LTC3785IUF#TRPBF

DC DC Switching Controllers Overview

The LTC3785IUF#TRPBF is a synchronous step-down/step-up DC/DC controller from Analog Devices, designed for high-efficiency power conversion. It operates with an input voltage range of 2.7V to 10V and supports output currents up to 5A. The device utilizes a 24-QFN (4x4) package and features a switching frequency range of 100kHz to 1MHz. Key electrical parameters include a maximum duty cycle of 99% and a supply voltage range of 2.7V to 10V. It offers positive output configuration and includes control characteristics such as current limit, enable, and soft start.

DC DC Switching Controllers Feature Summary

• Synchronous buck-boost topology that drives all N-channel power MOSFETs regardless of whether the input voltage is above, below, or equal to the output voltage.
• Integrated current mode control architecture eliminates the need for external sense resistors, reducing component count and improving efficiency.
• Programmable switching frequency allows optimization for size and performance across a wide range of applications.

DC DC Switching Controllers Applications

• Battery-powered equipment requiring efficient voltage regulation across varying battery states
• Industrial automation systems needing robust DC-DC conversion
• Portable electronics utilizing single-cell lithium-ion or lithium-polymer batteries

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the manufacturer part number matches exactly to ensure compatibility with design specifications. Check for RoHS compliance status if required by project regulations. Validate availability through authorized distributors to avoid counterfeit components.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring seamless transition between boost and buck modes without external sensing resistors. Ensure the application input voltage stays within the 2.7V to 10V range. Consider the thermal performance of the 24-QFN package for heat dissipation requirements in compact layouts.

DC DC Switching Controllers Part Context

This component belongs to the LTC3785 series of synchronous controllers. It is distinct from the LTC3787, which supports higher voltages, and the LTC3784, which is a boost-only controller. The IUF suffix denotes the industrial temperature grade and QFN package type.

DC DC Switching Controllers Replacement Considerations

LTC3785EUF#TRPBF is a verified substitute part number within the same series offering identical functionality and pinout compatibility.