LTC3882IUJ-1#PBF

DC DC Switching Controllers Overview

The LTC3882IUJ-1#PBF is a dual-channel PolyPhase DC/DC synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates with a constant frequency, leading-edge modulation voltage mode architecture to ensure excellent transient response and output regulation. The device supports an input voltage range of 7V to 14V and provides two independent outputs. Typical configurations include 1V at 40A and 1.8V at 30A operation at a switching frequency of 500kHz. It features a PMBus compliant serial interface for digital power system management.

DC DC Switching Controllers Feature Summary

• Dual-channel PolyPhase architecture for high-current delivery
• PMBus compliant serial interface for digital control
• Voltage mode architecture with leading-edge modulation
• Optimized for excellent transient response and regulation

DC DC Switching Controllers Applications

• High-performance computing systems
• Telecommunications infrastructure power supplies
• Industrial distributed power architectures
• FPGA core voltage regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the IUJ package designation matches the required thermal and footprint specifications for the target PCB design. Ensure compatibility with external DrMOS power stages as the controller does not integrate internal power switches. Validate that the 7V to 14V input range aligns with the system bus voltage requirements.

DC DC Switching Controllers Selection Notes

Select this component when dual isolated or non-isolated buck outputs are required from a single controller. The PolyPhase capability allows for current sharing across multiple phases to reduce input and output ripple. Consider the 500kHz switching frequency for balancing efficiency and passive component size. Ensure the application requires PMBus communication for dynamic adjustment and monitoring capabilities.

DC DC Switching Controllers Part Context

This part belongs to the LTC3882 family of dual-output synchronous buck controllers. It is designed to drive external N-channel MOSFETs or integrated DrMOS modules. The device is distinct from single-output variants like the LTC3883 and higher voltage models such as the LTC3890. It serves as a central management unit for complex multi-rail power distribution networks.

DC DC Switching Controllers Replacement Considerations

Direct substitutes within the same family include the LTC3882EUJ#PBF, which shares identical electrical characteristics but may differ in package type or temperature grade. Verify pin-to-pin compatibility before substitution. Other Analog Devices dual buck controllers may require significant circuit redesign due to differences in interface protocols or operating voltage ranges.