STMicroelectronics

L4995J

L4995J Description

The L4995J from STMicroelectronics is a high-performance 5V fixed-output linear voltage regulator designed for automotive-grade applications. With an input voltage range up to 31V and a robust 500mA output current, it delivers stable power in demanding environments. The device features a low quiescent current (160 µA) and a dropout voltage of just 0.5V at 400mA, ensuring efficient operation even with marginal input voltages. Its 55dB PSRR (100Hz) minimizes noise, making it ideal for sensitive analog and digital circuits. Packaged in a PowerSSO-12 surface-mount form factor, the L4995J is engineered for reliability in harsh conditions, complying with ROHS3 and REACH standards.

L4995J Features

• Fixed 5V Output: Precision-regulated voltage for stable power delivery.
• Wide Input Range (Up to 31V): Supports high-voltage automotive and industrial systems.
• Low Dropout (0.5V @ 400mA): Enhances efficiency in low-input scenarios.
• Advanced Control & Protection: Includes enable, reset, and watchdog functions, plus over-temperature and short-circuit protection.
• Automotive-Grade Reliability: Meets stringent AEC-Q100 standards for temperature and operational stress.
• Low Quiescent Current (160 µA): Reduces power consumption in standby modes.
• High PSRR (55dB): Superior noise rejection for clean power in sensitive applications.

L4995J Applications

The L4995J excels in automotive electronics, such as ECUs, infotainment systems, and ADAS modules, where stable voltage is critical. It’s also suited for:

• Industrial Control Systems: PLCs, sensors, and actuators requiring robust voltage regulation.
• Telecommunications: Base stations and networking equipment needing low-noise power.
• Consumer Electronics: High-reliability devices like set-top boxes and IoT gateways.
• Battery-Powered Systems: Efficient operation extends battery life in portable and backup power applications.

Conclusion of L4995J

The L4995J stands out as a high-efficiency, automotive-qualified linear regulator with advanced control and protection features. Its low dropout, high PSRR, and rugged design make it a superior choice for mission-critical applications in automotive, industrial, and telecom sectors. For engineers seeking a reliable, noise-resistant power solution, the L4995J delivers unmatched performance in a compact, surface-mount package.