MP2672A 4-5.75V Boost Charger QFN-18

MP2672A 4-5.75V Boost Charger QFN-18

The MP2672A is a highly integrated, flexible switch-mode battery charger IC for Lithium-ion batteries with two cells in series.

Key Specifications

Features

• 4.0V to 5.75V Operating Input Voltage
• Up to 14V Sustainable Voltage
• Up to 2A Configurable Charge Current for Battery with 2 Cells in Series
• Compatible with Host-Control or Standalone Mode
• NVDC Power Path Management
• Configurable Input Voltage Limit
• Configurable Charge Voltage with 0.5% Accuracy
• No External Sense Resistor Required
• Integrated Cell-Balancing Circuit for Mismatched Cells
• Preconditioning for Fully Depleted Battery

Typical Application Circuit

Applications

• Portable Handheld Solutions
• Point-of-Sale (POS) Machines
• Bluetooth Speakers
• E-Cigarettes

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