LTC7818IUJ#WTRPBF

DC DC Switching Controllers Overview

The LTC7818IUJ#WTRPBF is a synchronous Buck/Buck-Boost switching controller manufactured by Analog Devices Inc. It features three independent outputs with a maximum duty cycle of 100%. The device operates within an input voltage range of 4V to 40V and supports switching frequencies from 100kHz to 3MHz. It is housed in a 40-lead QFN package (6x6mm) and is rated for automotive applications under AEC-Q100 standards, functioning reliably between -40°C and +125°C junction temperature.

DC DC Switching Controllers Feature Summary

• Supports non-isolated Buck and Buck-Boost topologies for flexible power conversion
• Integrates three independent output channels for multi-rail systems
• Includes built-in current limit, enable, frequency control, power good, and soft-start functions

DC DC Switching Controllers Applications

• Automotive infotainment and body control modules requiring multiple regulated rails
• Industrial systems needing isolated or non-isolated DC-DC conversion stages
• Telecommunications infrastructure power distribution units

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #WTRPBF against official Analog Devices documentation to confirm tape-and-reel packaging and lead-free status. Ensure the component matches the required automotive qualification grade. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit sources. Confirm that the 40-QFN package dimensions align with your PCB footprint requirements before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring simultaneous Buck and Buck-Boost regulation across three channels. It is suitable for applications demanding high efficiency through synchronous rectification and wide input voltage ranges up to 40V. Consider the 3MHz maximum switching frequency for compact passive component sizing. Verify thermal performance within the specified -40°C to +125°C operating range for your specific enclosure constraints.

DC DC Switching Controllers Part Context

This component belongs to the LTC7818 series of high-performance synchronous step-down controllers. It is designed for complex power management tasks in automotive and industrial environments. The device integrates advanced control loops to maintain stability across varying load conditions. It serves as a core power stage driver for external MOSFETs in multi-output power supply designs.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.