LT8708ELWE#PBF

Overview

The LT8708ELWE#PBF is an 80V bidirectional synchronous four-switch buck-boost DC/DC controller manufactured by Analog Devices. It operates within a supply voltage range of 2.8V to 80V and supports switching frequencies up to 400kHz with a maximum duty cycle of 80%. The device provides one output capable of delivering up to 15A, with output voltages adjustable from 1.3V to 80V. Designed for robust performance, it functions across an extended temperature range of -40°C to +125°C. The component is housed in an eLQFP-64 surface-mount package.

Feature Summary

• Supports bidirectional power flow for flexible energy transfer applications
• Integrates control logic for synchronous four-switch buck-boost topology
• Enables operation with input voltages above, below, or equal to the output voltage

Applications

• Industrial battery management systems requiring charge/discharge control
• Telecommunications power distribution networks
• Automotive electronics with varying supply rail conditions

Procurement Notes

Verify that the specific suffix #PBF indicates lead-free packaging compliance before procurement. Confirm that the eLQFP-64 package dimensions match your PCB footprint requirements. Ensure that the operating temperature range aligns with your environmental specifications. Check current availability status as supply may be restricted in certain regions. Validate that the 80V rating meets your system's maximum voltage stress limits.

Selection Notes

Select this controller when designing systems requiring high-voltage bidirectional conversion capabilities. Consider the 400kHz switching frequency for optimal trade-offs between efficiency and passive component size. Evaluate the 15A output capability against your peak load requirements. Ensure compatibility with external MOSFETs rated for 80V operation. Review thermal management needs given the extended temperature range and power density.

Part Context

This component belongs to the LT8708 series of high-performance buck-boost controllers. It is part of Analog Devices' portfolio of power management integrated circuits designed for demanding industrial and automotive applications. The ELWE variant specifies the specific package type and temperature grade within the broader product family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Analog Devices resources for cross-reference information.