5-Cell to 10-Cell Li+ Protector with Cell Balancing

The DS2726 provides full charge and discharge protection for 5- to 10-cell lithium-ion (Li+) battery packs. The protection circuit monitors individual cell voltages to detect overvoltage and undervoltage conditions. Protection against discharge overcurrent and short-circuit current is provided with user-selectable thresholds using external resistors. P-channel protection FETs are employed high side and driven from on-chip 10V FET drivers. Cell balancing can be enabled to ensure that all cells are equally charged.

Applications

* Electric Bikes * Home Appliances * Power Tools

* Complete Protection for 5-Cell to 10-Cell Li+ Packs

* Pin Programmable for 5 to 10 Cells

* Internal Cell-Balancing Circuit, Shunts Up to 300mA

* Pin-Programmable VOV Threshold

* Pin-Programmable Cell-Balance Voltage

* Overdischarge Current and Short-Circuit Current Set with External Resistors

* Overdischarge Current and Short-Circuit Current Timeout Delay Set with External Capacitors

* Low Power Consumption: 60µA (typ)

* Low Shutdown Power Consumption: 5µA (typ)

* 7mm x 7mm, 32-Pin TQFN Lead-Free Package