**LTC3891EUDC#TRPBF: A High-Efficiency, Dual Output Step-Down DC/DC Controller**

In the realm of power management, efficiency, size, and flexibility are paramount. The **LTC3891EUDC#TRPBF** from Analog Devices is a synchronous step-down DC/DC controller that excels in these areas, engineered to drive two independent N-channel MOSFET power stages from a single IC. It is specifically designed for high-performance applications where **exceptional efficiency and precise regulation** are critical.

A key strength of this controller is its **wide input voltage range of 4V to 60V**, making it an ideal solution for a vast array of applications. These include automotive systems, industrial equipment, telecommunications infrastructure, and distributed power architectures that must handle large voltage transients or operate from a wide variety of sources, including 12V, 24V, and 48V rails.

The LTC3891 operates at **selectable fixed frequencies from 50kHz to 900kHz**, allowing designers to optimize their systems for efficiency or component size. For noise-sensitive applications, it can also be synchronized to an external clock. Its current mode architecture provides excellent line and load transient response, while its **robust peak current limiting** protects the power components under fault conditions.

Each of the two output channels can be independently programmed and is capable of producing outputs from 0.8V up to 24V. The controller achieves high efficiency across a wide load range through the use of **forced continuous mode, pulse-skip mode, and Burst Mode® operation**. In Burst Mode operation, the IC consumes only **40µA of quiescent current per channel**, a critical feature for battery-powered systems that require long standby life.

Housed in a compact, thermally enhanced 28-lein QFN package, the LTC3891EUDC#TRPBF integrates all necessary control logic, oscillators, and feedback circuitry. Its design simplifies the task of creating compact, high-density, and highly efficient dual-output power supplies.

**ICGOODFIND:** The LTC3891EUDC#TRPBF stands out as a superior dual-output synchronous buck controller, offering designers an unparalleled combination of a wide input range, high efficiency through advanced operational modes, and flexible configurability. It is a top-tier choice for demanding power conversion tasks across automotive, industrial, and communications markets.

**Keywords:** High-Efficiency, Dual Output, Step-Down DC/DC Controller, Wide Input Voltage, Burst Mode Operation.