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L6924D データシート(PDF) 21 Page - STMicroelectronics

部品番号 L6924D
部品情報  Battery charger system with integrated power switch for Li-ION/Li-POLYMER
PDF  38 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6924D データシート(HTML) 21 Page - STMicroelectronics

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L6924D
Applications information: charging process
21/38
7.6
Recharge flow chart
Figure 15. Recharge flow chart
7.7
Recharge threshold
When, from an End-of-Charge condition, the battery voltage goes lower than the recharging
threshold (VRCH), the device goes back in charging state. The value of the recharge threshold
is VOPRG–150mV.
END of CHARGE
VBAT
>
VRCH
Detect Low
VBAT
>
VPRETH
FAST CHARGE
Detect High
VBAT
>
VRCH
BATTERY
ABSENT
PRE CHARGE
FAULT
IND FAULT
VBAT
>
VRCH
Detect High Fault
VBAT
<
VABS
Detect Low Fault
VBAT
>
VPRETH
BATTERY
ABSENT
YES
NO
NO
NO
YES
YES
NO
YES
NO
NO
YES
YES
DETECT LOW = a ISINK is sunk for a TDET from the battery
DETECT HIGH = a IINJ is injected for a TDET in the battery
DETECT LOW FAULT = a ISINK is sunk for a TDET from the battery
DETECT HIGH FAULT = a IINJ is injected for a TDET in the battery
VABS = VOPRG – 50mV
VRCH = VOPRG – 150mV
TDET = 100ms (Typ.)
ISINK = IINJ = 1mA (Typ.)
RETURN TO CHARGING PROCESS
FLOW CHART
GO TO BATTERY ABSENT
FLOW CHART
FROM CHARGING PROCESS FLOW CHART



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