MAX6427DHUR

Overview

The MAX6427DHUR+T is a low-power, single-level battery monitor manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.6 V to 5.5 V and features an SOT-23-3 surface-mount package. The device functions as a power supply support circuit with internal hysteresis for accurate threshold detection. Designed for monitoring single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies, it asserts a low-battery output when the supply drops below the specified threshold. The component supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides single-level low-battery output indication with internal hysteresis
• Monitors single lithium-ion or multicell alkaline/NiCd/NiMH power supplies
• Includes minimum timeout period to ensure supply voltage stabilization before enabling system activity

Applications

• Single lithium-ion cell monitoring
• Multicell alkaline power supply monitoring
• NiCd/NiMH battery pack supervision

Procurement Notes

Verify the exact suffix configuration against official documentation, as variations such as +T indicate reel packaging. Confirm RoHS compliance status through manufacturer certificates. Check current availability status, as this product line may be discontinued or subject to limited supply constraints. Ensure the specific part number matches the required threshold voltage and package type for your design.

Selection Notes

Select this component for applications requiring simple, low-cost battery level monitoring without complex communication interfaces. Consider the SOT-23-3 package size for space-constrained designs. Verify that the single-level output meets the system's need for distinguishing between good, weak, and empty battery states via external logic or thresholds.

Part Context

The MAX6427 belongs to the MAX6427–MAX6438 family of low-power battery monitors. This series includes both single-level and dual-level variants designed to indicate three battery conditions: good, weak, and empty. The family is optimized for portable electronics where low quiescent current and minimal component count are critical for extending battery life.

Replacement Considerations

Other members of the MAX6427–MAX6438 family, such as the MAX6428 or MAX6429, offer similar functionality but may differ in threshold voltages or package options. Dual-level variants like the MAX6430 provide additional output indicators. Verify pin compatibility and electrical specifications before substitution.