MAX9017AEKA-T

Overview

The MAX9017AEKA-T is a dual precision nanoPower comparator in an 8-pin SOT-23 package. It operates from a supply voltage of 1.8V to 5.5V with a typical supply current of 1.2µA at 1.8V and 2.3µA at 5.5V. The device features a push-pull output stage capable of rail-to-rail swing with up to ±6mA drive. It includes an internal 1.236V ±1% reference, input offset voltage max of 5mV, and 4mV internal hysteresis. Input common-mode range extends 200mV beyond the rails.

Feature Summary

• Features Beyond-the-Rails inputs allowing operation 200mV beyond supply limits
• Includes an onboard 1.236V ±1% precision voltage reference
• Push-pull output stage provides rail-to-rail swing with high drive capability
• Internal 4mV hysteresis ensures clean switching without external components

Applications

• 2-cell battery monitoring and management systems
• Ultra-low power portable devices
• Mobile communications equipment
• Threshold detectors and window detectors
• Automotive sensing applications

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration. Confirm A-grade designation matches the required 1.236V ±1% reference tolerance. Ensure the /V suffix variant is not required if automotive qualification under AEC-Q100 Grade 3 is necessary for the target application environment.

Selection Notes

Select this component when ultra-low quiescent current is critical alongside precise threshold detection. The integrated reference eliminates external resistor networks, saving board space. Choose over open-drain variants (MAX9018) if active sourcing capability and rail-to-rail output swing are required for direct logic interfacing.

Part Context

This part belongs to the MAX9015–MAX9020 family of nanoPower comparators designed for low-voltage battery-powered applications. Unlike single-channel versions, the dual configuration integrates two independent comparators in a compact SOT-23 footprint. The A-grade specification specifically guarantees tighter reference voltage accuracy compared to B-grade alternatives.

Replacement Considerations

MAX9018AEKA-V+T: Open-drain output version with identical electrical characteristics except for output stage topology.

FAQ

Does the MAX9017AEKA-T support input voltages exceeding the supply rails?

Yes, the device features Beyond-the-Rails inputs that allow the common-mode input voltage range to extend 200mV beyond both VEE and VCC.

What is the function of the REF pin on the MAX9017AEKA-T?

The REF pin provides access to the internal 1.236V ±1% bandgap reference voltage, which can be used as a fixed threshold or buffered for other circuit needs.