LTC3869EUF#PBF

DC DC Switching Controllers Overview

The LTC3869EUF#PBF is a dual synchronous step-down switching regulator controller from Analog Devices. It drives all N-channel power MOSFET stages using a constant frequency current mode architecture with a phase-lockable switching frequency of up to 850kHz. The device operates from an input voltage range of 4V to 24V and features independent output voltage tracking for each controller. It includes a precision 0.8V reference, power good indicators, and independent TRACK/SS pins for start-up control. Current foldback limits MOSFET heat dissipation during short-circuit conditions.

DC DC Switching Controllers Feature Summary

• Dual channel synchronous buck controller architecture
• Phase-lockable switching frequency up to 850kHz
• Independent output voltage tracking capability
• Current foldback protection for short circuits

DC DC Switching Controllers Applications

• Automotive always-on systems
• Distributed DC power systems
• Battery operated digital devices

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation, as variations may exist. Confirm package type and temperature grade requirements match the design specifications. Check availability status through authorized distributors, as supply levels can fluctuate. Ensure compatibility with external MOSFETs and passive components selected for the target application parameters.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual isolated or tracked outputs from a single controller IC. Consider the 4V to 24V input range and the need for high efficiency in space-constrained designs. Evaluate the thermal performance based on the QFN-EP package and expected load currents. Verify that the required switching frequency falls within the phase-lockable range for synchronization needs.

DC DC Switching Controllers Part Context

This part belongs to the LTC3869 series of high-performance synchronous step-down controllers. It is designed for applications demanding precise voltage regulation and efficient power conversion. The series supports various output configurations and integrates features like soft-start and tracking to simplify system design.

DC DC Switching Controllers Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter equivalence before replacing.