STMicroelectronics

L4993MD

L4993MD Description

The L4993MD is a high-performance linear regulator designed by STMicroelectronics, specifically tailored for automotive applications. This IC offers a fixed output voltage of 5V and can deliver a maximum output current of 150mA. It is designed to operate with an input voltage range up to 31V, making it robust against voltage fluctuations commonly encountered in automotive environments. The regulator features a low dropout voltage of 0.4V at 150mA, ensuring efficient power conversion even under low input voltage conditions.

L4993MD Features

• Output Type: Fixed at 5V, providing a stable power supply for sensitive electronics.
• Input Voltage Range: Up to 31V, ensuring compatibility with a wide range of automotive power sources.
• Output Current: Capable of delivering up to 150mA, sufficient for powering various automotive electronic modules.
• Low Dropout Voltage: 0.4V at 150mA, enhancing efficiency and reducing power loss.
• Control Features: Includes reset and watchdog functions, enhancing system reliability and fault tolerance.
• Protection Features: Over-temperature and short-circuit protection ensure robustness and longevity.
• Low Quiescent Current: 125 µA, minimizing power consumption during idle states.
• High PSRR: 55dB at 100Hz, providing excellent noise rejection and clean power output.
• Compliance: ROHS3 compliant and REACH unaffected, meeting stringent environmental and regulatory standards.
• Moisture Sensitivity Level: MSL 3 (168 Hours), suitable for surface mount applications in humid environments.
• Mounting Type: Surface mount, ideal for compact and space-constrained automotive designs.
• Package: Supplied in a tube package, facilitating easy handling and assembly in manufacturing processes.

L4993MD Applications

The L4993MD is particularly well-suited for automotive applications where reliability, efficiency, and robustness are paramount. Its fixed 5V output and 150mA current capability make it ideal for powering various electronic control units (ECUs), infotainment systems, and other automotive electronics. The low dropout voltage ensures efficient operation even when the input voltage is low, such as during engine start-up or when the battery is weak. The reset and watchdog features provide additional layers of system protection, ensuring reliable operation in harsh automotive environments.

Conclusion of L4993MD

The L4993MD from STMicroelectronics stands out as a reliable and efficient linear regulator designed for automotive applications. Its combination of a fixed 5V output, low dropout voltage, and robust protection features make it an excellent choice for powering sensitive automotive electronics. The inclusion of reset and watchdog functions further enhances its reliability, making it a preferred solution for engineers designing automotive electronic systems. With its compliance to environmental and regulatory standards, the L4993MD ensures long-term sustainability and compatibility in modern automotive designs.