BQ25570_14 Datasheet, PDF (17/41 Pages) Texas Instruments – Ultra Low Power Harvester Power Management IC with Boost Charger, and Nano-Powered Buck Converter

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100
90
V_IN = 0.2 V
80
70
60
50
40
VSTOR = 3.0 V
30
VSTOR = 2.0 V
VSTOR = 5.5 V
20
0.0
0.1
1.0
10.0
100.0
Input Current (mA)
Figure 13. Charger Efficiency vs Input Current
2000
1500
1000
T^T_A^A =⁼ 2²5^5oCC
T_A^A = 85^oCC
T_AA = -40^oCC
500
0
2
3
4
5
Input Voltage (V)
Figure 15. VSTOR Quiescent Current vs VSTOR Voltage:
Active Mode
100
90
80
70
VOUT = 1.8V, T_A = 25^oC
60
50
VSTOR = 2.1V
VSTOR = 3.6V
40
0.001
0.01
0.1
VSTOR = 5.5V
1
10
100
Output Current (mA)
Figure 17. Buck Efficiency vs Output Current
bq25570
SLUSBH2C – MARCH 2013 – REVISED JANUARY 2014
1600
1400
1200
1000
TTA_A == 8855Co_C
TA_A = 25C^oC
TA_A = -40C^oC
800
600
400
200
0
2
3
4
5
Input Voltage (V)
Figure 14. VSTOR Quiescent Current vs VSTOR Voltage:
Standby Mode
700
TT_A^{A == 8855Co}C
600
T_AA = 25C^oC
500
TT_{A == --4400C}^oC
400
300
200
100
0
2
3
4
5
Input Voltage (V)
Figure 16. VBAT Quiescent Current vs VBAT Voltage: Ship
Mode
100
VOUT = 1.8V
95
90
85
80
IOUT = 0.01mA
IOUT = 0.1mA
75
IOUT = 1mA
IOUT = 10mA
70
IOUT = 100mA
2.0
3.0
4.0
5.0
Input Voltage (V)
Figure 18. Buck Efficiency vs Input Voltage
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