MP2632B 4.65-6V, 3A Battery Charger QFN-26

MP2632B 4.65-6V, 3A Battery Charger QFN-26

The MP2632B is a highly integrated, flexible, switch-mode battery charger with system power-path management designed for single- cell Li-ion or Li-polymer batteries for use in a wide range of applications.

Key Specifications

Features

• Up to 20V Sustainable Input Voltage
• 4.65V to 6V Operating Input Voltage Range
• Power Management Function, Integrated Input Current Limit, Input Voltage Regulation
• Up to 3A Programmable Charge Current
• Trickle-Charge Function
• Selectable 4.2V / 4.35V / 4.45V Charge Voltage with 0.5% Accuracy
• 4-LED Driver for Battery Fuel Gauge Indication
• Automatic Turn-Off at Light Load
• Input Source Detection
• Output Source Signaling

Typical Application Circuit

Applications

• Sub-Battery Applications
• Power-Bank Applications for Smartphones

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