STMicroelectronics L7986TR Step-Down Switching Regulator

The L7986TR from STMicroelectronics is a highly efficient, monolithic synchronous step-down switching regulator that is designed to deliver up to 3 A of continuous output current. Operating from a wide input voltage range of 4.5 V to 38 V, this power management IC is ideal for a variety of applications that require a regulated lower voltage from a higher input voltage, including industrial, automotive, and consumer electronics.

The L7986TR utilizes a high-efficiency switching topology that enables it to achieve a very low dropout and maintain excellent efficiency across a broad range of loads. Its high switching frequency, which can be programmed up to 1 MHz, allows for the use of small surface-mount inductors and capacitors, thereby reducing the overall solution size and improving transient response.

This regulator features an internal 160 mΩ high-side power MOSFET and a 100 mΩ synchronous rectifier that work together to minimize power loss and heat generation. The L7986TR also includes a variety of protection features such as overcurrent protection, thermal shutdown, and under-voltage lockout, ensuring reliable operation under adverse conditions.

The L7986TR is highly versatile, with an adjustable output voltage that can be set from 0.8 V to VIN with two external resistors. This flexibility makes it suitable for powering a wide range of devices, from microcontrollers and DSPs to analog circuits and FPGAs. Its high level of integration simplifies design and accelerates time-to-market for engineers.

The device comes in a VFQFPN 16L 5x6x1.7 package, which is designed for optimal thermal performance and space-saving on the PCB. The L7986TR is also available in tape and reel packaging, making it suitable for high-volume production.

In summary, the L7986TR step-down switching regulator from STMicroelectronics is a compact, efficient, and reliable solution for a wide range of power supply applications. With its advanced features and protections, it delivers performance and flexibility that designers need to create sophisticated electronic systems.