The MP2619 is a monolithic switch charger in a 28-pin 4mm x 5mm QFN package. Suitable for 2-3 cell lithium ion battery pack with built-in internal power MOSFET. It achieves up to 2A charging current with current mode control for fast loop response and easy compensation. The charging current can be programmed with a precise inductive resistance induction current.
The MP2619 adjusts battery voltage and charging current through two control loops to achieve high precision CC charging and CV charging. The system power path management function automatically selects input or battery power for the system to ensure continuous power supply. Power path management separates charging current from system load.
When the MP2619 realizes the co-current of the input current, the charging current will decrease as the system current increases. Fault state protection includes cycle limiting and hot shutdown. Other safety features include battery temperature monitoring, charging status indication and a programmable timer to complete the charging cycle.