LTC3872IDDB-1#TRPBF

DC DC Switching Controllers Overview

The LTC3872IDDB-1#TRPBF is a constant frequency current mode boost DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 2.75V to 9.8V and utilizes a DFN-8 package for surface mount installation. The device features a fixed switching frequency of 550kHz and draws an operating supply current of 0.25mA. It provides one output configured as a transistor driver with control characteristics including current limiting, enable functionality, and soft start capabilities.

DC DC Switching Controllers Feature Summary

• Implements constant frequency current mode control architecture for boost converter applications
• Enables design simplification through no external sense resistor (No RSENSE) operation
• Integrates programmable soft start and cycle-by-cycle current limit protection

DC DC Switching Controllers Applications

• Battery-powered portable equipment requiring efficient step-up conversion
• Industrial systems utilizing single-cell lithium-ion or alkaline battery sources
• General-purpose boost converter designs in distributed power architectures

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IDDB variant corresponds to the industrial temperature grade (-40°C to 85°C). Ensure compatibility with the required DFN-8 footprint during procurement planning. Cross-reference the manufacturer's latest documentation for any updates regarding RoHS compliance status.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring a compact solution without external current sensing resistors. The fixed 550kHz frequency allows for smaller passive components compared to lower frequency alternatives. Consider the 9.8V maximum input voltage limit when designing for higher voltage source environments. Evaluate thermal performance requirements based on the DFN-8 package thermal characteristics.

DC DC Switching Controllers Part Context

This part belongs to the LTC3872 family of non-synchronous boost controllers designed for high efficiency. The IDDB-1 designation specifies the industrial temperature range and the -1 pin configuration variant. It serves as a controller requiring external MOSFETs, distinguishing it from integrated monolithic converters in the broader portfolio.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other parts within the LTC3872 family such as the LTC3872ETS8#TRPBF, which offers the same functionality in a TSOT-23-8 package. Verify pinout compatibility before substituting packages.