MP2681GS-P

Overview

The MP2681GS-P is a Monolithic Power Systems battery management IC designed for lithium-ion and lithium-polymer batteries. It operates within a supply voltage range of 4.5 V to 30 V, delivering an output current of 15 mA at 5 V. The device supports multiple cell configurations including 3S1P, 3S2P, 4S1P, 4S2P, 5S1P, and 5S2P via automatic detection or VID configuration. It functions in a 16-pin SOIC package with an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates CC/CV control with full protection features for comprehensive battery safety.
• Features automatic battery cell detection to adjust charging parameters based on configuration.
• Includes pre-charge mode for deeply discharged batteries and internal timer backup.
• Provides battery temperature monitoring via NTC control and power line fault detection.

Applications

• AC adapter input chargers
• Desktop dock-style chargers
• Electric tool battery packs

Procurement Notes

Verify the specific suffix against official MPS documentation to confirm packaging type and environmental compliance status. Confirm that the component matches the required pinout and thermal characteristics for the target PCB layout. Ensure compatibility with the intended battery chemistry and cell count configuration before integration into the design.

Selection Notes

Select this controller for applications requiring integrated protection and multi-cell support without external microcontrollers. It is suitable for designs needing automatic cell detection and configurable charging voltages. Consider the 16-pin SOIC package constraints and the wide input voltage range when designing the power stage.

Part Context

This component belongs to the MP2681 series of highly integrated switching battery charge controllers. The series is engineered to provide single-chip solutions for complex battery management tasks. It combines precise reference voltages with state indication capabilities for efficient power management systems.

Replacement Considerations

MP2681GS-Z is listed as a direct substitute by the manufacturer. Verify if the suffix change affects packaging or RoHS compliance status according to official datasheets.

FAQ

How does the MP2681GS-P detect battery cells?

It uses a battery ID resistor to automatically detect the cell configuration (e.g., 3S1P, 4S2P) and adjusts the charging voltage accordingly.

What happens if no ID resistor is present?

The charging cutoff voltage can be configured using six preset VID values via the ID pin for different battery configurations.