MAX4919BETD+

Overview

The MAX4919BETD+ is a battery protection controller featuring an integrated 1.8A pFET switch, designed for single-cell lithium-ion or lithium-polymer battery applications. It provides comprehensive overvoltage and undervoltage protection with precise monitoring thresholds. The device operates within a supply voltage range of 2.7V to 5.5V and supports surface-mount installation in a compact 14-WFDFN package with an exposed pad. Operating temperatures span from -40°C to +85°C, ensuring reliability in portable electronic devices.

Feature Summary

• Integrates a 1.8A pFET switch for efficient power path management
• Provides hardware-based overvoltage and undervoltage protection for single-cell batteries
• Features low quiescent current consumption to extend battery life
• Includes automatic recharge control and fault status indication

Applications

• Single-cell lithium-ion battery protection in mobile phones
• Power management for portable medical devices
• Battery backup systems for consumer electronics
• Protection circuits in IoT sensors and wearables

Procurement Notes

Verify the exact suffix 'ETD+' against the manufacturer's official datasheet to confirm the 14-WFDFN package and temperature grade. Confirm RoHS compliance status as per the latest Analog Devices documentation. Check for obsolescence notices or lifecycle changes directly from the manufacturer before procurement planning.

Selection Notes

Select this component when a compact, integrated solution for single-cell battery protection is required. It is suitable for designs needing built-in pFET switching to save board space. Ensure the application voltage and current requirements align with the 2.7V-5.5V input range and 1.8A switch capability. Consider thermal performance due to the exposed pad design.

Part Context

This part belongs to the Maxim Integrated battery protection family, focusing on single-cell management. It integrates control logic and power switching to simplify circuit design compared to discrete solutions. The MAX4919 series is commonly used in portable electronics where size and efficiency are critical constraints.

Replacement Considerations

Consult Analog Devices official substitution guides for verified alternatives. Cross-reference pinouts and electrical specifications carefully if considering generic equivalents.