LD2981ABU50TR Linear Voltage Regulator - 5V Output, 100mA, SOT-89-3
- Brand: STMicroelectronics
- Product Code: LD2981ABU50TR
- Availability: In Stock
$0.18
- Ex Tax: $0.18
Precision Power Management with LD2981ABU50TR Linear Regulator
Engineered for reliability and efficiency, the LD2981ABU50TR linear voltage regulator from STMicroelectronics delivers precise 5V output regulation in compact SOT-89-3 packaging. This fixed-output regulator combines low dropout voltage with advanced protection features, making it ideal for space-constrained applications requiring stable power delivery.
Key Performance Characteristics
Operating with a maximum input voltage of 16V, this regulator maintains a rock-solid 5V output while featuring an ultra-low dropout voltage of just 0.375V at 100mA load current. Its 63dB PSRR (Power Supply Rejection Ratio) at 1kHz ensures clean output voltage even with fluctuating input sources, while the 150µA quiescent current optimizes energy efficiency.
| Parameter | Specification |
|---|---|
| Output Voltage | 5V Fixed |
| Max Input Voltage | 16V |
| Output Current | 100mA |
| Dropout Voltage | 0.375V @ 100mA |
| Operating Temp | -40°C to 125°C |
Robust Design for Demanding Applications
Designed with industrial-grade reliability, this linear regulator incorporates comprehensive protection mechanisms including over-current and over-temperature safeguards. The surface-mount SOT-89-3 package enables seamless integration in modern electronics while maintaining thermal stability across extreme operating conditions.
With its combination of precision regulation, low quiescent current (2.6mA max), and high-temperature tolerance, the LD2981ABU50TR excels in battery-powered devices, portable instrumentation, and embedded systems requiring clean 5V power rails. The device's active status and tape & reel packaging make it well-suited for high-volume production environments.
This next-generation linear regulator bridges the gap between performance and compact design, offering engineers a trusted solution for voltage regulation challenges in telecommunications equipment, industrial control systems, and consumer electronics applications.
Tags: Linear Voltage Regulator, 5V Fixed Output, Low Dropout IC, Surface Mount Regulator, Industrial Power Solutions