LT8210EUJ#PBF

Overview

The LT8210EUJ#PBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices, designed for high-voltage applications with input and output voltages up to 100V. It operates within an input range of 2.8V to 100V and delivers an output current of 2.5A. The device features a fixed switching frequency of 400kHz and ultra-low quiescent current of 4µA. It supports multiple operating modes including PassThru, forced continuous, pulse-skipping, and Burst Mode. The component is housed in a 40-lead QFN package (6x6mm) and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Supports synchronous buck-boost topology with integrated four-switch architecture
• Enables seamless PassThru operation for direct battery connection without voltage drop
• Offers flexible control modes including Burst Mode for enhanced light-load efficiency
• Provides precise regulation with low load regulation error

Applications

• Industrial automation systems requiring wide input voltage ranges
• Battery-powered equipment needing efficient power management across discharge cycles
• Automotive electronics operating under varying supply conditions
• Portable devices utilizing single-cell lithium-ion or multi-cell battery packs

Procurement Notes

Verify the specific suffix PBF confirms lead-free compliance and RoHS standards before procurement. Confirm the QFN-40 package dimensions match your PCB footprint requirements. Ensure the 100V rating aligns with your system's maximum transient voltage levels. Check for any recent product change notifications regarding pinout or electrical characteristics updates from Analog Devices.

Selection Notes

Select this controller when a wide input-to-output voltage ratio is required without polarity inversion. Consider the 400kHz switching frequency for balancing component size and efficiency. Evaluate the need for PassThru functionality if maintaining battery connection during shutdown is critical. Assess thermal performance needs given the 125°C maximum junction temperature capability.

Part Context

This part belongs to the LT8210 series of high-voltage DC/DC controllers. It complements other Analog Devices power management solutions by addressing applications where standard buck or boost converters cannot handle the full voltage range. The EUJ package variant provides a compact surface-mount solution suitable for space-constrained designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.