LTC3871HLXE-1#PBF

DC DC Switching Controllers Overview

The LTC3871HLXE-1#PBF is a high-performance bidirectional buck or boost switching regulator controller from Analog Devices. It operates in either buck or boost mode on demand, supporting input voltages from 1.2 V to 100 V and delivering up to 30 A output current. The device features a fixed 500 kHz switching frequency and supports clock synchronization. It includes integrated soft start, phase control, and current limit protection. The component is housed in a 48-LQFP package with exposed pad, suitable for surface mount applications across an operating temperature range of -40°C to +150°C.

DC DC Switching Controllers Feature Summary

• Bidirectional operation capability allowing seamless transition between buck and boost modes
• Wide input voltage range supporting 1.2 V to 100 V supply rails
• Integrated phase control and clock synchronization for multi-phase configurations

DC DC Switching Controllers Applications

• High efficiency polyphase bidirectional charger supplies
• Battery management systems requiring reversible power flow
• Industrial power conversion interfaces with wide voltage variability

DC DC Switching Controllers Procurement Notes

Verify the specific suffix PBF confirms lead-free compliance and RoHS status against the manufacturer's latest datasheet. Confirm the LQFP-48 package marking and pinout alignment with your PCB footprint design. Ensure the thermal pad connection meets the recommended layout guidelines for optimal heat dissipation at full load conditions.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring reversible power flow between a wide voltage bus and a lower voltage rail. The 500 kHz fixed frequency simplifies filter component selection while maintaining high efficiency. Consider the 30 A output capability and thermal performance requirements when determining heatsinking needs for continuous operation.

DC DC Switching Controllers Part Context

This component belongs to the LTC3871 series of PolyPhase controllers designed for high-density power applications. It complements development tools like DC2348A-A and DC2348A-B for evaluation purposes. The part is categorized under PMIC switching regulators, specifically targeting complex power management tasks in industrial and automotive environments.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing gate drivers and external MOSFETs if considering alternative controllers within the same family.