LT8390AHFE#PBF

DC DC Switching Controllers Overview

The LT8390AHFE#PBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices Inc., designed for high-efficiency power conversion. It operates with an input voltage range of 4V to 60V and supports output voltages from 0V to 60V. The device features a switchable frequency ranging from 600kHz to 2MHz, enabling optimization for size or performance. Key electrical parameters include a maximum duty cycle of 95%, a quiescent current of 2.1mA, and a load regulation of 1%. It is housed in a 28-TSSOP-EP package and functions within a junction temperature range of -40°C to +150°C.

DC DC Switching Controllers Feature Summary

• Synchronous four-switch topology enables efficient step-up, step-down, and pass-through operation across wide input and output voltage ranges.
• Integrated spread spectrum modulation reduces electromagnetic interference (EMI) by spreading switching noise energy.
• Supports external clock synchronization for system-wide timing alignment and noise management.
• Includes comprehensive protection features such as cycle-by-cycle current limiting, soft start, and thermal shutdown.

DC DC Switching Controllers Applications

• Industrial automation systems requiring robust power regulation
• Automotive electronics operating under varying battery conditions
• Battery-powered devices needing extended runtime through efficient voltage conversion
• LED lighting drivers with wide input voltage requirements

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'H' indicates the higher temperature grade (+150°C TJ) compared to standard variants. Confirm the '#PBF' designation ensures lead-free compliance and RoHS standards. Cross-reference the manufacturer's latest datasheet revision history to ensure compatibility with recent design changes or material declarations before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when a wide input voltage range up to 60V is required alongside precise output control. The adjustable frequency up to 2MHz allows for smaller passive components compared to lower-frequency alternatives. Ensure the application benefits from the synchronous rectification efficiency and EMI reduction features provided by the spread spectrum technology.

DC DC Switching Controllers Part Context

This part belongs to the LT8390 family of synchronous buck-boost controllers. It shares the core architecture with variants like LT8390IFE and LT8390AEFE but differs in temperature rating and frequency capabilities. The 'H' suffix typically denotes an extended industrial or automotive temperature grade, distinguishing it from commercial-grade counterparts within the same product line.

DC DC Switching Controllers Replacement Considerations

LT8390AFE#PBF offers similar functionality but may have different temperature ratings or frequency specifications. LT8390IEFE#PBF provides comparable performance with potentially different thermal characteristics. Verify pinout compatibility and electrical parameter overlaps before substituting.