STMicroelectronics

L4931CD27-TR

L4931CD27-TR Description

The L4931CD27-TR is a linear voltage regulator designed by STMicroelectronics, offering a fixed output voltage of 2.7V and a maximum output current of 250mA. This regulator is housed in an 8SO surface-mount package, making it suitable for compact and space-constrained applications. Despite being marked as obsolete, the L4931CD27-TR remains a reliable choice for applications requiring a stable and efficient power supply.

L4931CD27-TR Features

• Output Type: Fixed, ensuring a stable 2.7V output voltage.
• Input Voltage Range: Capable of handling input voltages up to 20V, providing flexibility in power supply design.
• Output Current: Delivers a maximum output current of 250mA, suitable for low to medium power applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.8V at 250mA, the L4931CD27-TR maintains high efficiency even at low input-to-output voltage differentials.
• Protection Features: Includes over-current and over-temperature protection, enhancing reliability and safeguarding against potential faults.
• Power Supply Rejection Ratio (PSRR): Offers a PSRR of 74dB at 120Hz and 55dB at 10kHz, ensuring minimal noise and ripple in the output voltage.
• Quiescent Current: Features a low quiescent current of 1mA, contributing to high efficiency and reduced power consumption.
• Supply Current: Maximum supply current of 6mA, optimizing power usage in low-power systems.
• Package Type: Tape & Reel (TR) packaging ensures ease of handling and integration into automated assembly processes.
• Compliance: RoHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.

L4931CD27-TR Applications

The L4931CD27-TR is ideal for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices, consumer electronics, and industrial control systems. Specific use cases include:

• Battery-Powered Devices: The low dropout voltage ensures efficient operation even as battery voltage drops, extending device runtime.
• Consumer Electronics: Provides a stable power supply for devices such as smartphones, tablets, and portable gaming consoles.
• Industrial Control Systems: Ensures reliable power delivery for sensors, actuators, and microcontrollers in industrial environments.
• Medical Devices: Suitable for low-power medical equipment where stability and efficiency are critical.

Conclusion of L4931CD27-TR

The L4931CD27-TR is a robust and reliable linear voltage regulator, offering a fixed 2.7V output with a maximum current of 250mA. Its low dropout voltage, high PSRR, and comprehensive protection features make it an excellent choice for applications requiring stable and efficient power supply solutions. Despite its obsolete status, the L4931CD27-TR remains a valuable component for engineers and designers looking for a dependable regulator in compact, surface-mount form factor.