ICL7673CBA-T

Overview

The ICL7673CBA-T is an OR controller and source selector switch manufactured by Renesas Electronics Corporation. It supports N-channel and P-channel FETs in a 2:1 input-to-output configuration. The device operates within a supply voltage range of 2.5V to 15V, with a maximum output current of 38mA and a typical supply current of 1.5µA. It is housed in an 8-SOIC package (0.154 inch width) and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Integrates control logic for dual-source selection using external N-channel or P-channel field-effect transistors.
• Provides automatic redundancy switching between two power inputs to maintain continuous system operation.
• Designed for low quiescent current consumption to minimize standby power loss during active monitoring.

Applications

• Battery backup systems requiring seamless transition between primary and secondary power sources.
• Industrial equipment demanding high reliability through redundant power architectures.
• Automotive grade applications involving large current switching and power management.

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when ordering. Confirm RoHS compliance status as documentation may vary by production batch. Check component availability status, as this part number has been reported as discontinued in some distributor listings. Ensure the selected variant matches the required SOIC-8 package dimensions and thermal specifications for the target application environment.

Selection Notes

Select this component when designing circuits that require automated OR-ing of two independent DC power rails. It is suitable for systems utilizing both N-channel and P-channel MOSFETs for ideal diode emulation. Consider the 38mA internal limit and external FET capabilities when sizing for load requirements. Verify compatibility with the 2.5V to 15V control voltage range against the system's available rail voltages.

Part Context

This IC belongs to the ICL7673 family of OR controllers and source selectors. It serves as a power management solution for ensuring uninterrupted power delivery in critical electronics. The device simplifies the implementation of redundant power supplies by handling the control logic for external switching elements, reducing design complexity compared to discrete solutions.

Replacement Considerations

Public records indicate the ICL7673CBAZA is a related variant within the same product family. Both share the core OR controller functionality and 8-SOIC package. Verify if the specific suffix differences relate to packaging format or minor electrical tolerances before substituting.