LE50ABD-TR Linear Voltage Regulator IC - 5V Fixed Output 100mA

Reliable Voltage Regulation for Modern Electronic Systems

STMicroelectronics' LE50ABD-TR linear voltage regulator represents the pinnacle of precision power management solutions for modern electronic designs. This fixed 5V output regulator combines exceptional performance characteristics with robust protection features, making it an ideal choice for engineers seeking stable voltage conversion in space-constrained applications. Designed for surface-mount implementation, this device delivers 100mA output current while maintaining exceptional efficiency across varying load conditions.

Technical Excellence in Power Management

Engineered with advanced CMOS technology, the LE50ABD-TR offers a maximum dropout voltage of just 0.5V at 100mA load current. This low dropout characteristic enables efficient operation even with minimal headroom between input and output voltages. The device's 18V maximum input voltage capability provides exceptional design flexibility, allowing its use in both standard 12V and emerging higher-voltage systems. The fixed 5V output eliminates external component requirements, simplifying design while ensuring consistent performance.

Comprehensive Protection Architecture

Built-in safety features make the LE50ABD-TR exceptionally robust in real-world operating environments. The integrated thermal shutdown circuitry automatically reduces output current when temperatures exceed safe limits, preventing damage during fault conditions. Overcurrent protection safeguards against short circuits and excessive load conditions, while the enable control feature allows for power sequencing and system-level energy management. These protection mechanisms work synergistically to ensure reliable operation across automotive, industrial, and consumer electronics applications.

The device's 76dB PSRR (Power Supply Rejection Ratio) at 120Hz improves noise immunity, making it particularly suitable for sensitive analog circuits and RF applications where power quality is critical. With quiescent current consumption as low as 1mA, this regulator excels in battery-powered systems requiring extended operational life.

Design Flexibility and Application Versatility

Engineered for modern electronics, the LE50ABD-TR's 8-SOIC package combines compact dimensions with excellent thermal dissipation characteristics. This makes it particularly well-suited for portable devices, IoT sensors, and automotive control modules where space efficiency and reliability are paramount. The regulator's enable function allows easy integration into power management systems requiring dynamic voltage control, while its wide operating temperature range (-40°C to 125°C) ensures reliable performance in demanding industrial environments.

Key applications include:

• Consumer electronics power rails
• Automotive sensor modules
• Industrial control systems
• Medical monitoring devices
• Telecom infrastructure equipment

Engineering Confidence from STMicroelectronics

As a trusted leader in semiconductor solutions, STMicroelectronics has engineered the LE50ABD-TR to meet rigorous industry standards. This AEC-Q100 qualified device undergoes extensive testing to ensure compliance with automotive reliability requirements, while its RoHS-compliant construction meets global environmental regulations. The regulator's tape-and-reel packaging facilitates automated PCB assembly, supporting high-volume manufacturing processes.

When compared to competing solutions, the LE50ABD-TR distinguishes itself through its combination of high PSRR performance, low dropout voltage, and comprehensive protection features in a compact SOIC footprint. Its fixed voltage configuration eliminates external resistor dividers, reducing component count and improving system reliability while maintaining cost-effectiveness.

Tags: Voltage Regulator IC, Fixed Output Regulator, Low Dropout Regulator, Power Management, SOIC Package