STMicroelectronics

L4995K

L4995K Description

The L4995K from STMicroelectronics is a high-performance, fixed 5V linear voltage regulator designed for automotive-grade applications. With an input voltage range up to 31V and a 500mA output current capability, it delivers stable power in demanding environments. The regulator features low dropout voltage (0.5V @ 400mA) and ultra-low quiescent current (160 µA), making it highly efficient for battery-powered systems. Its 55dB PSRR (100Hz) ensures excellent noise suppression, critical for sensitive electronics. Packaged in a PowerSSO-24 tube, the L4995K is RoHS3 compliant and meets REACH and automotive-grade reliability standards (MSL 3).

L4995K Features

• Fixed 5V Output: Precision-regulated voltage for stable operation.
• High Input Voltage (31V Max): Suitable for automotive and industrial power systems.
• Low Dropout (0.5V @ 400mA): Optimized for efficiency in low-voltage conditions.
• Advanced Control & Protection: Includes enable, reset, watchdog, and protections against over-temperature and short circuits.
• Low Quiescent Current (160 µA): Ideal for always-on applications.
• 55dB PSRR: Superior noise rejection for clean power delivery.
• Automotive-Grade: Compliant with stringent automotive reliability requirements.

L4995K Applications

The L4995K excels in automotive ECUs (Engine Control Units), infotainment systems, and ADAS (Advanced Driver Assistance Systems) due to its rugged design and fault tolerance. It is also well-suited for:

• Industrial control systems requiring stable 5V rails.
• Battery-powered devices benefiting from low Iq and dropout.
• Noise-sensitive analog/digital circuits leveraging high PSRR.

Conclusion of L4995K

The L4995K stands out as a robust, efficient, and feature-rich linear regulator tailored for automotive and industrial applications. Its high input tolerance, low power dissipation, and integrated protections make it a superior choice over generic regulators. For engineers designing mission-critical systems, the L4995K offers reliability, performance, and compliance with industry standards.