MAX1924VEEE+

Overview

The MAX1924VEEE+ is a lithium-ion and lithium-polymer battery pack protection controller designed for three-series cell configurations. It monitors individual cell voltages to prevent overvoltage, undervoltage, overcurrent, and short-circuit conditions. The device integrates MOSFET drivers for external P-channel MOSFETs, eliminating the need for external pull-up resistors. Key electrical parameters include a maximum input voltage of 28V, a typical operating current of 30µA, and a shutdown current of 0.8µA. Overvoltage protection thresholds are factory-programmable between 4V and 4.4V with ±0.5% accuracy, while undervoltage thresholds range from 2V to 3.2V with ±2.0% accuracy. The component operates within a temperature range of -40°C to +85°C and is housed in a 16-pin QSOP package.

Feature Summary

• Provides comprehensive protection against overvoltage, undervoltage, overcurrent, and short-circuit faults for three-cell lithium-based battery packs.
• Features integrated MOSFET drivers that simplify circuit design by removing the requirement for external pull-up resistors.
• Supports automatic trickle charging recovery for discharged cells to restore battery functionality after fault clearance.
• Includes logic-level control inputs allowing microcontroller intervention for system management and shutdown operations.

Applications

• Protection circuits for portable electronic devices utilizing three-series lithium-ion battery packs
• Battery management systems in consumer electronics requiring precise cell voltage monitoring
• Industrial equipment powered by multi-cell lithium polymer battery arrays

Procurement Notes

Verify the specific suffix 'EEE' confirms the 16-pin QSOP package and industrial temperature rating (-40°C to +85°C). Confirm the 'V' designation corresponds to the three-cell configuration rather than four-cell variants. Check manufacturer documentation for RoHS compliance status and any recent product change notices affecting availability or specifications.

Selection Notes

Select this component when designing protection for three-series lithium battery architectures requiring low quiescent current. Ensure the external P-channel MOSFETs selected can handle the expected load currents and voltage ratings. Verify that the application environment stays within the specified operating temperature range. Consider the factory-programmable threshold options if custom protection levels are required.

Part Context

The MAX1924 series serves as a dedicated protection controller for lithium-ion and lithium-polymer batteries. It complements other Maxim Integrated power management solutions by providing critical safety functions without integrating the main power switches. This approach allows designers to optimize cost and thermal performance by selecting external MOSFETs tailored to specific current requirements.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Analog Devices official resources for current lifecycle status and potential obsolescence alternatives.