STMicroelectronics

L4931CD25-TR

L4931CD25-TR Description

The L4931CD25-TR is a fixed-output linear regulator designed by STMicroelectronics, a leading manufacturer in the field of power management integrated circuits (PMIC). This regulator is part of the L4931 family and is specifically tailored for applications requiring a stable 2.5V output voltage with a maximum output current of 250mA. The device is housed in an 8SO package and is available in a surface-mount configuration, making it suitable for compact and efficient PCB designs.

L4931CD25-TR Features

• Output Type: Fixed, ensuring a stable 2.5V output voltage.
• Input Voltage Range: Capable of handling input voltages up to 20V, providing flexibility in power supply options.
• Output Current: Delivers a maximum output current of 250mA, ideal for low to medium power applications.
• Number of Regulators: Features a single regulator, simplifying design and reducing component count.
• Output Configuration: Positive output voltage, suitable for a wide range of electronic circuits.
• Supply Current: Maximum supply current of 6mA, ensuring efficient power usage.
• Dropout Voltage: Low dropout voltage of 0.8V at 250mA, enhancing performance under low input voltage conditions.
• Quiescent Current: Low quiescent current of 1mA, contributing to high efficiency in standby mode.
• Power Supply Rejection Ratio (PSRR): Ranges from 75dB to 55dB across frequencies from 120Hz to 10kHz, ensuring excellent noise rejection and stable output.
• Protection Features: Includes over-current and over-temperature protection, safeguarding the device and connected components from damage.
• Compliance: REACH unaffected and ROHS3 compliant, ensuring environmental safety and regulatory adherence.
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited), suitable for various manufacturing environments.
• Packaging: Available in tape and reel (TR) format, facilitating automated assembly processes.

L4931CD25-TR Applications

The L4931CD25-TR is well-suited for a variety of applications where a stable and efficient power supply is crucial. Its fixed 2.5V output and 250mA current capability make it ideal for:

• Consumer Electronics: Powering low-power devices such as smartphones, tablets, and wearable technology.
• Industrial Equipment: Providing stable power to sensors, actuators, and control systems.
• Communication Devices: Ensuring reliable power supply for routers, modems, and other networking equipment.
• Automotive Electronics: Suitable for in-vehicle infotainment systems and electronic control units (ECUs).
• Medical Devices: Powering portable medical devices and diagnostic equipment where precision and reliability are paramount.

Conclusion of L4931CD25-TR

The L4931CD25-TR from STMicroelectronics is a robust and efficient linear regulator designed for applications requiring a fixed 2.5V output and up to 250mA of current. Its low dropout voltage, high PSRR, and comprehensive protection features make it a reliable choice for a wide range of electronic systems. Despite being marked as obsolete, the L4931CD25-TR remains a viable option for legacy systems and new designs where its specific attributes are required. Its compliance with REACH and ROHS3 standards ensures it meets environmental and regulatory requirements, making it a responsible choice for modern electronics.