STMicroelectronics Voltage Regulator 4.5V to 38V Input, 3A Output, 250kHz Switching Frequency, VFDFPN 10-Pin L7986TR

STMicroelectronics L7986TR is a high-performance step-down switching voltage regulator designed for efficient DC power conversion with an integrated power MOSFET capable of delivering up to 3 A continuous current. The device supports an input voltage range from 4.5 V to 38 V, allowing flexible use in various power supply designs. The output voltage is adjustable starting from a low 0.6 V reference voltage up to the input voltage, ensuring versatility across multiple applications.

The device features an internal oscillator operating at a fixed frequency of 250 kHz, which can be externally programmed up to 1 MHz, enabling designers to optimize performance based on switching and noise considerations. Soft-start and enable features are internally implemented to prevent high inrush currents during startup and to allow controlled power sequencing.

The regulator supports 100% duty cycle operation, enabling low dropout voltage performance when input voltage approaches output voltage, enhancing efficiency especially in battery-powered devices. Integrated protection circuits provide overcurrent and thermal shutdown capabilities, protecting both the regulator and the surrounding circuitry.

The L7986TR comes in a space-saving VFDFPN 10-pin surface mount package measuring 3.15 mm by 3.15 mm with a low profile height of 950 micrometers, facilitating compact PCB design and improved thermal management through exposed pad features. Its maximum operating temperature of 150°C allows deployment in demanding thermal environments.

Typical applications include consumer electronics such as set-top boxes, DVD players, car audio systems, LCD TVs and monitors; industrial equipment such as programmable logic devices, FPGA power supplies and chargers; networking hardware including XDSL modems and DC-DC power modules; and computing devices like optical storage units, hard disk drives, printers, and audio/graphic cards.

Step-down switching regulator with integrated 3.7 A power MOSFET. Wide input voltage range 4.5 V to 38 V for versatile use cases. Adjustable output voltage starting from 0.6 V for customized power rails. Internally fixed 250 kHz switching frequency, programmable up to 1 MHz.

Internal soft-start and enable function for safe operation. 100% duty cycle capability improves low dropout efficiency. Overcurrent and thermal protection safeguards device and circuit. Compact 10-pin VFDFPN surface mount package measuring 3.15 x 3.15 mm.

High operating temperature tolerance up to 150°C. Ideal for consumer, industrial, networking, and computer power management.

Explore more STMicroelectronics power management integrated circuits and Voltage Regulators in the EnvMart catalog to find solutions tailored to your industrial, commercial, or consumer electronics projects.