MAX9025EBT+CKN

Overview

The MAX9025EBT+CKN is a nanopower comparator from the MAX9025 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage down to +1.8V and features an internal 1.236V ±1% reference. The device draws an ultralow supply current of 1µA with the reference enabled. It utilizes a space-saving UCSP package measuring 1mm x 1.52mm. Input voltage range extends 200mV beyond the rails, ensuring reliable operation in low-voltage environments.

Feature Summary

• Ultra-low power consumption with 1µA supply current when using the internal reference
• Integrated precision 1.236V ±1% reference for simplified design
• Beyond-the-Rails input capability extending 200mV past supply lines
• Compact UCSP package footprint for space-constrained applications

Applications

• 2-cell battery monitoring and management systems
• Ultra-low-power portable electronic devices
• Mobile communications equipment
• Notebooks and PDAs
• Telemetry and remote sensing systems

Procurement Notes

Verify the specific suffix CKN against official documentation to confirm tape-and-reel packaging details. Confirm RoHS compliance status through the manufacturer's datasheet. Check current lifecycle status as components may be subject to discontinuation. Ensure the UCSP package dimensions match your PCB layout requirements before finalizing procurement.

Selection Notes

Select this component for designs requiring minimal quiescent current and integrated reference voltage. The Beyond-the-Rails inputs allow sensing near ground or supply limits without external level shifting. Compare against MAX9027/MAX9028 if the internal reference is unnecessary to achieve lower 0.6µA current draw. Ensure the UCSP package size fits the available board real estate.

Part Context

The MAX9025 belongs to a family of nanopower comparators designed for battery-operated applications. It shares features with MAX9026, MAX9027, and MAX9028 variants, differing primarily in output type and reference inclusion. This series targets mobile and medical instruments where power efficiency and small form factors are critical constraints.

Replacement Considerations

MAX9026EBT+ offers open-drain output instead of push-pull. MAX9027EBT+ and MAX9028EBT+ lack the internal reference but consume only 0.6µA. Verify pin compatibility and output drive requirements when substituting these variants.