ISL9209B is an integrated circuit (IC), which is optimized to provide a redundant safety protection charging system failure to lithium ion batteries. Integrated circuit monitor input voltage, battery voltage and charging current. Any of the three parameters exceeds its limits. IC shuts down a internal P channel MOSFET for eliminating the charging system. In addition to the above protection external parameters, the integrated circuit also monitors its internal temperature and turn off the P -channel MOSFET exceeding+ 140 ° C. Together with the battery charger IC and the protection module in the battery pack, the charging system of ISL9209B has three levels of protection and two faults. The design purpose of the integrated circuit is to slowly turn on the internal PFET to avoid wave current, but it will turn off the PFET. When the input is input, quickly remove the power before any damage occurs. ISL9209B has a logical warning output and allowing the system to disconten the input power supply.

Features

Third Protection full integrated protection circuit variable

High -precision protection threshold

User's programmable over -current protection threshold

Input Overvoltage protection is less than 1 μs

High -resistant error trigger capability in transient

Display warning output of fault

Enable input

Easy to use

Thermal enhancement TDFN component

Provide lead -free plus annealing (in line with ROHS)

Application

] Palm computer and smartphone

Portable instrument

desktop charger

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