Datasheet

T-Temperatures- C
o
Voltage-V
4.36
4.32
140
4.38
4.42
4.4
4.44
4.34
-60 -40 -20 0 20 40 60 80 100 120
V ,V =5.5V
I =100 A
OUT AC
I
+3Sigma
-3Sigma
Mean
Pre-Conditioning
Phase Current Regulation Phase Voltage Regulation and Charge Termination Phase
Regulation
Voltage
Regulation
Current
Minimum
Charge
Voltage
Pre−
Conditioning
and Term
Detect
Charge
Current
Charge
Complete
UDG−04087
Charge
Voltage
bq24070
bq24071
www.ti.com SLUS694F –MARCH 2006–REVISED DECEMBER 2009
FUNCTIONAL DESCRIPTIONS
SIGMA
Figure 1. Typical OUT Voltage Regulation, bq24070
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 Figure 2 through Figure 4,
respectively.
Figure 2. Charge Profile
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Product Folder Link(s): bq24070 bq24071