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| BQ25120A Datasheet, PDF (52/67 Pages) Texas Instruments – Low IQ Highly Integrated Battery Charge Management Solution for Wearables and IoT | |||
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bq25120A
SLUSD08 â MAY 2017
Typical Application (continued)
10.2.3.2 SYS Output Curves
100%
90%
80%
70%
60%
50%
40%
1E-6
1E-5
TA = 25°C
0.0001 0.001 0.01
Load Current (A)
VSYS = 1.2 V
2.7 V BAT
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
0.10.2 0.5
D001
Figure 46. 1.2 VSYS System Efficiency
100%
90%
80%
70%
60%
50%
40%
1E-6
1E-5
TA = 25°C
0.0001 0.001 0.01
Load Current (A)
VSYS = 1.8 V
2.7 V BAT
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
0.10.2 0.5
D007
Figure 48. 1.8 VSYS System Efficiency
100%
90%
80%
70%
60%
50%
40%
1E-6
1E-5
TA = 25°C
0.0001 0.001 0.01
Load Current (A)
VSYS = 3.3 V
3.6 V BAT
3.8 V BAT
4.2 V BAT
0.10.2 0.5
D013
Figure 50. 3.3 VSYS System Efficiency
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100%
90%
80%
70%
60%
50%
40%
1E-6
1E-5
TA = 25°C
0.0001 0.001 0.01
Load Current (A)
VSYS = 1.5 V
2.7 V BAT
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
0.10.2 0.5
D004
Figure 47. 1.5 VSYS System Efficiency
100%
90%
80%
70%
60%
50%
40%
1E-6
1E-5
TA = 25°C
0.0001 0.001 0.01
Load Current (A)
VSYS = 2.5 V
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
0.10.2 0.5
D010
Figure 49. 2.5 VSYS System Efficiency
1.238
1.228
1.218
1.208
1.198
1.188
1.178
1.168
1.158
1E-6
2.7 V
3V
3.6 V
3.8 V
4.2 V
1E-5
TA = 25°C
0.0001 0.001 0.01
Load Current (A)
VSYS = 1.2 V
0.1 0.5
D003
Figure 51. 1.2 VSYS Load Regulation
52
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Copyright © 2017, Texas Instruments Incorporated
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