LM337T/NOPB

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LM337T/NOPB

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IC REG LIN NEG ADJ 1.5A TO220-3

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Attribut Wert
Package / Case Bulk
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 1.5A
PSRR 77dB (120Hz)
Protection Features Over Temperature, Short Circuit
Operating Temperature 0°C ~ 125°C
Mounting Type Through Hole

Übersicht

Description

The LM337T/NOPB is an adjustable negative voltage regulator commonly used in electronic circuits to provide a stable and precise output voltage. Manufactured by Texas Instruments, it allows for an output voltage range of -1.2V to -37V with a maximum output current of 1.5A. The device is designed to provide easy regulation of negative voltages, making it suitable for a variety of applications such as power supplies, battery chargers, and systems requiring adjustable negative voltage rails.
Key features include internal current limiting, thermal shutdown, and safe area compensation, which enhance the reliability and safety of the device. Its TO-220 package enables efficient heat dissipation, and its straightforward design requires only two external resistors to set the output voltage. The "NOPB" suffix indicates that the device is RoHS compliant, meaning it is free of lead and other hazardous substances. Overall, the LM337T/NOPB offers a versatile, reliable solution for negative voltage regulation needs in electronic projects.

Equivalent

The LM337T/NOPB is a negative voltage regulator. Equivalent products include:
1. L7912 - A negative voltage regulator by STMicroelectronics.
2. MC7912 - A similar part by ON Semiconductor.
3. KA7912 - Offered by Fairchild Semiconductor.
4. NTE1912 - NTE Electronics' equivalent.
5. L79L12 - By STMicroelectronics, suitable for lower current applications.
These alternatives generally conform to the same voltage regulation specifications as the LM337T/NOPB, but always verify exact specifications and pin configurations before use.

Features

The LM337T/NOPB is an adjustable negative voltage regulator designed for a wide range of applications. Key features include:
1. Output Voltage Range: It allows for an adjustable output voltage from -1.2V to -37V, making it versatile for various applications.
2. Output Current: It can deliver a continuous load current of up to 1.5A.
3. Thermal Overload Protection: This feature safeguards the regulator against excessive junction temperatures.
4. Short-Circuit Protection: It includes robust protection against output short circuits.
5. Safe Operating Area Protection: Ensures stable performance across the operating range without risk of damage.
6. Low Output Voltage: Provides a low dropout voltage, typically around 3V at full load current.
7. Reliable Performance: Offers high performance with low noise and excellent ripple rejection (typically 77 dB).
8. TO-220 Package: The LM337T comes in a TO-220 package, which is suitable for mounting on a heat sink to enhance thermal management.
These features make the LM337T/NOPB suitable for use in power supply circuits, battery chargers, and other electronic devices requiring negative voltage regulation.

Pinout

The LM337T/NOPB is a three-terminal adjustable negative voltage regulator. It is commonly used to provide a stable negative output voltage that is adjustable over a range of -1.2V to -37V. The device has the following pin configuration:
1. Input (Vin): This pin receives the negative input voltage, which should be at least 3V more negative than the desired output voltage.
2. Output (Vout): This pin provides the regulated negative output voltage. The output voltage is adjusted by connecting a resistor divider between the output and adjust pins.
3. Adjust (Adj): This pin is used to set the output voltage. By connecting a resistor between the output and the adjust pin, and another resistor from the adjust pin to ground, the output voltage can be varied.
The LM337T/NOPB is designed for negative voltage regulation applications and is commonly used in power supplies and adjustable voltage outputs. It provides features such as current limiting, thermal overload protection, and safe area compensation to ensure reliable performance across various operating conditions.

Manufacturer

The LM337T/NOPB is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and manufactures a variety of analog and embedded processing chips. It is one of the largest and most well-known companies in the semiconductor industry. TI's products are used in a wide range of electronic applications, including consumer electronics, automotive systems, industrial equipment, and communications. The company is known for its innovation and extensive portfolio of integrated circuits, microcontrollers, and development tools. Texas Instruments is headquartered in Dallas, Texas, and operates worldwide, serving a diverse customer base.

Application

The LM337T/NOPB is a versatile adjustable negative voltage regulator commonly used in various applications. These include power supply designs for electronic circuits requiring a stable and adjustable negative voltage, such as operational amplifiers, analog circuits, and communication equipment. It is also used in battery chargers, voltage regulation for microcontrollers, and any systems where a negative voltage is needed for biasing purposes. Its ability to provide a wide range of output voltages makes it suitable for custom power supply solutions in consumer electronics, industrial automation, and instrumentation systems. The LM337T/NOPB's reliability and simplicity make it a popular choice for both hobbyist and professional projects.

Package

The LM337T/NOPB is a negative voltage regulator with a TO-220 package type. This package is commonly used for power semiconductors, allowing for effective heat dissipation due to its metal tab, which can be attached to a heat sink.

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