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12
CHARGE CONTROL IC9002 outputs status signals shown in Table.2-4 while charging to MAIN SYSTEM CONTROLLER IC1003.
Table.2-4 Status signal
IC9002 Pin-2 [XSTAT1]
IC9002 Pin-3 [XSTAT2]
Status
L
L
When pre-charging
L
Open
When normal-charging
Open
L
When the charging operation terminates
Open
Open
Error Status
Battery is not connected
Detecting the abnormal temperature
Detecting the timer fault
Etc.
Table.2-5 Monitoring the charging operation by MAIN SYSTEM CONTROLLER IC1003
IC1003 Pin-148 [PQ2]
IC1003 Pin-149 [PQ3]
Status
L
L
When pre-charging
L
H
When normal-charging
H
L
When the charging operation terminates
H
H
Error Status
Battery is not connected
Detecting the abnormal temperature
Detecting the timer fault
Etc.
Table.2-6 Charging Current
Power Source
Pre-charging
(Until BATT voltage becomes 3[V])
(Until BATT voltage becomes 3[V])
Constant-Current Charging
Remark
AC Power Adapter
Approx. 50mA
Approx. 400mA
-
USB (500mA – Permit)
Approx. 50mA
Approx. 220mA
Varies depending on conditions. The left
values are when connecting with PC
without transferring data
values are when connecting with PC
without transferring data
USB (100mA – Permit)
Approx. 50mA
Approx. 90mA
Varies depending on conditions. The left
values are while LowBATT and no PC
connecting screen appearing
values are while LowBATT and no PC
connecting screen appearing
Note:
The actual charging current of USB charge varies depending on the system conditions. It will be as follows.
[Each VBUS limit current] – [Current consumed by the system] = [Actual charging current]
[Each VBUS limit current] – [Current consumed by the system] = [Actual charging current]
When both AC adaptor and USB cable are inserted into the unit, charging current of the constant-current charging will be approx. 200mA, about half in the
case of AC adaptor alone.
case of AC adaptor alone.
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