MP2681BGS-Z

Overview

The MP2681BGS-Z is a highly integrated lithium-ion or lithium-polymer switch-mode battery charging controller manufactured by Monolithic Power Systems. It operates within a supply voltage range of 5 V to 30 V and delivers an output current of 200 mA with a regulated output voltage of 4.158 V. The device supports multiple battery configurations including 3S1P, 3S2P, 4S1P, 4S2P, 5S1P, and 5S2P through automatic cell detection via battery ID resistors. It features a quiescent current of 490 uA and dissipates up to 1.6 W of power. The component functions across a temperature range of -40°C to +125°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrates constant-current and constant-voltage control with full protection and status indication for single-chip solutions.
• Features automatic battery cell detection that adjusts charging parameters based on detected series-parallel configurations.
• Includes comprehensive safety mechanisms such as battery temperature monitoring, NTC control, and internal charging timers.

Applications

• AC adapter input charging systems
• Desktop charger applications
• Power tool battery management

Procurement Notes

Verify the specific suffix Z against official datasheets to confirm RoHS compliance and lead-free status. Confirm the 16-SOIC package dimensions match your PCB footprint requirements. Ensure the input voltage source remains within the 5 V to 30 V operational range to prevent damage. Validate that the thermal design accommodates the specified power dissipation limits under maximum load conditions.

Selection Notes

Select this component when designing chargers requiring automatic multi-cell configuration detection without external microcontrollers. It is suitable for applications needing wide input voltage compatibility from standard AC adapters. Consider the 16-pin SOIC package if surface mount space allows. Verify that the required charging current does not exceed the 200 mA specification for optimal performance.

Part Context

This part belongs to the MP2681 family of battery charge management ICs designed for high integration. It serves as a complete solution for managing lithium-based batteries in portable electronics and power tools. The device simplifies design by combining charging logic, protection circuits, and status indicators into a single package, reducing bill of materials complexity.

Replacement Considerations

MP2681GS-P is listed as a direct substitute within the same product line.