Part : BQ34Z100
Schematic : Similar Figure 7 @ datasheet
Problem : BQ34Z100 Self Heating & REG25(Regulator output) voltage = 3.3V
Item Count : Total=16EA , Self Heating=6EA => 6/16=37%
C1, C2, C8 is shortest path to BQ34Z100.
same problem at below link.
http://e2e.ti.com/support/power_management/battery_management/f/180/t/329819.aspx?pi300607=2
normally it operate good...(No Heating & REG25=2.5v)
but after long time aging.... REG25 output voltage=3.3V & heating.. and not recover..
remove battery and reconnecting... it is only way to recover.
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is there overvoltage protection at internal regulator output???
(I guess internal overvoltage protection part make heating)
internal regulator only operate for external Thermister(RT1) and VEN??
(can i use BQ34Z100 without internal Regulator(Broken Pin number 6, 7) and external LDO 2.5v))
adding resistor between BAT+ to REGIN. it can solve problem??
i want to know internal block Diagram of BQ34Z100.....