STMicroelectronics

L4931CPT50-TR

L4931CPT50-TR Description

The L4931CPT50-TR is a linear voltage regulator designed by STMicroelectronics, a leading manufacturer in the field of power management integrated circuits (PMIC). This device is part of the L4931 series and is known for its fixed output voltage of 5V and a maximum output current of 250mA. It is housed in a PPAK package, which is ideal for surface mount applications, providing a compact and robust solution for various electronic designs. Despite being marked as obsolete, the L4931CPT50-TR remains a reliable choice for applications requiring a stable power supply with minimal voltage dropout and excellent power supply rejection ratio (PSRR).

L4931CPT50-TR Features

• Fixed Output Voltage: The L4931CPT50-TR provides a stable 5V output voltage, ensuring consistent power supply to connected devices.
• High Efficiency: With a maximum voltage dropout of 0.8V at 250mA, this regulator efficiently converts input voltage to the desired output, minimizing power loss.
• Low Quiescent Current: The device operates with a quiescent current of just 1mA, making it suitable for low-power applications where energy efficiency is crucial.
• Protection Features: Over-current and over-temperature protection ensure the longevity and reliability of the device, safeguarding it against potential damage from excessive current or heat.
• High PSRR: The regulator boasts a power supply rejection ratio of 70dB at 120Hz and 55dB at 10kHz, effectively filtering out noise from the input voltage and providing a clean output signal.
• Compact PPAK Package: The surface mount PPAK package is ideal for space-constrained designs, offering a durable and reliable solution for various electronic applications.
• Compliance: The L4931CPT50-TR is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards for electronic components.

L4931CPT50-TR Applications

The L4931CPT50-TR is well-suited for a variety of applications where a stable 5V power supply is required. Its low dropout voltage and high PSRR make it particularly useful in applications such as:

• Consumer Electronics: Ideal for powering small devices like USB peripherals, where a stable and efficient power supply is essential.
• Industrial Equipment: Suitable for low-power industrial sensors and controllers that require a reliable and noise-free power source.
• Telecommunications: Can be used in low-power communication modules and IoT devices where energy efficiency and reliability are critical.
• Medical Devices: Applicable in portable medical devices that demand a stable power supply and low noise levels to ensure accurate measurements and operations.

Conclusion of L4931CPT50-TR

The L4931CPT50-TR is a robust and reliable linear voltage regulator that offers a stable 5V output with a maximum current of 250mA. Its low dropout voltage, high PSRR, and compact PPAK package make it an ideal choice for a wide range of applications, from consumer electronics to industrial and medical devices. Despite being marked as obsolete, the L4931CPT50-TR remains a viable option for designers seeking a dependable and efficient power management solution. Its compliance with environmental and safety standards further enhances its suitability for modern electronic designs.