LT8611IUDD

Overview

The LT8611IUDD is a synchronous step-down DC-to-DC converter manufactured by Analog Devices Inc. It supports an input voltage range of 5.4V to 42V and delivers up to 2A output current. The device operates at a switching frequency of 2MHz, enabling high efficiency and reduced solution size while avoiding AM band interference. It maintains high duty cycle capability for low dropout performance.

Feature Summary

• Synchronous buck topology with integrated power switches
• Fixed 2MHz switching frequency for compact passive component selection
• High duty cycle operation for efficient low-output voltage conversion

Applications

• Industrial point-of-load regulation
• Battery-powered equipment power management
• General-purpose DC/DC conversion in embedded systems

Procurement Notes

Verify the specific suffix 'IUDD' against the official Analog Devices datasheet to confirm package type, temperature grade, and tape/reel specifications. Ensure compatibility with required thermal dissipation and PCB layout guidelines specified in the manufacturer's documentation before procurement.

Selection Notes

Select this component when a wide input voltage range up to 42V is required alongside moderate output current capabilities. The 2MHz frequency is suitable for applications prioritizing small footprint over ultra-low noise, as it avoids the AM radio band while allowing smaller inductors and capacitors compared to lower-frequency alternatives.

Part Context

The LT8611 series represents a family of synchronous buck regulators from Linear Technology (now Analog Devices). The IUDD variant specifically denotes the DFN-16 package configuration. This part integrates control logic and power MOSFETs into a single monolithic solution for space-constrained designs.

Replacement Considerations

Cross-reference with LT8610 or LT8610A series parts if higher current capacity or different quiescent current profiles are needed. Verify pinout and thermal pad connectivity matches the target PCB design when substituting.