Texas Instruments

LM340SX-5.0

LM340SX-5.0 Description

The LM340SX-5.0 is a high-performance linear voltage regulator from Texas Instruments, designed to deliver a fixed output voltage of 5V with a maximum output current of 1.5A. This regulator is ideal for applications requiring a stable and reliable power supply within a wide input voltage range of up to 35V. The LM340SX-5.0 features a dropout voltage of 2V at 1A, ensuring efficient operation even under high load conditions. With a quiescent current of 8mA, it offers low power consumption, making it suitable for energy-sensitive applications. The regulator is housed in a surface-mount DDPAK/TO263-3 package, providing robust mechanical stability and thermal performance.

LM340SX-5.0 Features

• Fixed Output Voltage: The LM340SX-5.0 provides a stable 5V output, ensuring consistent power delivery to connected devices.
• High Input Voltage Range: Capable of handling input voltages up to 35V, this regulator is versatile and can be used in a variety of power supply scenarios.
• Low Dropout Voltage: With a maximum dropout voltage of 2V at 1A, the LM340SX-5.0 maintains high efficiency even under heavy load conditions.
• Low Quiescent Current: Consuming only 8mA in quiescent state, this regulator minimizes power loss and enhances overall system efficiency.
• High PSRR: The regulator boasts a Power Supply Rejection Ratio (PSRR) of 80dB at 120Hz, effectively filtering out noise and ripple from the input supply.
• Protection Features: Over-temperature and short-circuit protection ensure reliable operation and safeguard against potential damage.
• Surface-Mount Package: The DDPAK/TO263-3 package offers a compact and durable solution, suitable for surface-mount assembly processes.
• Wide Operating Temperature Range: The LM340SX-5.0 operates reliably within a temperature range of 0°C to 125°C, making it suitable for demanding industrial and automotive applications.

LM340SX-5.0 Applications

The LM340SX-5.0 is well-suited for a variety of applications where a stable and efficient power supply is critical. Some specific use cases include:

• Industrial Control Systems: Providing a reliable power source for PLCs, sensors, and actuators.
• Automotive Electronics: Powering ECUs, infotainment systems, and other automotive electronics.
• Telecommunications: Supplying power to base stations, routers, and other networking equipment.
• Consumer Electronics: Ideal for powering devices such as routers, set-top boxes, and other consumer appliances.
• Medical Devices: Ensuring stable power delivery to medical monitoring equipment and diagnostic devices.

Conclusion of LM340SX-5.0

The LM340SX-5.0 from Texas Instruments is a robust and efficient linear voltage regulator that offers a reliable power solution for a wide range of applications. Its combination of a fixed 5V output, high input voltage range, low dropout voltage, and low quiescent current make it an excellent choice for both industrial and consumer electronics. The inclusion of over-temperature and short-circuit protection features further enhances its reliability and durability. With its surface-mount package and wide operating temperature range, the LM340SX-5.0 is a versatile and efficient regulator that meets the demands of modern power management applications.