MAX6427EIUR+

Overview

The MAX6427EIUR+ is a low-power, single-level battery monitor manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1.6 V to 5.5 V and is housed in an SOT-23-3 surface-mount package. The device functions as a power-supply support circuit with internal hysteresis to indicate battery conditions. It asserts a low-battery output when the supply voltage drops below a specified threshold and deasserts it upon rising above a high threshold after a minimum timeout period.

Feature Summary

• Provides a single low-battery output indicator to signal three distinct battery states: good, weak, or empty.
• Features internal hysteresis to prevent output oscillation during voltage transitions near the threshold.
• Includes a minimum timeout period to ensure supply voltages stabilize before enabling system activity.

Applications

• Monitoring single lithium-ion (Li+) cells
• Monitoring multicell alkaline power supplies
• Monitoring NiCd/NiMH power supplies

Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm RoHS compliance status via official documentation. Check for end-of-life notifications or discontinuation notices from the manufacturer. Ensure the specific suffix matches required packaging and temperature specifications. Validate that the sourcing partner provides valid traceability records.

Selection Notes

Select this component for applications requiring simple, low-power battery level indication. Choose based on the specific low-voltage threshold requirements for the target battery chemistry. Consider the SOT-23-3 package size for space-constrained designs. Verify compatibility with the system's operating voltage range. Evaluate the need for hysteresis to maintain stable operation in noisy environments.

Part Context

This part belongs to the MAX6427–MAX6438 family of battery monitors. The family includes variants with single or dual low-battery output indicators. These devices are designed to manage system power modes based on battery health. The MAX6427 series specifically offers single-level monitoring options for various battery types.

Replacement Considerations

Public confirmed substitute part numbers only; omit otherwise.