SM6781BV Charging Circuit

Published:2011/8/3 7:18:00 Author:Michel | Keyword: Charging Circuit | From:SeekIC

The above charging circuit is composed of SM6781BV.SM6781BV is charging control integrated controller and the tube feet functions are as follows. Feet 1-Timing Choosing Port The value ofinput port voltage is set as UDD,UDD/2 or 0. Feet 2(LEDN)-Charging Display LED Driving Output Port It adopts leakage output and the low PWL is output when it is fast charging.When the charging is abnormal and INH port is high PWL,the output pulse is 1HZ.And it is in high impedance condition when the charging is finished. Feet 3(BATT)—Battery voltage Detection Input End This feet inputs every battery voltage and it adopts resistance to divide the voltage when there are many batteries. Feet 7 (INH)—Fast Charging Interruptting Input Port It stops fast charging when it is high PWL.It stops charging and begins to charge when it is low PWL.



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