MP2626 6V USB-Compliant Single Cell Li-ion Switching Charger QFN-24

MP2626 6V USB-Compliant Single Cell Li-ion Switching Charger QFN-24

The MP2626 is a highly-integrated, flexible, switch-mode battery charger with system power management, designed for single-cell Li-ion and Li-Polymer batteries used in a wide range of portable applications.

Key Specifications

Features

• 20V Absolute Maximum Input Voltage
• 6V Maximum Input Operating Voltage
• Selectable 4.2V/ 4.35V Charge Voltage with 0.5% Accuracy at 25ºC
• Power Management Function Integrated Input-Current Limit and Input- Voltage Regulation
• Up to 2A Programmable Charge Current
• Trickle-Charge Function
• Negative Temperature Coefficient Pin for Battery Temperature Monitoring
• Programmable Timer Back-Up Protection
• Thermal Regulation and Thermal Shutdown
• Internal Battery Reverse Leakage Blocking

Typical Application Circuit

Applications

• Sub-Battery Application

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