MAX40003ANS12+T

Overview

The MAX40003ANS12+T is a nanoPower single comparator in an ultra-tiny 4-bump WLP package with a 0.73mm x 0.73mm footprint. It operates on a supply voltage range of 1.7V to 5.5V and consumes only 500nA of supply current. The device features an inverting input, open-drain output, and a factory-trimmed internal reference voltage of 1.222V. It maintains high input impedance even when powered down and includes internal filtering for RF immunity. The component is fully specified over the -40°C to +125°C automotive temperature range.

Feature Summary

• Ultra-low power consumption preserves battery life in portable applications
• Tiny 4-bump wafer-level package saves board space
• Internal hysteresis provides noise immunity and glitch-free operation
• High input impedance maintained during power-down states

Applications

• Mobile devices
• Portable medical devices
• Notebook computers
• Electronic toys

Procurement Notes

Verify the specific ordering suffix to confirm the presence of the internal 1.222V reference voltage and the open-drain output configuration. Ensure the selected package variant matches the required PCB land pattern for the 4-bump WLP format. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this part when board space is extremely limited and low quiescent current is critical. The inverting input polarity requires the output to go low when the input exceeds the 1.222V threshold. An external pullup resistor is mandatory for proper operation due to the open-drain output structure. Verify that the application logic levels are compatible with the open-drain interface requirements.

Part Context

This component belongs to the MAX40002–MAX40005 family of nanoPower comparators designed for compact, low-voltage applications. The family offers various combinations of input polarities, output types, and internal reference voltages. The MAX40003 variant specifically provides an inverting input configuration within the ultra-compact 4-bump WLP package.

Replacement Considerations

Cross-reference with other MAX40003 variants such as MAX40003ANS02+T or MAX40003ANS05+T if different internal reference voltages are required. Verify pin compatibility and electrical characteristics against the original design specifications.