LTC3861IUH-1#TRPBF

DC DC Switching Controllers Overview

The LTC3861IUH-1#TRPBF is a dual PolyPhase synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates with an input voltage range of 3 V to 24 V and supports output voltages from 600 mV to 5.5 V. The device features a fixed switching frequency of 2.25 MHz and draws a static current of 30 mA. Designed for high-current applications, it delivers up to 40 A per phase. The component is housed in a QFN-32 package and functions within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Dual-channel PolyPhase architecture enabling precise current sharing between phases
• Voltage mode control topology for stable regulation under varying load conditions
• Integrated soft-start and tracking capabilities for controlled power-up sequences

DC DC Switching Controllers Applications

• High current distributed power systems
• Digital signal processor (DSP) power supplies
• Telecommunications DC/DC power converters
• Industrial power supply modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the manufacturer status as this part may be subject to end-of-life notices or limited availability. Ensure compatibility with external MOSFETs and gate drivers for the intended current requirements.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring dual independent outputs with synchronized phase shifting. The 2.25 MHz frequency allows for smaller passive components compared to lower frequency alternatives. Verify that the external drive circuitry can support the required 40 A per phase capability.

DC DC Switching Controllers Part Context

This component belongs to the LTC3861 family of dual multiphase controllers. It is functionally similar to the LTC3861EUH-1#PBF but differs in the operating temperature grade and packaging format. The IUH designation typically denotes an industrial temperature range variant.

DC DC Switching Controllers Replacement Considerations

LTC3861EUH-1#PBF is a verified substitute with identical electrical specifications but potentially different thermal or packaging characteristics.