LTC3858EUH-2#TRPBF

DC DC Switching Controllers Overview

The LTC3858EUH-2#TRPBF is a low quiescent current, dual-channel synchronous step-down switching regulator controller designed for high-efficiency power conversion. It features a constant frequency current mode architecture with a phase-lockable switching frequency range of 75 kHz to 850 kHz. The device supports an input voltage range from 4 V to 38 V and can drive all N-channel synchronous power MOSFET stages. It operates within a junction temperature range of -40°C to +125°C and utilizes a 32-lead QFN (5mm x 5mm) package.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture enables independent control of two synchronous buck converters
• Low quiescent current operation optimizes efficiency across varying load conditions
• Phase-shifted output operation minimizes input capacitor ESR losses and system noise
• Constant frequency current mode control allows flexible phase-lockable switching frequencies

DC DC Switching Controllers Applications

• High-output voltage synchronous poly-phase buck converters
• Low quiescent current dual output synchronous buck converters
• N-channel synchronous power MOSFET driver stages in DC-to-DC conversion systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing components. Confirm that the part number corresponds to the Analog Devices Inc. manufacturer identification. Ensure compatibility with the required 32-QFN footprint during PCB layout planning. Cross-reference the datasheet specifications against the intended operating temperature and voltage requirements before finalizing procurement decisions.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual isolated or non-isolated synchronous buck outputs with minimal standby power consumption. The wide input voltage range accommodates various bus architectures. Consider the phase-lockable frequency feature for synchronization needs in multi-module systems. Evaluate thermal performance based on the QFN package characteristics and expected current loads.

DC DC Switching Controllers Part Context

This controller belongs to the LTC3858 family of low IQ synchronous step-down controllers. It shares architectural similarities with other devices in the series but is specifically configured as a dual-channel unit. The EUH-2 designation identifies the specific package type and channel configuration within the broader product line managed by Analog Devices Inc.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other dual-channel synchronous buck controllers if direct substitution is required.