MAX6338AUB+

Overview

The MAX6338AUB+ is a quad voltage monitor supervising four independent supply rails within a compact 10-UMAX package. It features open-drain active-low outputs and operates from 2.5V to 5.5V with 35µA quiescent current. Thresholds include fixed 3V, 4.5V, -4.25V, and an adjustable channel. Accuracy is ±2.5% over the -40°C to +85°C range.

Feature Summary

• Monitors up to four independent voltage supplies simultaneously without external components
• Provides open-drain active-low reset signals for each monitored rail
• Integrates a programmable threshold channel alongside fixed voltage references
• Operates reliably across industrial temperature ranges with low power consumption

Applications

• Multi-rail embedded system power supervision
• Industrial control board voltage monitoring
• Telecommunications equipment power integrity checks
• Portable device battery and logic rail oversight

Procurement Notes

Verify the specific suffix 'A' against your design requirements, as it denotes distinct threshold voltages compared to other variants like 'B' or 'O'. Confirm the 10-UMAX package availability matches your PCB footprint constraints. Ensure the active-low open-drain output configuration aligns with your microcontroller input specifications before finalizing procurement orders.

Selection Notes

Select this component when simultaneous monitoring of four distinct voltage levels is required in a space-constrained design. The inclusion of an adjustable threshold allows flexibility for non-standard rails. Verify that the open-drain output capability suits your pull-up resistor network and logic level interface requirements for reliable system reset generation.

Part Context

This part belongs to the MAX6338 family of quad voltage monitors from Analog Devices/Maxim Integrated. It serves as a specialized power management IC designed for systems requiring comprehensive multi-supervision. The A variant specifically targets applications needing precise fixed thresholds combined with one configurable monitoring channel for versatile power architecture support.

Replacement Considerations

Direct substitutes include MAX6338BUB+ and MAX6338OUB+. Verify threshold voltage compatibility, as different suffixes indicate varying fixed reference values. Ensure the replacement maintains the same 10-UMAX package and electrical characteristics to guarantee pin-to-pin functionality without circuit redesign.