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SLUS694B – MARCH 2006 – REVISED AUGUST 2006
FUNCTIONAL DESCRIPTIONS
CHARGE CONTROL
The bq24070/1 supports a precision Li-ion or Li-polymer charging system suitable for single-cell portable
devices. See a typical charge profile, application circuit, and an operational flow chart in
through
respectively.
Pre-Conditioning
Phase
Regulation
Voltage
Regulation
Current
Current Regulation Phase
Voltage Regulation and Charge Termination Phase
Minimum
Charge
Voltage
Charge
Voltage
Charge
Complete
Pre−
Conditioning
and Term
Detect
Charge
Current
UDG−04087
Figure 1. Charge Profile
9