Texas Instruments

LM140K-5.0

LM140K-5.0 Description

The LM140K-5.0 from Texas Instruments is a robust fixed 5V linear voltage regulator designed to deliver a stable 1A output current with an input voltage range up to 35V. Housed in a durable TO-3 package, this regulator is engineered for high-reliability applications requiring precise voltage regulation. It features a low dropout voltage of 2V at 1A, ensuring efficient operation even under high load conditions. With a quiescent current of 6 mA and exceptional 80dB PSRR (120Hz), the LM140K-5.0 minimizes power dissipation and noise, making it ideal for sensitive electronic systems. Its over-temperature and short-circuit protection safeguards against fault conditions, enhancing system longevity.

LM140K-5.0 Features

• Fixed 5V Output: Provides a stable, precision-regulated voltage for consistent performance.
• High Input Voltage Tolerance: Supports up to 35V, accommodating a wide range of power sources.
• Low Dropout Voltage: 2V at 1A ensures efficient operation under heavy loads.
• High PSRR (80dB at 120Hz): Superior noise rejection for clean power delivery in sensitive circuits.
• Robust Protection: Includes over-temperature and short-circuit protection for enhanced reliability.
• TO-3 Package: Durable through-hole mounting suitable for industrial environments.
• RoHS3 Compliant & REACH Unaffected: Meets stringent environmental and safety standards.

LM140K-5.0 Applications

The LM140K-5.0 is ideal for applications demanding high-current, low-noise voltage regulation, including:

• Industrial Control Systems: Powering microcontrollers, sensors, and actuators.
• Automotive Electronics: Voltage stabilization for infotainment and control modules.
• Test & Measurement Equipment: Ensuring precision in analog and digital circuits.
• Power Supplies: As a post-regulator in switch-mode power supplies (SMPS) for cleaner output.
• Retro Computing & Legacy Systems: Reliable 5V regulation for vintage electronics.

Conclusion of LM140K-5.0

The LM140K-5.0 stands out as a high-performance linear regulator, combining high current capability, low dropout, and exceptional noise immunity. Its rugged TO-3 package and integrated protection features make it a preferred choice for industrial, automotive, and precision electronics. For engineers seeking a reliable, long-lasting 5V regulator, the LM140K-5.0 delivers unmatched stability and efficiency in demanding environments.