LD1117S25TR 2.5V Linear Voltage Regulator - STMicroelectronics
- Brand: STMicroelectronics
- Product Code: LD1117S25TR
- Availability: In Stock
$0.11
- Ex Tax: $0.11
LD1117S25TR: High-Performance Linear Voltage Regulation for Modern Electronics
In the ever-evolving landscape of electronic design, the LD1117S25TR from STMicroelectronics emerges as a reliable solution for engineers seeking precision and stability in power management systems. This low-dropout linear regulator (LDO) delivers a fixed 2.5V output voltage with exceptional efficiency, making it an indispensable component for applications ranging from industrial control systems to consumer electronics and automotive circuits. Designed for performance-critical environments, the LD1117S25TR combines advanced protection features with a compact SOT-223 package to ensure optimal functionality across diverse operating conditions.
Technical Excellence in Voltage Regulation
At its core, the LD1117S25TR exemplifies cutting-edge voltage regulation technology. With a maximum input voltage rating of 15V and a dropout voltage of just 1.2V at full 800mA load, this device maintains stable output even under fluctuating power supply conditions. Its 10mA quiescent current ensures minimal power consumption during standby modes, while the 75dB PSRR (Power Supply Rejection Ratio) at 120Hz effectively suppresses input noise, delivering clean and stable voltage to sensitive downstream components. The integrated over-temperature and over-current protection mechanisms provide an additional layer of reliability, preventing damage from thermal runaway or electrical faults.
Engineered for surface-mount applications, the SOT-223 package offers excellent thermal dissipation characteristics while maintaining a footprint suitable for space-constrained designs. Operating across an industrial temperature range of 0°C to 125°C, this regulator demonstrates consistent performance in harsh environments where thermal stability is paramount. The device's fixed output configuration simplifies implementation while maintaining ±2% output accuracy, eliminating the need for external resistor dividers in most applications.
| Parameter | Specification |
|---|---|
| Output Voltage | 2.5V (Fixed) |
| Max Output Current | 800mA |
| Max Input Voltage | 15V |
| Dropout Voltage | 1.2V @ 800mA |
| PSRR | 75dB (120Hz) |
| Operating Temperature | 0°C to 125°C |
Applications Across Industries
The LD1117S25TR's versatility makes it particularly valuable in three key sectors: industrial automation, consumer electronics, and automotive systems. In industrial environments, its robust protection features and wide operating temperature range ensure reliable performance in programmable logic controllers (PLCs) and sensor interfaces. Consumer electronics manufacturers benefit from its compact size and low quiescent current in portable devices like wearables and IoT gateways, where battery life optimization is critical. Automotive applications leverage its thermal stability for in-vehicle infotainment systems and advanced driver assistance systems (ADAS), where consistent voltage regulation is essential for safety-critical components.
Design engineers appreciate the device's inherent simplicity in implementation while maintaining exceptional performance characteristics. The absence of external compensation components reduces bill-of-materials costs and minimizes PCB real estate requirements. When compared to switching regulators, the LD1117S25TR offers superior noise performance and reduced electromagnetic interference (EMI), making it ideal for analog circuits, RF modules, and precision measurement instruments.
Tags: Voltage Regulation, Power Management, SOT223 Package, Industrial Electronics, Automotive Components