BQ25050 Datasheet, PDF (11/28 Pages) Texas Instruments – 1A, Single-Input, Single Cell Li-Ion Battery Charger with 50-mA LDO, External Power Path

bq25050
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SLUSA33 – MARCH 2010
TYPICAL CHARACTERISTICS (continued)
Using circuit in Figure 1, T_A = 25°C, unless otherwise specified
SUPPLEMENT MODE
CHARGE CYCLE DEMO
IMON
1 V/div
BGATE
1 V/div
VOUT
2 V/div
IOUT
2 A/div
VIN = 5 V, VBAT = 3.2 V,
ICHG = 935 mA, IOUT = 0 A to 2 A
100 µs/div
Figure 15.
VOUT
2 V/div
VBAT
2 V/div
IIN
100 mA/div
BGATE
2 V/div
VIN = 5 V, ICHG = 280 mA,
BGATE =Enabled, CBAT = 2000 µF,
No battery connected,
RDSon from IN to OUT
20 ms/div
Figure 16.
BATTERY VOLTAGE
vs
CHARGE CURRENT
4.24
CV Mode
4.23
4.22
4.21
R_DSON (From IN to OUT)
vs
JUNCTION TEMPERATURE
1.20
1.00
I_load = 500 mA
0.80
4.20
0.60
4.19
0.40
4.18
0.20
4.17
4.16
0
200
400
600
800
I_CHRG - Charge Current - mA
Figure 17.
1000
0.00
-50
0
50
100
150
T_J - Junction Temperature - °C
Figure 18.
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