ICL7665BCJA

Supervisors Overview

The ICL7665BCJA 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 externally programmable trip points via resistors, allowing configuration for any voltage greater than 1.3V. It incorporates on-board hysteresis and draws a typical operating current of only 3µA. The component is designed in a monolithic, low-power CMOS process and provides active high or open-drain outputs to warn systems of power supply faults.

Supervisors Feature Summary

• Dual voltage detectors with individually programmable trip points and hysteresis
• Low-power CMOS design requiring typically 3µA operating current
• Wide supply voltage operation from 1.6V to 16V
• Externally settable thresholds using external resistors

Supervisors Applications

• Microprocessor voltage monitoring
• Low-battery detection
• Power-fail and brownout detection
• Battery backup switching
• Over/undervoltage protection

Supervisors Procurement Notes

Verify the specific suffix 'BCJA' against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with existing board layouts if replacing older variants. Confirm RoHS compliance status for the specific manufacturing batch. Cross-reference datasheet revisions to ensure feature parity with system requirements.

Supervisors Selection Notes

Select this component when precise, adjustable voltage thresholds are required for dual-channel monitoring. The external resistor programming offers flexibility compared to fixed-threshold supervisors. Consider the 3µA quiescent current for battery-operated applications. Verify that the 1.6V minimum supply voltage aligns with the system's lowest operating condition.

Supervisors Part Context

The ICL7665 series belongs to Maxim Integrated's family of micropower supervisory circuits. It serves as a general-purpose voltage detector for protecting sensitive electronics from power anomalies. The device is part of a broader portfolio including variants like the ICL7665A and ICL7665S, distinguished by accuracy and package options.

Supervisors Replacement Considerations

ICL7665ACSA+ is listed as a parameter-equivalent replacement for discontinued ICL7665BCSA models. Verify pinout and electrical specifications before substitution.