Datasheet

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TYPICAL CHARACTERISTICS
0
100
0
50
150
50
300
200
350
250
400
450
100 150
I
O(OUT)
= 1000 mA
AC DROPOUT VOLTAGE
vs
JUNCTION TEMPERATURE
T
J
− Junction Temperature − _C
Dropout Voltage − mV
I
O(OUT)
= 750 mA
I
O(OUT)
= 500 mA
I
O(OUT)
= 250 mA
Regulation
Voltage
Regulation
Current
Minimum
Charge
Voltage
Pre-Conditioning
and Taper Detect
t
(PRECHG)
t
(CHG)
Charge
Voltage
Charge
Current
Charge
Complete
Pre-Conditioning
Phase
Current Regulation
Phase
Voltage Regulation
and Charge Termination Phase
bq24020 , , bq24022 , , bq24023
bq24024 , bq24025 , bq24026
bq24027
SLUS549E – DECEMBER 2002 – REVISED NOVEMBER 2007
Figure 1.
The bqTINY-II supports a precision Li-Ion, Li-pol charging system suitable for single-cell packs. Figure 3 shows a
typical charge profile, application circuit and Figure 4 shows an operational flow chart.
Figure 2. Typical Charging Profile
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Product Folder Link(s): bq24020 bq24022 bq24023 bq24024 bq24025 bq24026 bq24027