The L5985TR from STMicroelectronics is a highly efficient, monolithic synchronous step-down switching regulator that is designed to deliver a continuous output current of up to 3A to the load with excellent line and load regulation. This regulator is part of STMicroelectronics' extensive portfolio of power management ICs, catering to a wide range of applications including consumer electronics, automotive, and industrial systems.

Key Features

• Output Current: Capable of delivering up to 3A of continuous output current.
• Input Voltage Range: Designed to operate over a wide input voltage range from 4V to 38V, making it suitable for a variety of supply sources.
• Adjustable Output Voltage: The output voltage can be adjusted from 0.6V to the input voltage (V<sub>IN) less the saturation voltage of the internal high-side switch, allowing for a high degree of flexibility for different design requirements.
• High Efficiency: Integrated synchronous rectification enhances efficiency, especially at lower output voltages.
• Protection Features: Includes overcurrent protection, thermal shutdown, and under-voltage lockout (UVLO) to ensure safe operation under varying conditions.
• Frequency Synchronization: Allows synchronization with an external clock to manage switching frequency and minimize electromagnetic interference (EMI).
• Small Package: Available in a compact VFQFPN (very fine pitch quad flat package no leads) 16-pin package, ideal for space-constrained applications.

Applications

The versatility of the L5985TR makes it an excellent choice for a broad range of applications, including:

• Point of Load (PoL) power supplies
• Networking and telecommunications equipment
• Consumer electronics such as set-top boxes and LCD TVs
• Computer peripherals and servers
• Industrial and medical equipment

Conclusion

With its robust feature set and flexible design, the L5985TR step-down switching regulator from STMicroelectronics is an ideal solution for designers looking to improve power efficiency, reliability, and performance in their electronic systems. Its compact size, high efficiency, and comprehensive protection features make it an excellent choice for both new designs and upgrades to existing power supply architectures.