LTC7871ILWE#PBF

DC DC Switching Controllers Overview

The LTC7871ILWE#PBF is a six-phase synchronous bidirectional buck-boost controller designed for high-power energy conversion. It operates with VHIGH up to 100V and VLOW up to 60V, supporting frequencies from 60kHz to 750kHz. The device features an advanced current mode control architecture ensuring ±1% voltage regulation accuracy across the operating temperature range of -40°C to 125°C. It utilizes a thermal-enhanced 64-pin LQFP package.

DC DC Switching Controllers Feature Summary

• Six-phase synchronous bidirectional buck-boost architecture
• Advanced current mode control for precise phase matching
• SPI interface for programmable monitoring and configuration
• Supports parallel expansion up to 24 phases

DC DC Switching Controllers Applications

• Automotive 48V/12V dual battery systems
• Humanoid robot power management
• Backup power supply systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and standard packaging. Confirm the ILWE designation corresponds to the industrial temperature grade (-40°C to 125°C). Ensure the 64-pin LQFP footprint matches the target PCB design. Cross-reference the datasheet revision date against manufacturing batches to ensure feature consistency.

DC DC Switching Controllers Selection Notes

Select this model for applications requiring bidirectional energy flow between two distinct voltage rails. The ILWE variant is suitable for industrial environments where operation down to -40°C is required. Consider the J or H variants if junction temperatures exceed 125°C, noting potential lifetime derating above that threshold. Evaluate the need for multi-phase expansion if current demands surpass single-unit capabilities.

DC DC Switching Controllers Part Context

Part of the PolyPhase series, the LTC7871 family addresses high-current density requirements in automotive and robotics sectors. It replaces traditional single-phase solutions by distributing load across six phases, reducing input/output capacitance and improving transient response. The controller manages external MOSFETs and gate drivers to optimize efficiency and thermal performance.

DC DC Switching Controllers Replacement Considerations

LTC7871ELWE: Lower temperature range (0°C to 85°C). LTC7871JLWE: Extended temperature range (-40°C to 150°C). LTC7871HLWE: Full temperature range guarantee (-40°C to 150°C). All share identical electrical specifications and pinouts.