Rev 7, 15-Jul-16

- 12 -

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ACT2802/ACT2802B/ACT2802C

FUNCTIONAL DESCRIPTION

End of Charge

When charge current decreases to 15% of set fast 

charge current, the buck converter goes into end of

charge mode and keep monitoring the battery

voltage. 

Recharge

When battery voltage drops by 200mV below the

end of charge voltage, the charger is reinitiated

with constant current charge.

A: PRECONDITION STATE

B: FAST-CHARGE STATE

C: TOP-OFF STATE

D: END-OF-CHARGE STATE

Figure 3.

Typical Li+ Charge Profile and ACT2802/ACT2802B/ACT2802C Charge States

Figure 4.

Charger State Diagram