Texas Instruments

LM340T-15  

Linear & Switching Voltage Regulators

LM340T-15 Description

The LM340T-15 is a fixed positive linear voltage regulator designed to provide a stable 15V output with a maximum current capacity of 1.5A. Manufactured by Texas Instruments, this regulator is part of the LM340 series, known for its reliability and performance in various electronic applications. The LM340T-15 features a maximum input voltage of 35V and operates within a temperature range of 0°C to 125°C, making it suitable for a wide range of industrial and consumer applications.

LM340T-15 Features

• Fixed Output Voltage: The LM340T-15 provides a fixed 15V output, ensuring consistent power supply to connected devices.
• High Current Capability: With a maximum output current of 1.5A, this regulator can handle higher load requirements, making it ideal for applications that demand significant power.
• Low Dropout Voltage: The maximum dropout voltage of 2V at 1A ensures efficient operation even when the input voltage is close to the output voltage.
• Protection Features: The LM340T-15 includes over-temperature and short-circuit protection, enhancing the reliability and longevity of the regulator.
• Low Quiescent Current: The regulator operates with a quiescent current of only 8 mA, minimizing power consumption during operation.
• High Power Supply Rejection Ratio (PSRR): With a PSRR of 80dB at 120Hz, the LM340T-15 effectively filters out noise from the input power supply, ensuring a clean output voltage.
• Through Hole Mounting: The through-hole mounting type facilitates easy integration into printed circuit boards (PCBs) and provides robust mechanical stability.
• Moisture Sensitivity Level (MSL): The MSL rating of 1 (Unlimited) indicates that the regulator is not sensitive to moisture, making it suitable for a variety of environmental conditions.
• Compliance and Packaging: The LM340T-15 is REACH Affected and packaged in a tube, ensuring compliance with industry standards and ease of handling.

LM340T-15 Applications

The LM340T-15 is well-suited for a variety of applications due to its robust performance and reliability. Some specific use cases include:

• Power Supply Units: Ideal for providing a stable 15V supply in power supply units for electronic devices.
• Industrial Equipment: Suitable for industrial applications where a reliable and efficient power supply is critical.
• Consumer Electronics: Can be used in consumer electronics that require a stable voltage source, such as amplifiers and other audio equipment.
• Telecommunications: Effective in telecom equipment where a consistent power supply is necessary for stable operation.
• Automotive Systems: Given its wide operating temperature range, the LM340T-15 can be used in automotive applications where temperature variations are common.

Conclusion of LM340T-15

The LM340T-15 is a versatile and reliable linear voltage regulator that offers a stable 15V output with a maximum current capacity of 1.5A. Its low dropout voltage, high PSRR, and protection features make it a superior choice over similar models. The through-hole mounting type and wide operating temperature range further enhance its usability in various applications. Whether used in power supply units, industrial equipment, or consumer electronics, the LM340T-15 ensures consistent and efficient power delivery.

LM340T-15 Documents

Download datasheets and manufacturer documentation for LM340T-15

PCN Assembly/Origin :

Mult Devices 12/Apr/2018      

Datasheets :

LM340, LM340A, LM7805      

PCN Obsolescence/ EOL :

EOL 18/Sept/2023