ICL7665CPA

Supervisors Overview

The ICL7665CPA 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 draws a typical operating current of 3µA. Trip points are externally programmable via resistors for any voltage greater than 1.3V. It utilizes a monolithic, low-power CMOS design with on-board hysteresis.

Supervisors Feature Summary

• Dual comparator architecture with precision internal reference for independent over/undervoltage warning
• Externally programmable trip points using external resistors
• Low power consumption with typical 3µA operating current
• Integrated on-board hysteresis for noise immunity

Supervisors Applications

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

Supervisors Procurement Notes

Verify the specific suffix 'CPA' against official Analog Devices documentation to confirm package type (PDIP) and temperature rating. Ensure compatibility with existing board layouts if replacing older variants. Confirm RoHS compliance status as legacy Maxim Integrated products may have varying environmental declarations depending on manufacturing date codes.

Supervisors Selection Notes

Select this component when dual-channel voltage supervision is required with adjustable thresholds. The external resistor programming allows flexibility for various voltage rails. Consider the 3µA quiescent current for battery-operated applications. Verify that the required monitoring voltage exceeds the 1.3V minimum threshold for proper detector operation.

Supervisors Part Context

The ICL7665 belongs to the Maxim Integrated line of supervisory circuits designed for system reliability. It serves as a dedicated voltage monitor distinct from general-purpose comparators by integrating fixed internal references and hysteresis. This family targets embedded systems requiring robust fault detection without complex external circuitry.

Supervisors Replacement Considerations

ICL7665ACSA+ is listed as a parameter-equivalent alternative.