LT8705AMPFE#PBF

Overview

The LT8705AMPFE#PBF is a high-performance synchronous buck-boost switching regulator controller from Analog Devices. It operates with input voltages ranging from 2.8V to 80V and supports output voltages from 1.3V to 80V. The device features a 4-switch topology capable of delivering up to 10A output current. It includes integrated soft start, frequency control, and clock synchronization functions. Operating temperatures range from -55°C to +150°C for the A-grade variant. The component is housed in a 38-TSSOP-EP package.

Feature Summary

• Synchronous four-switch buck-boost topology supporting input and output voltages above, below, or equal to each other
• Integrated clock synchronization capability for multi-phase or parallel system operation
• Built-in soft start function to limit inrush current during startup
• Frequency control feature allowing external adjustment of switching frequency

Applications

• Supercapacitor backup power systems
• Industrial distributed power supplies
• Telecom voltage stabilizers
• Battery-powered equipment requiring wide input voltage ranges

Procurement Notes

Verify the specific suffix PBF indicates lead-free compliance when reviewing official documentation. Confirm that the A-grade designation aligns with the required extended temperature range specifications for your application environment. Ensure the TSSOP-EP package footprint matches your PCB design constraints before finalizing procurement orders.

Selection Notes

Select this controller for applications requiring wide input voltage flexibility where traditional buck or boost converters are insufficient. Consider the 80V rating for higher voltage industrial systems. Evaluate thermal management requirements given the high current capabilities and operating temperature range. Verify compatibility with external MOSFETs for the synchronous rectification stages.

Part Context

This component belongs to the LT8705 family of buck-boost controllers designed by Analog Devices. It shares core architectural similarities with variants like the LT8705EFE#PBF but differs in temperature grade and specific operational parameters. The family targets robust power conversion needs across various industrial and telecom sectors.

Replacement Considerations

LT8705EFE#PBF

FAQ

What is the maximum input voltage supported by the LT8705AMPFE#PBF?

The maximum input voltage supported is 80V.

Does the LT8705AMPFE#PBF support clock synchronization?

Yes, the device includes a clock synchronization feature.