MAX6338KUB+

Overview

The MAX6338KUB+ is a quad voltage monitor manufactured by Analog Devices Inc./Maxim Integrated, designed to supervise up to four independent power supply rails simultaneously. It operates within a supply voltage range of 2.5V to 5.5V and features an active-low open-drain reset output with a minimum timeout period of less than 1ms. The device utilizes a 10-pin uMAX/uSOP surface-mount package and maintains an operating temperature range from -40°C to +85°C. Factory-trimmed threshold voltages include 2.63V, 4.38V, adjustable inputs, and -4.38V for negative rail monitoring. It achieves a typical accuracy of 2.5% over the specified temperature range.

Feature Summary

• Simultaneous supervision of four distinct voltage rails without requiring external components
• Integrated adjustable input option allowing flexible threshold configuration via high-impedance comparator
• Active-low open-drain reset signal generation with rapid response time

Applications

• Portable equipment requiring multi-rail power management
• Battery-powered systems with negative voltage rails
• Embedded controllers needing simultaneous supply validation

Procurement Notes

Verify the specific suffix KUB against official datasheets to confirm exact threshold configurations. Confirm RoHS compliance status and lead times directly with authorized distributors. Ensure the 10-uMAX package dimensions match the target PCB footprint. Validate that the required threshold voltages align with system design specifications before finalizing procurement.

Selection Notes

Select this component when simultaneous monitoring of multiple supplies is required in a compact form factor. The inclusion of an adjustable channel provides flexibility for non-standard voltage levels. Consider the low quiescent current for battery-operated applications. Verify that the open-drain output interface is compatible with the downstream logic or microcontroller reset input requirements.

Part Context

This part belongs to the MAX6338 family of quad voltage monitors, which are optimized for space-constrained designs. The series offers various factory-trimmed options to cover common voltage standards such as 5V, 3.3V, and 1.8V. The uMAX package allows for high-density board layouts while maintaining reliable performance across industrial temperature ranges.

Replacement Considerations

Direct substitutes within the MAX6338 family may be available depending on specific threshold requirements. Verify pin compatibility and electrical characteristics before substitution.