MP2681GS-Z

Overview

The MP2681GS-Z is a highly integrated lithium-ion or lithium-polymer switch battery charging controller featuring comprehensive protection and status indication. It operates with an input voltage range of 4.5V to 30V and supports a maximum output current of 15mA. The device utilizes a 16-pin SOIC package and functions within a temperature range of -40°C to +125°C. It includes programmable timers, automatic cell detection for configurations up to 5S2P, and three-stage charging: pre-charge, constant current, and constant voltage.

Feature Summary

• Integrates precise reference voltage and charging status indicators for AC adapter and dock applications
• Features automatic battery cell detection via ID resistors to adjust charging voltage for various series-parallel configurations
• Provides safety backup through an internal charging timer and monitors battery temperature via NTC control
• Supports fixed pre-charge mode for deeply discharged batteries with fault control mechanisms

Applications

• AC adapter powered battery chargers
• Docking station charger systems
• Electric tool battery packs
• Portable electronic devices requiring single-cell Li-ion management

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance when ordering. Confirm the 16-SOIC package dimensions match your PCB footprint requirements. Ensure the design accommodates the specified operating temperature range of -40°C to +125°C. Cross-reference the datasheet for exact pinout definitions to prevent installation errors during surface mount assembly.

Selection Notes

Select this component for applications requiring a single-chip solution for CC/CV charging with built-in protection. It is suitable for designs needing automatic battery configuration detection without external microcontrollers. Consider the 16-SOIC package size constraints and the 4.5V to 30V input voltage window. Evaluate if the integrated timer and NTC monitoring meet the system's safety certification requirements.

Part Context

This part belongs to the MP2681 series from Monolithic Power Systems, designed specifically for managing lithium-based battery cells in portable electronics. The GS variant denotes the specific package type and thermal characteristics. It serves as a dedicated charge management IC, distinguishing itself from general-purpose power supplies by integrating battery-specific logic and protection features directly into the controller.

Replacement Considerations

MP2681GS-P is listed as a direct substitute by the manufacturer. Verify that the packaging difference does not impact automated placement processes. Ensure all electrical parameters remain identical before swapping components in existing designs.