MP2759A 3A Switching Charger QFN-19

MP2759A 3A Switching Charger QFN-19

The MP2759A is a highly integrated switching charger designed for applications with 1-cell to 6-cell series Li-ion or Li-polymer battery packs.

Key Specifications

Features

• Up to 36V Operation Input Voltage
• 45V Maximum Sustainable Voltage when Not Switching
• Up to 3A Charge Current
• 1-Cell to 6-Cell in Series with 3.6V, 4V, 4.1V, 4.15V, 4.2V, 4.35V, or 4.4V Battery Regulation Voltage for Each Cell
• Input Current Limit Regulation
• Input Minimum Voltage Limit Regulation
• Support OR Selection Power Path Management
• 0.5% Battery Regulation Voltage Accuracy
• Integrated Reverse Blocking MOSFET
• Internal Loop Compensation

Typical Application Circuit

Applications

• Industrial Medical Equipment
• Power Tools
• Robot 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