MP2659 3A Standalone Switching Charger QFN-19

MP2659 3A Standalone Switching Charger QFN-19

The MP2659 is a highly integrated switching charger designed for portable devices with 3-cell to 6-cell series Li-ion or Li-polymer battery packs.

Key Specifications

Features

• Up to 36V Operating Input Voltage
• 45V Max Sustainable Voltage when Not Switching
• Up to 3A Charge Current
• 3-Cell to 6-Cell Series with 3.6V/4.2V/4.35V /4.15V Battery Regulation Voltage for Each Cell
• 0.5% Battery Regulation Voltage Accuracy
• Integrated Input Current Sensing and Reverse Blocking FET
• Internal Loop Compensation
• Input Current Limit Regulation
• Minimum Input Voltage Regulation
• Charge Operation Indicator

Typical Application Circuit

Applications

• Industrial Medical Equipment
• Power Tools
• Robots and Portable Vacuum Cleaners

Design Notes

• Charge current accuracy depends on the sense resistor tolerance, so use a 1% or better part and keep its traces Kelvin-connected.
• Wire the NTC input for JEITA profile control if the pack is charged over temperature.
• Set the input current limit to what the adapter can actually deliver; a limit above the adapter rating causes the input rail to collapse mid-charge.
• Termination current and recharge threshold dominate cycle life in shallow-cycling products.

Common Questions