. Input (Vin): This pin receives the input voltage, which should be more negative than the desired output voltage by at least 3V to maintain proper regulation.
2. Output (Vout): This pin provides the regulated output voltage, which can be adjusted using external resistors. The output voltage can be set anywhere from -1.2V to -37V.
3. Adjust (Adj): This pin is used to set the output voltage. By connecting resistors between the output and adjust pins, and from the adjust pin to ground, you can set the desired output voltage.
The LM337 is commonly used in various applications requiring stable negative voltage, such as power supplies and adjustable power circuits.
Manufacturer
The LM337IMPX is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and produces a wide range of electronic components and integrated circuits. Headquartered in Dallas, Texas, TI is one of the largest and most well-known companies in the semiconductor industry. They serve various markets, including industrial, automotive, personal electronics, and communications equipment. The company is known for its innovation and contributions to technological advancements, as well as its focus on analog and embedded processing products.
Application
The LM337IMPX is a negative voltage regulator commonly used for various applications. Its primary purpose is to provide a stable negative output voltage, making it ideal for use in power supply circuits. It is often employed in applications requiring a precise voltage regulation, such as in telecommunications, audio equipment, and instrumentation. The component is suitable for use in battery-powered devices, providing efficient power management. Additionally, it is utilized in industrial and consumer electronics where reliable voltage regulation is critical. The LM337IMPX is also found in applications that require negative voltage for biasing and reference voltage generation.
Package
The LM337IMPX is a low dropout voltage regulator with a package type of SOT-223. This package is designed for surface mounting on circuit boards, providing efficient heat dissipation and compactness for electronic applications.
