STMicroelectronics

LF50CPT

LF50CPT Description

The LF50CPT is a linear voltage regulator designed by STMicroelectronics, offering a fixed 5V output voltage with a maximum output current of 500mA. This regulator is housed in a PPAK package, making it suitable for surface-mount applications. Despite its small form factor, the LF50CPT delivers robust performance with a maximum input voltage of 16V and a dropout voltage of 0.7V at 500mA. It features low quiescent current (1mA) and excellent power supply rejection ratio (PSRR) ranging from 76dB at 120Hz to 60dB at 10kHz. The LF50CPT also includes protection features such as over-current and over-temperature protection, ensuring reliable operation under various conditions. Although the product is now obsolete, its unique combination of features makes it a valuable component for specific applications.

LF50CPT Features

• Fixed Output Voltage: The LF50CPT provides a stable 5V output voltage, ideal for applications requiring a consistent power supply.
• High Efficiency: With a dropout voltage of 0.7V at 500mA, the regulator maintains high efficiency even under heavy load conditions.
• Low Quiescent Current: The regulator consumes only 1mA in quiescent state, making it suitable for low-power applications.
• Protection Features: Over-current and over-temperature protection ensure the regulator's longevity and reliability.
• Enable Control: The LF50CPT includes an enable feature, allowing users to control the regulator's operation dynamically.
• Surface Mount Package: The PPAK package is designed for surface-mount technology, facilitating easy integration into compact designs.
• Compliance: The LF50CPT is REACH unaffected and ROHS3 compliant, meeting environmental and safety standards.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the regulator is suitable for a wide range of environmental conditions.

LF50CPT Applications

The LF50CPT is well-suited for a variety of applications where a stable 5V power supply is required. Its low dropout voltage and high efficiency make it ideal for battery-powered devices, where maintaining high efficiency is crucial. The regulator's low quiescent current is particularly beneficial for applications that need to conserve power, such as portable electronics and IoT devices. The enable feature allows for dynamic control, making the LF50CPT suitable for systems that require power management. Additionally, its robust protection features ensure reliable operation in industrial and automotive applications.

Conclusion of LF50CPT

The LF50CPT from STMicroelectronics is a versatile linear voltage regulator that offers a stable 5V output with a maximum current of 500mA. Its low dropout voltage and low quiescent current make it an efficient choice for a variety of applications, particularly those requiring power conservation. The regulator's protection features and enable control enhance its reliability and flexibility. Despite being obsolete, the LF50CPT remains a valuable component for specific use cases, especially in industries where its unique combination of features is still highly sought after.