STMicroelectronics

L4995AK

L4995AK Description

The L4995AK from STMicroelectronics is a fixed 5V, 500mA linear voltage regulator designed for automotive-grade applications. Housed in a PowerSSO-24 surface-mount package, this obsolete but reliable IC delivers stable output with a low dropout voltage of 0.5V @ 400mA, making it suitable for power-sensitive designs. Its 31V maximum input voltage and 160 µA quiescent current ensure efficient operation in demanding environments. The device features enable/reset control and robust over-temperature/short-circuit protection, aligning with automotive reliability standards.

L4995AK Features

• Fixed 5V Output: Precision-regulated voltage for stable power delivery.
• High Input Voltage Tolerance: Supports up to 31V, ideal for automotive and industrial systems.
• Low Dropout: 0.5V @ 400mA minimizes power loss.
• Low Quiescent Current: 160 µA enhances energy efficiency.
• Protection Mechanisms: Over-temperature and short-circuit protection ensure system safety.
• Automotive Grade: Compliant with stringent automotive requirements.
• Control Features: Enable/reset pins for flexible power management.
• 55dB PSRR (100Hz): Excellent noise suppression for sensitive applications.

L4995AK Applications

• Automotive Electronics: Engine control units (ECUs), infotainment systems, and sensors.
• Industrial Power Supplies: Low-noise voltage regulation for control systems.
• Embedded Systems: Reliable power for microcontrollers and peripherals.
• Battery-Powered Devices: Efficient voltage conversion in portable equipment.

Conclusion of L4995AK

The L4995AK stands out for its high input voltage range, low dropout, and automotive-grade robustness, making it a dependable choice for harsh environments. While obsolete, its protection features, low Iq, and PSRR performance remain competitive for legacy designs. Ideal for automotive and industrial applications, this regulator balances efficiency with reliability. Engineers seeking a proven 5V solution with advanced control options may find the L4995AK a compelling option despite its discontinued status.