MP2639B 5-16V 1S Cell Li-ion or Li-polymer Switching Charger Compatible QFN-26

MP2639B 5-16V 1S Cell Li-ion or Li-polymer Switching Charger Compatible QFN-26

The MP2639B is a highly integrated, flexible switch-mode battery charging management device for a single-cell Li-ion and Li-Polymer battery used in a wide range of portable applications.

Key Specifications

Features

• 4.5V to 16V Input Voltage Range
• Integrated Both Input-Current-Based and Input-Voltage-Based Power Management Functions
• Up to 5A Programmable Charge Current
• 4.35V Charge Voltage with 0.5% Accuracy
• Up to 3A Programmable Boost Output Current
• Up to 16V Programmable Boost Output Voltage
• Negative Temperature Coefficient Pin for Temperature Monitoring
• Programmable Timer Back-Up Protection
• Discharge Mode Load Trace Compensation
• Thermal Regulation and Thermal Shutdown

Typical Application Circuit

Applications

• Power Station Applications
• USB PD Power Banks

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