ICL7665SCBA

Supervisors Overview

The ICL7665SCBA is a CMOS micropower over/under voltage detector manufactured by Harris Corporation (Intersil). It integrates two individually programmable voltage detectors on a single chip, drawing a typical operating current of 3µA. The device operates from supply voltages between 1.6V and 16V, monitoring inputs from 1.3V upwards. It features externally programmable trip points via resistors and includes onboard hysteresis. The component is housed in an SOIC-8 surface-mount package.

Supervisors Feature Summary

• Dual voltage detection capability with individually programmable trip points using external resistors
• Micropower operation with typical current consumption of 3µA for battery efficiency
• Integrated onboard hysteresis to prevent output oscillation during threshold transitions
• Wide supply voltage range supporting operation from 1.6V to 16V

Supervisors Applications

• Microprocessor voltage monitoring systems
• Low-battery detection circuits
• Power-fail and brownout detection mechanisms
• Battery backup switching applications

Supervisors Procurement Notes

Verify the manufacturer origin carefully, as the ICL7665 series was originally developed by Intersil and later acquired by Maxim Integrated, now part of Analog Devices. Confirm that the specific suffix 'SCBA' corresponds to the intended package variant and temperature rating. Ensure compliance with RoHS directives if required for the final assembly, noting that older Harris/Intersil stock may not meet current environmental standards.

Supervisors Selection Notes

Select this component when low quiescent current is critical for extending battery life in portable instrumentation. The externally adjustable thresholds allow customization for specific voltage warning levels without changing internal references. Consider the SOIC-8 package constraints for PCB layout. Verify that the required monitoring voltage range falls within the 1.3V to several hundred volts limit supported by the external resistor divider network.

Supervisors Part Context

This component belongs to the ICL7665 family of supervisory circuits designed for power management protection. It serves as a dedicated monitor for detecting abnormal supply conditions in digital logic systems. The device provides a reliable method for signaling microprocessors about impending power failures or overvoltage events, ensuring system integrity through early warning signals.

Supervisors Replacement Considerations

The ICL7665ACSA+ and ICL7665CSA+ are documented parameter-equivalent alternatives available from Analog Devices Inc./Maxim Integrated.