LTC3822EDD#PBF

DC DC Switching Controllers Overview

The LTC3822EDD#PBF is a synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 2.75 V to 4.5 V and supports output voltages from 600 mV to 4.45 V. The device delivers up to 20 A of output current through a single output channel. Switching frequency is adjustable between 250 kHz and 750 kHz, while quiescent supply current is specified at 360 uA. It functions within a temperature range of -40°C to +85°C and utilizes a DFN-12 surface-mount package.

DC DC Switching Controllers Feature Summary

• Eliminates the need for external sense resistors in the power path
• Integrates inductor DC resistance (DCR) sensing for precise current monitoring
• Supports clock synchronization for multi-phase or parallel operation

DC DC Switching Controllers Applications

• Point-of-load regulation for high-density digital circuits
• Power management for telecommunications infrastructure equipment
• Industrial control systems requiring efficient buck conversion

DC DC Switching Controllers Procurement Notes

Verify the specific suffix designation against official documentation, as variations such as #TRPBF indicate tape-and-reel packaging while #PBF denotes tube packaging. Confirm that the DFN-12 package dimensions align with your PCB footprint requirements. Ensure compatibility with the intended switching frequency range and thermal dissipation capabilities for your specific application environment.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring high efficiency without the cost and board space associated with current-sense resistors. It is suitable for applications powered by single-cell lithium-ion batteries or 3.3 V rails where low input voltage operation is necessary. Consider the DFN-12 package size and thermal performance relative to the required 20 A output capability.

DC DC Switching Controllers Part Context

This part belongs to the LTC3822 family of synchronous buck controllers designed for high-current, low-voltage applications. It distinguishes itself by utilizing internal DCR sensing rather than external shunt resistors, thereby improving overall system efficiency. The controller is optimized for use in portable and industrial electronics where space constraints and power efficiency are critical design parameters.

DC DC Switching Controllers Replacement Considerations

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