LTC7801HFE#PBF

DC DC Switching Controllers Overview

The LTC7801HFE#PBF is a synchronous step-down DC/DC controller from Analog Devices, designed for high-voltage applications with an input voltage range of 4V to 140V and an absolute maximum rating of 150V. It operates in a TSSOP-24 package and supports switching frequencies between 50kHz and 900kHz. The device regulates output voltages from 0.8V to 60V and drives external N-channel MOSFETs. It features low quiescent current of 40µA during operation and 10µA in shutdown mode. The controller functions within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Supports wide input voltage ranges up to 140V for automotive and industrial power systems
• Enables adjustable gate drive levels from 5V to 10V to optimize efficiency with various MOSFET types
• Provides flexible switching frequency options including programmable fixed frequency and phase-lock capability
• Integrates OPTI-LOOP compensation to maintain stability across diverse output capacitance and ESR values

DC DC Switching Controllers Applications

• Automotive power systems
• Industrial power supplies
• Telecommunications power infrastructure
• High-voltage battery-powered equipment

DC DC Switching Controllers Procurement Notes

Verify the specific suffix HFE against official Analog Devices documentation to confirm the extended temperature grade and package variant. Confirm RoHS compliance status through the manufacturer's latest datasheet or certification documents. Ensure that the ordering information matches the exact pinout and thermal requirements for your PCB layout design.

DC DC Switching Controllers Selection Notes

Select this component when designing buck converters requiring high input voltage tolerance and precise current-mode control. Consider the TSSOP-24 package constraints for thermal management and board space. Evaluate the need for phase-locking capabilities if multiple converters must operate synchronously in complex power architectures.

DC DC Switching Controllers Part Context

This part belongs to the LTC7801 series of high-voltage synchronous buck controllers. It shares architectural similarities with other members like the LTC7801EFE but differs in temperature rating and packaging specifications. The series is engineered for robust performance in demanding environments where standard low-voltage controllers are insufficient.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other variants within the LTC7801 family such as the LTC7801EFE#PBF or LTC7801IFE#PBF, provided they meet the specific temperature and package requirements of the application.