LTC3780IUH#PBF

DC DC Switching Controllers Overview

The LTC3780IUH#PBF is a high-efficiency, synchronous four-switch buck-boost switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4 V to 36 V and supports output voltages from 800 mV to 30 V. The device delivers up to 10 A of output current with a single output configuration. Key electrical parameters include a switch frequency of 400 kHz, a maximum duty cycle of 99%, and a supply voltage range of 4 V to 30 V. It features a load regulation of -0.1% and operates reliably across a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Synchronous four-switch topology enables efficient step-down, step-up, and battery charge profile operation
• Integrated power stage drivers support external N-channel MOSFETs for high-current applications
• Programmable switching frequency allows optimization for size and efficiency trade-offs
• Comprehensive protection features include cycle-by-cycle current limiting, thermal shutdown, and soft-start

DC DC Switching Controllers Applications

• Battery-powered systems requiring extended runtime through wide input voltage ranges
• Industrial equipment needing stable power delivery during battery discharge cycles
• Automotive electronics operating with fluctuating supply voltages
• Portable devices utilizing multi-cell lithium-ion or lithium-polymer batteries

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm that the IUH designation corresponds to the industrial temperature grade (-40°C to +125°C) and the QFN-32 package type. Ensure compatibility with external component selections regarding voltage ratings and current capabilities before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller when designing circuits that must handle both buck and boost operations seamlessly. Consider the 400 kHz default switching frequency for balancing component size against efficiency. Evaluate the need for external compensation networks based on the desired loop stability. Verify that the chosen MOSFETs can handle the peak currents associated with the 10 A output capability within the specified thermal constraints.

DC DC Switching Controllers Part Context

This component belongs to the LTC3780 family of power management ICs designed for flexible DC-DC conversion. It serves as a controller rather than an integrated switch, requiring external power stages. The part is categorized under PMIC - Power Management ICs and specifically functions as a DC DC Switching Controller. It is distinct from fixed-frequency regulators due to its programmable nature and wide input/output voltage flexibility.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.