STMicroelectronics

LD2981CU50TR  

Linear & Switching Voltage Regulators

LD2981CU50TR Description

The LD2981CU50TR from STMicroelectronics is a low-dropout (LDO) linear voltage regulator designed to deliver a fixed 5V output with a maximum current of 100mA. It operates with an input voltage range up to 16V, making it suitable for a variety of power supply applications. The device features a low dropout voltage of 0.375V @ 100mA, ensuring efficient performance even with minimal headroom. With a quiescent current of just 150 µA and a supply current of 2.6 mA (max), it is optimized for power-sensitive designs. The regulator is housed in a compact SOT89-3 package and is available in Tape & Reel (TR) for automated assembly.

LD2981CU50TR Features

• Fixed 5V Output: Stable and precise voltage regulation for sensitive electronics.
• Low Dropout Voltage: 0.375V @ 100mA ensures efficiency in low-input scenarios.
• Low Quiescent Current: 150 µA minimizes power loss in standby/battery-operated systems.
• High PSRR: 63dB @ 1kHz for superior noise rejection in noisy environments.
• Robust Protection: Includes over-current and over-temperature safeguards.
• Wide Input Range: Supports up to 16V, accommodating various power sources.
• Compact & Reliable: SOT89-3 package with MSL1 (Unlimited) moisture sensitivity, ideal for space-constrained designs.
• Compliance: ROHS3 and REACH compliant, meeting environmental standards.

LD2981CU50TR Applications

• Battery-Powered Devices: Ideal for portable electronics due to low Iq and dropout.
• Industrial Control Systems: Reliable voltage regulation for sensors and microcontrollers.
• Automotive Electronics: Stable 5V supply for infotainment or low-power modules.
• Consumer Electronics: Used in smart home devices, wearables, and IoT applications.
• Medical Devices: Precision power management for diagnostic and monitoring equipment.

Conclusion of LD2981CU50TR

The LD2981CU50TR stands out as a high-performance LDO regulator, combining low power consumption, high PSRR, and robust protection in a compact form factor. Its wide input range and low dropout make it versatile for battery-operated and industrial applications. With STMicroelectronics' reliability and compliance with environmental standards, this regulator is an excellent choice for designers seeking efficiency and durability in power management solutions.

LD2981CU50TR Documents

Download datasheets and manufacturer documentation for LD2981CU50TR

Datasheets :

LD2981(AB,C)xx      

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HTML Datasheet :

LD2981(AB,C)xx