MAX9017BEKA-T

Overview

The MAX9017BEKA-T is a dual precision nanoPower comparator from Analog Devices/Maxim Integrated, housed in an 8-pin SOT-23 package. It operates on a supply voltage range of 1.8V to 5.5V with a typical supply current of 1.2µA at 25°C. The device features B-grade internal reference accuracy of 1.24V ±1.75% and input offset voltage (Vos) max of 5mV at 25°C. It includes built-in 4mV hysteresis and utilizes Beyond-the-Rails inputs extending 200mV beyond the supply rails. The output stage is CMOS push-pull capable of driving loads up to 6mA.

Feature Summary

• Features Beyond-the-Rails inputs allowing operation with signals exceeding supply limits
• Includes integrated B-grade 1.24V reference for threshold detection applications
• Push-pull output stage provides rail-to-rail swing without crowbar currents
• Internal 4mV hysteresis ensures clean switching against noise

Applications

• Two-cell battery monitoring and management systems
• Ultra-low power mobile communications devices
• Threshold detectors and window detectors
• Medical instruments requiring low quiescent current
• Automotive sensing applications

Procurement Notes

Verify the specific suffix 'EKA' corresponds to the tape-and-reel packaging format required for automated assembly. Confirm that the '/V' designation indicates AEC-Q100 Grade 3 automotive qualification if operating in harsh environments. Ensure the B-grade reference tolerance meets the system's threshold accuracy requirements compared to the A-grade variant.

Selection Notes

Select this component when ultra-low static current consumption is critical alongside precise voltage comparison. The dual configuration in an 8-pin SOT-23 package saves board space compared to single-channel alternatives. Choose this part over open-drain versions if active high-side sourcing capability is needed for direct logic interfacing without external pull-up resistors.

Part Context

This device belongs to the MAX9015–MAX9020 family of nanoPower comparators designed for battery-operated equipment. Unlike the MAX9015/MAX9016 which offer different output types, the MAX9017 series specifically integrates a push-pull output stage. It shares the same low-power architecture as the MAX9018 but differs in pinout compatibility and specific grading characteristics defined by the manufacturer.

Replacement Considerations

The MAX9017AEKA-V+T serves as a functional substitute offering A-grade reference precision instead of B-grade. Designers must verify that the tighter 1% reference tolerance aligns with their specific circuit requirements before swapping between these variants.