LTC3863HMSE#PBF

DC DC Switching Controllers Overview

The LTC3863HMSE#PBF is a DC/DC switching controller from Analog Devices Inc., designed for inverting topologies. It converts a positive input voltage to a negative output using a single inductor. The device operates with an input supply range of 3.5V to 60V and supports adjustable switching frequencies between 50kHz and 850kHz. It features low quiescent current of 70µA and includes control characteristics such as current limit, enable, frequency control, and soft start. The component is housed in a 12-MSOP-EP package and functions within a junction temperature range of -40°C to 150°C.

DC DC Switching Controllers Feature Summary

• Inverts positive input voltages to negative outputs using a single inductor topology
• Integrates low quiescent current operation for efficient power management
• Provides comprehensive protection and control including current limit, enable, and soft start

DC DC Switching Controllers Applications

• Systems requiring negative rail generation from positive sources
• Industrial equipment power distribution
• Telecommunications infrastructure power supplies
• Embedded systems with mixed polarity requirements

DC DC Switching Controllers Procurement Notes

Verify the specific suffix and package type against the manufacturer's latest datasheet to ensure compatibility with design requirements. Confirm that the 12-MSOP-EP footprint matches the PCB layout. Check for any recent Product Change Notifications regarding material or manufacturing process updates before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller when an inverting buck-boost configuration is required to generate a negative voltage from a positive input rail. Ensure the operating input voltage stays within the 3.5V to 60V range. Consider the thermal performance of the MSOP-EP package for high-temperature environments up to 150°C TJ. Verify that the external components support the desired switching frequency range of 50kHz to 850kHz.

DC DC Switching Controllers Part Context

This component belongs to the LTC3863 family of inverting DC/DC controllers. It is distinct from standard buck controllers like the LTC3864 by its ability to produce negative outputs. The HMSE variant specifies the industrial temperature grade and the specific MSOP-EP packaging. It serves as a core power management IC for applications needing isolated or non-isolated negative rails.

DC DC Switching Controllers Replacement Considerations

LTC3863EMSE#PBF offers similar functionality but may differ in temperature rating or packaging quantity. Direct substitutes should maintain the inverting topology and compatible input voltage ranges. Verify pinout compatibility and control feature parity before swapping.