STMicroelectronics

L4995AJ

L4995AJ Description

The L4995AJ 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 tight voltage margins. Its 55dB PSRR (100Hz) minimizes noise, making it ideal for sensitive analog and digital circuits. Packaged in a PowerSSO-12 surface-mount form, the L4995AJ is RoHS3 compliant and meets automotive reliability standards.

L4995AJ 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.
• Low Quiescent Current (160 µA): Reduces power consumption in standby modes.
• High PSRR (55dB @ 100Hz): Excellent noise suppression for clean power.
• Protection Features: Over-temperature and short-circuit protection for reliability.
• Control Features: Enable and reset pins for flexible power management.
• Automotive-Grade: Compliant with stringent automotive environmental and operational requirements.

L4995AJ Applications

The L4995AJ excels in automotive electronics, such as ECUs (Engine Control Units), infotainment systems, and sensor interfaces, where stable 5V power is critical. It is also well-suited for industrial control systems, battery-powered devices, and embedded systems requiring low-noise, high-efficiency regulation. Its enable/reset functionality makes it ideal for power sequencing in multi-rail designs, while its robust protection features ensure longevity in harsh conditions.

Conclusion of L4995AJ

The L4995AJ stands out as a high-reliability, automotive-grade linear regulator with superior efficiency, noise performance, and protection features. Its combination of low dropout, high PSRR, and low quiescent current makes it a top choice for designers needing dependable 5V regulation in automotive, industrial, and embedded applications. STMicroelectronics' commitment to quality ensures this device meets the most demanding performance and environmental standards.