ISL88002IE44Z-TK

Supervisors Overview

The ISL88002IE44Z-TK is a single-channel voltage supervisory integrated circuit manufactured by Renesas Electronics Corporation. It operates within an extended supply voltage range of 1.8 V to 5.5 V, making it suitable for various low-power applications. The device features a precise threshold voltage of 4.38 V with an accuracy of 1.2%. It provides an active-low open-drain reset output and includes a minimum reset timeout of 190 ms. Designed for surface-mount installation, the component is housed in a compact SOT-23-3 package. It supports a wide operating temperature range from -40°C to +85°C and consumes a typical quiescent current of 350 nA.

Supervisors Feature Summary

• Provides reliable system monitoring through a dedicated single-channel voltage supervision function with high precision.
• Features an active-low open-drain reset output compatible with standard digital logic interfaces.
• Ensures stable operation across industrial temperature ranges with minimal power consumption.
• Delivers consistent reset timing characteristics to prevent premature system restarts during power transitions.

Supervisors Applications

• Portable electronic devices requiring efficient power management
• Industrial control systems needing robust voltage supervision
• Battery-powered equipment utilizing low-voltage thresholds

Supervisors Procurement Notes

Verify the specific suffix 'TK' against official Renesas documentation to confirm reel packaging specifications and tape dimensions. Ensure compatibility with existing PCB footprints for the SOT-23-3 package. Confirm that the 4.38 V threshold aligns precisely with target circuit requirements. Check for any recent Product Change Notices regarding labeling or manufacturing site updates. Validate RoHS compliance status for final assembly integration.

Supervisors Selection Notes

Select this component when a fixed 4.38 V threshold is required for single-rail monitoring. Consider the open-drain output configuration for level-shifting needs. Evaluate the 350 nA quiescent current against strict battery life constraints. Compare the SOT-23-3 footprint against available board space. Ensure the 190 ms reset delay meets system startup timing requirements without excessive wait periods.

Supervisors Part Context

This part belongs to the ISL88002 series of low-power voltage supervisors. The series offers various threshold options to accommodate different supply rails. The IE prefix typically denotes specific temperature and package variants within the Renesas portfolio. This family focuses on simplicity and reliability for basic power management tasks without complex watchdog or manual reset features.

Supervisors Replacement Considerations

ISL88002IE44Z-T7A: Same threshold and function but in SC-70-3 package. Verify footprint compatibility before substitution. ISL88002IH23Z-T: Different threshold (2.32 V) and package; not a direct functional substitute for 4.38 V applications. Only consider if voltage requirements change.