LM337KTTR

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LM337KTTR

IC REG LINEAR NEG ADJ 1.5A TO263

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規格

Part Status Active
Base Product Number LM337
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 Surface Mount
Package TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
Supplier Device Package TO-263 (DDPAK-3)
Packaging Cut Tape (CT), Tape & Reel (TR)

概述

Description

The LM337KTTR is a versatile three-terminal adjustable voltage regulator designed to supply a constant negative output voltage. Manufactured by various semiconductor companies, it is capable of delivering an output voltage range of -1.2V to -37V, with a typical output current of up to 1.5A. This regulator is widely used in electronic circuits for its ability to provide a stable and adjustable output voltage, making it ideal for power supply designs where precise voltage control is necessary.
The device features thermal regulation, current limiting, and safe area protection, which enhance its reliability and performance under varying load conditions. The LM337KTTR is commonly housed in a TO-220 package, providing a robust and easy-to-mount solution for various applications.
In summary, the LM337KTTR is essential for applications requiring adjustable and stable negative voltage outputs, offering flexibility and reliability in power regulation tasks. It is widely used in industrial, consumer, and telecommunications equipment for its efficiency and robust performance.

Features

The LM337KTTR is an adjustable negative voltage regulator with several key features. It offers an output voltage range of -1.2V to -37V, making it versatile for various applications. The device can deliver a maximum output current of 1.5A, suitable for moderate power applications. It includes inherent current limiting, thermal overload protection, and safe area compensation, enhancing its reliability and safety in use.
The regulator exhibits a dropout voltage of approximately 3V, ensuring efficient performance in circuits where the input voltage is close to the desired output voltage. The LM337KTTR is available in a TO-263 surface-mount package, facilitating space-saving designs and ease of integration onto PCBs.
Its adjustable output is achieved using two external resistors, allowing for flexibility in setting the desired output voltage. These features make the LM337KTTR an efficient solution for power supply designs, negative voltage regulation, and various electronic projects requiring stable negative voltage levels.

Package

The LM337KTTR is a negative voltage regulator from Texas Instruments, typically supplied in a TO-263 surface-mount package. This package type facilitates efficient heat dissipation and is suitable for surface-mount technology (SMT) applications, making it ideal for compact electronic designs.

Pinout

The LM337KTTR is an adjustable negative voltage regulator. It typically comes in a TO-220 package, which has 3 pins. The pin functions are as follows:
1. Input (Pin 1): This pin takes the unregulated negative voltage input.
2. Output (Pin 2): This pin provides the regulated negative voltage output.
3. Adjust (Pin 3): This pin is used to set the output voltage via an external resistor network.
The LM337 allows you to set the output voltage to a desired level by adjusting the resistance between the adjust pin and the output pin. It is commonly used in power supply designs to provide a stable output voltage across varying load conditions.

Manufacturer

The LM337KTTR is manufactured by Texas Instruments. Texas Instruments is a multinational technology company that designs and manufactures semiconductors and various integrated circuits. It is one of the top companies in the semiconductor industry, known for its innovation and development of analog chips, embedded processors, and other electronic components. Texas Instruments serves a broad range of industries, including automotive, industrial, personal electronics, and communications.

Application

The LM337KTTR is a negative voltage regulator used in applications requiring adjustable output voltage. It is commonly employed in power supply designs to provide stable and precise negative voltage outputs, useful in:
1. Telecommunications equipment for stable power supply.
2. Industrial control systems for voltage regulation.
3. Laboratory power supplies for adjustable voltage needs.
4. Battery-powered devices requiring efficient power management.
5. Audio equipment for noise reduction and consistent power delivery.
Its primary advantage is its ability to maintain a constant output voltage despite variations in input voltage or load conditions.

Equivalent

The LM337KTTR is a negative adjustable voltage regulator. Equivalent products include:
1. UA79M33CKCS from Texas Instruments
2. LM337T from ON Semiconductor
3. L7905CV from STMicroelectronics
4. MC7905CT from ON Semiconductor
These equivalents offer similar functionality and specifications, allowing for interchangeable use in circuits requiring negative voltage regulation. Always ensure compatibility with your specific application requirements before substituting.

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