ICL7665AIJA

Supervisors Overview

The ICL7665AIJA is a microprocessor voltage monitor featuring dual overvoltage and undervoltage detection capabilities. It operates within a supply voltage range of 1.6V to 16V, monitoring input voltages from 1.3V upwards. The device utilizes an externally programmable threshold mechanism via external resistors, allowing trip points to be set for any voltage greater than 1.3V. It incorporates on-board hysteresis to prevent output chatter during threshold transitions. The component is designed with a monolithic, low-power CMOS architecture, ensuring reliable performance in various power management applications.

Supervisors Feature Summary

• Dual comparator design with precision internal reference for accurate voltage monitoring
• Externally programmable trip points allow flexible configuration for specific voltage thresholds
• On-board hysteresis ensures stable operation by preventing output oscillation near trip points

Supervisors Applications

• Microprocessor voltage monitoring systems
• Low-battery detection circuits
• Power-fail and brownout detection mechanisms
• Battery backup switching logic
• Over/undervoltage protection in power supplies

Supervisors Procurement Notes

Verify the exact suffix 'AIJA' against official Analog Devices or Maxim Integrated documentation to confirm package type and temperature grade. Confirm RoHS compliance status as older variants may differ. Ensure the selected variant matches the required operating temperature range and pinout configuration for your specific PCB layout before finalizing procurement.

Supervisors Selection Notes

Select this component when precise, adjustable voltage monitoring is required without fixed internal thresholds. The external resistor programming allows customization for specific system voltages. Consider the 3µA typical operating current for battery-sensitive designs. Verify that the required monitoring voltage exceeds the 1.3V minimum limit for proper detector functionality.

Supervisors Part Context

The ICL7665 series belongs to the family of microprocessor supervisory circuits designed to detect abnormal power conditions. It serves as a critical interface between power supplies and digital logic, providing early warnings for voltage anomalies. The AIJA designation typically indicates a specific industrial temperature grade and package configuration within the broader ICL7665 product line.

Supervisors Replacement Considerations

Public confirmed substitute part numbers include ICL7665ACSA+ and ICL7665CSA+. These alternatives offer parameter equivalence but may differ in package style (SOIC vs. original). Verify pin compatibility and threshold accuracy specifications before substitution.