LT8708ILWE#PBF

Overview

The LT8708ILWE#PBF is a high-performance, synchronous four-switch buck-boost DC/DC controller from Analog Devices. It operates with an input voltage range of 2.8V to 80V and supports bidirectional power flow. The device features a fixed switching frequency of 400kHz and delivers up to 15A output current. It provides a regulated output voltage between 1.3V and 80V with a maximum duty cycle of 80%. Designed for industrial applications, it functions within a temperature range of -40°C to +125°C and is housed in a 64-lead eLQFP package.

Feature Summary

• Bidirectional power flow capability for flexible energy transfer
• Synchronous four-switch topology for high efficiency
• Wide input voltage range supporting various supply conditions
• Integrated clock synchronization for multi-phase systems

Applications

• Industrial motor drives requiring reversible power conversion
• Battery management systems with bidirectional charging/discharging
• Automotive electronics operating across wide voltage ranges
• Telecommunications backup power interfaces

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the eLQFP-64 package dimensions match your PCB footprint requirements. Check for moisture sensitivity level (MSL) handling instructions due to surface mount packaging. Ensure the supplier provides valid traceability documentation for the Analog Devices manufacturer part number.

Selection Notes

Select this component when bidirectional buck-boost control is required with inputs exceeding or falling below output levels. The 400kHz frequency offers a balance between size and efficiency. Compare against the LT8708 standard version if the slave-specific pinout of the ILWE variant is not needed. Verify thermal performance under maximum load conditions given the 15A current rating.

Part Context

This part belongs to the LT8708 family of 80V synchronous buck-boost controllers. It is functionally similar to the LT8708ILWE#PBF but lacks the '-1' designation, which typically denotes a master/slave configuration variant. The ILWE#PBF is a standalone controller suitable for single-channel applications without slave coordination requirements.

Replacement Considerations

LT8708IUHG-1#PBF is a confirmed substitute in the same series, offering identical electrical functionality in a different 40-QFN package. LT8708ILWE#PBF is the non-leaded equivalent without the '-1' suffix, sharing the same package but potentially differing in internal configuration for master/slave roles.