LD1117DT50CTR Linear Voltage Regulator - 5V 800mA DPAK

High-Performance Linear Voltage Regulation for Modern Electronics

The LD1117DT50CTR from STMicroelectronics represents a new standard in linear voltage regulation technology, combining precision engineering with robust performance characteristics. This fixed-output 5V regulator delivers up to 800mA of continuous current while maintaining exceptional stability across diverse operating conditions, making it an ideal solution for power-sensitive applications in industrial, automotive, and consumer electronics sectors.

Advanced Technical Specifications

Engineered with STMicroelectronics' proprietary VIP™ (Vertical Integration Process) technology, this linear regulator achieves remarkable efficiency through its ultra-low dropout voltage of just 1.3V at maximum load. The TO-252-3 DPAK package combines compact surface-mount design with excellent thermal dissipation capabilities, enabling reliable operation in harsh environments. Key performance metrics include:

Comprehensive Protection Architecture

Designed for mission-critical applications, the LD1117DT50CTR incorporates multiple protection mechanisms that ensure long-term reliability. The integrated over-temperature protection circuitry automatically reduces output current when thermal limits are approached, while the built-in over-current protection prevents damage from accidental short circuits. These safety features make it particularly suitable for automotive systems and industrial control equipment where component failure could have significant operational consequences.

Industrial-Grade Durability

Operating across the full industrial temperature range of -40°C to 125°C, this regulator maintains stable performance in extreme environments. The DPAK package's surface-mount design enables automated PCB assembly while minimizing board space requirements. With its 1.3V dropout voltage specification at full 800mA load, the device delivers consistent voltage regulation even during power supply fluctuations.

Design Flexibility and Applications

The LD1117DT50CTR's fixed 5V output makes it particularly well-suited for powering digital logic circuits, microcontroller systems, and sensor interfaces. Typical applications include:

• Embedded control systems
• Automotive electronics modules
• Industrial automation equipment
• Consumer electronics peripherals
• Power management subsystems

Its high PSRR (Power Supply Rejection Ratio) of 75dB at 120Hz ensures clean power delivery to noise-sensitive analog circuits, while the low quiescent current consumption enhances overall system efficiency. The device's compatibility with standard surface-mount assembly processes reduces manufacturing complexity and cost.

Tags: Low Dropout Regulators, 5V Power Supply, Surface Mount Voltage Regulators, Industrial Temperature ICs, High Current Linear Regulators