MAX9028EBT-T

Overview

The MAX9028EBT-T is a nanopower comparator in a 6-bump UCSP package. It operates on a supply voltage range of +1.8V to +5.5V with a typical supply current of 0.6µA at +5V and 0.75µA at +1.8V. The device features an open-drain output stage capable of sinking up to 33mA at +5V. Input common-mode voltage extends from VEE - 0.2V to VCC + 0.2V, providing Beyond-the-Rails capability. Internal hysteresis is set at 4mV, and input offset voltage is typically 0.3mV at +25°C. Propagation delay ranges from 14µs to 16µs depending on the transition direction and supply voltage.

Feature Summary

• Ultra-low power consumption requiring only 0.6µA supply current
• Open-drain output stage suitable for mixed-voltage logic translation
• Input voltage range extends 200mV beyond the supply rails
• Internal 4mV hysteresis ensures clean switching without external components

Applications

• 2-cell battery monitoring and management systems
• Logic-level translation between different voltage domains
• Zero-crossing detection circuits
• Ultra-low-power portable instrumentation

Procurement Notes

Verify the specific ordering suffix EBTT against official manufacturer documentation to confirm the tape-and-reel packaging format and temperature grade. Ensure that the open-drain output configuration aligns with the pull-up requirements of the target system interface. Cross-reference the UCSP package dimensions with the PCB land pattern specifications provided in the datasheet to guarantee mechanical compatibility during assembly.

Selection Notes

Select this component when an open-drain output is required for wired-OR logic or level shifting rather than a push-pull driver. The absence of an internal reference distinguishes it from the MAX9025/MAX9026 variants, making it suitable for applications using external threshold voltages. Consider the propagation delay characteristics if signal timing precision is critical compared to faster comparator families.

Part Context

This part belongs to the MAX9025–MAX9028 family of nanopower comparators designed for space-constrained portable electronics. Unlike the MAX9025/MAX9026 which include an internal 1.236V reference, the MAX9028 variant omits this feature to minimize current draw further. It shares the same miniature 6-bump UCSP footprint as its siblings, allowing for flexible design choices regarding output drive type and reference integration within the same package form factor.

Replacement Considerations

The MAX9027EBT-T serves as a direct functional substitute if a push-pull output is preferred over the open-drain configuration. Other members of the MAX9025–MAX9028 series share identical pinouts and physical dimensions but differ in internal reference presence and output stage topology.