LD2981CU50TR LDO Regulator – 5V 100mA Ultra-Low Dropout Linear Regulator, High PSRR, SOT23-5

The LD2981CU50TR is a low-dropout linear regulator providing a fixed 5V output with excellent noise performance and high power supply rejection ratio. Designed by STMicroelectronics, it is optimized for portable and noise-sensitive electronics.

Its low dropout voltage and low quiescent current enable efficient operation in battery-powered systems while maintaining stable output regulation.

Key Specifications

• Output Voltage: 5V

• Output Current: 100mA

• Dropout Voltage: Low

• Package: SOT23-5

Applications

• Portable electronics

• RF circuits

• Microcontroller power rails

• Battery-powered devices

Features

• Low dropout voltage

• High PSRR

• Low quiescent current

• Stable output