仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| 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 | 100mA |
| PSRR | 60dB (120Hz) |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | -25°C ~ 125°C |
| Mounting Type | Surface Mount |
概要
Description
The LM337LMX/NOPB is a popular adjustable negative voltage regulator used in a variety of electronic applications. It is capable of delivering output voltages ranging from -1.2V to -37V, with a maximum current output of 0.5A. This regulator is part of the LM337 series, known for its reliability and ease of use in linear power supply designs.
The LM337LMX/NOPB features thermal overload protection, current limiting, and safe area compensation, making it robust against adverse operating conditions. It typically requires only two external resistors to set the output voltage and can be paired with capacitors to improve transient response.
The device is available in a TO-252 or SOT-223 package, making it suitable for surface mount applications. Its versatility and stability make it an ideal choice for applications requiring a stable negative voltage rail, such as operational amplifier power supplies or data acquisition systems. The LM337LMX/NOPB is lead-free and RoHS compliant, ensuring it meets environmental safety standards.
The LM337LMX/NOPB features thermal overload protection, current limiting, and safe area compensation, making it robust against adverse operating conditions. It typically requires only two external resistors to set the output voltage and can be paired with capacitors to improve transient response.
The device is available in a TO-252 or SOT-223 package, making it suitable for surface mount applications. Its versatility and stability make it an ideal choice for applications requiring a stable negative voltage rail, such as operational amplifier power supplies or data acquisition systems. The LM337LMX/NOPB is lead-free and RoHS compliant, ensuring it meets environmental safety standards.
Equivalent
The LM337LMX/NOPB is a negative adjustable voltage regulator. Equivalent products include:
1. L79xx Series - Examples: L7912, L7915 by STMicroelectronics.
2. MC79xx Series - Examples: MC7912, MC7915 by ON Semiconductor.
3. TL79xx Series - Examples: TL7912, TL7915 by Texas Instruments.
4. UA79xx Series - Examples: UA7912, UA7915 by Texas Instruments.
These products offer similar functionality in adjustable voltage regulation for negative voltages. Always verify specific application requirements when selecting an equivalent.
1. L79xx Series - Examples: L7912, L7915 by STMicroelectronics.
2. MC79xx Series - Examples: MC7912, MC7915 by ON Semiconductor.
3. TL79xx Series - Examples: TL7912, TL7915 by Texas Instruments.
4. UA79xx Series - Examples: UA7912, UA7915 by Texas Instruments.
These products offer similar functionality in adjustable voltage regulation for negative voltages. Always verify specific application requirements when selecting an equivalent.
Features
The LM337LMX/NOPB is a versatile negative voltage regulator. Key features include:
1. Adjustable Output Voltage: It provides an adjustable output range from -1.2V to -37V, accommodating various application needs.
2. Output Current Capability: The device can supply up to 1.5A of output current, suitable for medium power applications.
3. Thermal Regulation: It includes internal thermal overload protection, ensuring reliability under high temperature conditions.
4. Current Limiting: The regulator features current limiting to protect against overcurrent conditions.
5. Safe Operating Area Protection: This feature prevents the device from operating outside its intended limits, enhancing durability.
6. Low Output Noise: The design ensures low noise on the output voltage, improving the performance in sensitive applications.
7. Load and Line Regulation: It offers excellent load and line regulation, maintaining stable output under varying loads and input voltages.
8. Standard Package: Offered in a TO-220 package, which facilitates easy mounting and heat dissipation.
These features make the LM337LMX/NOPB suitable for a wide range of applications requiring stable negative voltage regulation.
1. Adjustable Output Voltage: It provides an adjustable output range from -1.2V to -37V, accommodating various application needs.
2. Output Current Capability: The device can supply up to 1.5A of output current, suitable for medium power applications.
3. Thermal Regulation: It includes internal thermal overload protection, ensuring reliability under high temperature conditions.
4. Current Limiting: The regulator features current limiting to protect against overcurrent conditions.
5. Safe Operating Area Protection: This feature prevents the device from operating outside its intended limits, enhancing durability.
6. Low Output Noise: The design ensures low noise on the output voltage, improving the performance in sensitive applications.
7. Load and Line Regulation: It offers excellent load and line regulation, maintaining stable output under varying loads and input voltages.
8. Standard Package: Offered in a TO-220 package, which facilitates easy mounting and heat dissipation.
These features make the LM337LMX/NOPB suitable for a wide range of applications requiring stable negative voltage regulation.
Pinout
The LM337LMX/NOPB is a negative voltage regulator with a three-pin configuration. Its primary function is to provide a stable negative output voltage, adjustable between -1.2V to -37V, with a maximum output current of 1.5A. The three pins are:
1. Input (In): This pin is connected to the unregulated negative voltage input.
2. Output (Out): This pin provides the regulated negative voltage output.
3. Adjust (Adj): This pin is used to adjust the output voltage. By connecting it to a pair of resistors, you can set the desired output voltage level.
The LM337 is commonly used in power supply applications where negative voltage regulation is required, ensuring reliable performance by maintaining a consistent output despite variations in input voltage or load conditions.
1. Input (In): This pin is connected to the unregulated negative voltage input.
2. Output (Out): This pin provides the regulated negative voltage output.
3. Adjust (Adj): This pin is used to adjust the output voltage. By connecting it to a pair of resistors, you can set the desired output voltage level.
The LM337 is commonly used in power supply applications where negative voltage regulation is required, ensuring reliable performance by maintaining a consistent output despite variations in input voltage or load conditions.
Manufacturer
The LM337LMX/NOPB is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide array of analog and embedded processing chips. The company is well-known for its innovation in developing components that facilitate the design of complex, high-performance electronic systems. TI's products are used in a wide range of applications, including industrial, automotive, personal electronics, communications equipment, and enterprise systems. As a leader in the semiconductor industry, Texas Instruments focuses on quality and reliability, ensuring that its products meet the rigorous standards needed for various technological applications.
Application
The LM337LMX/NOPB is a negative voltage regulator used in various applications requiring a stable and adjustable negative voltage supply. Key application areas include:
1. Power Supply Design: Used in adjustable power supplies for providing a constant negative voltage output.
2. Battery Chargers: Ensures stable voltage output for battery charging circuits.
3. Telecommunications: Used in telecom equipment for voltage regulation.
4. Industrial Automation: Deployed in control systems and instrumentation requiring negative voltage regulation.
5. Consumer Electronics: Powers audio amplifiers and other consumer devices.
6. Test Equipment: Ensures precise voltage control in measurement and testing instruments.
Its versatility makes it suitable for any application requiring a reliable negative voltage source.
1. Power Supply Design: Used in adjustable power supplies for providing a constant negative voltage output.
2. Battery Chargers: Ensures stable voltage output for battery charging circuits.
3. Telecommunications: Used in telecom equipment for voltage regulation.
4. Industrial Automation: Deployed in control systems and instrumentation requiring negative voltage regulation.
5. Consumer Electronics: Powers audio amplifiers and other consumer devices.
6. Test Equipment: Ensures precise voltage control in measurement and testing instruments.
Its versatility makes it suitable for any application requiring a reliable negative voltage source.
Package
The LM337LMX/NOPB is a voltage regulator package available in a TO-252 surface-mount package. This package type, also known as DPAK, is commonly used for power devices needing heat dissipation with a compact footprint.
