BQ24190_15 Datasheet, PDF (10/52 Pages) Texas Instruments – bq2419x I2C Controlled 4.5-A Single Cell USB/Adapter Charger with Narrow VDC Power Path Management and USB OTG

bq24190, bq24192, bq24192I
SLUSAW5B – JANUARY 2012 – REVISED DECEMBER 2014
95
90
85
80
75
70
0
VBUS = 5 V
VBUS = 9 V
100
200
300
400
500
600
Load Current (mA)
C012
Figure 1. System Light Load Efficiency vs System Load
Current
95
VBUS = 5 V
VBUS = 7 V
93
VBUS = 9 V
VBUS = 12 V
91
89
87
85
0
1
2
3
4
5
Load Current (A)
C011
Figure 3. Charging Efficiency vs Charging Current
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
0
VBAT = 3.2 V
VBAT = 3.8 V
VBAT = 4.2 V
200 400 600 800 1000
VBUS Load Current (A)
1200
1400
C005
Figure 5. Boost Mode VBUS Voltage Regulation vs VBUS
Load Current
3.70
3.68
3.66
3.64
3.62
3.60
0
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VBUS = 5 V
VBUS = 17 V
1
2
3
4
5
System Load Current (A)
C014
Figure 2. SYS Voltage Regulation vs System Load
100
VBAT = 3.2 V
VBAT = 3.8 V
95
90
85
80
0
500
1000
VBUS Load Current (A)
1500
C013
Figure 4. Boost Mode Efficiency vs VBUS Load Current
3.80
SYSMIN 3.5 V
3.75
3.70
3.65
3.60
3.55
3.50
±50
0
50
100
150
Temperature (ƒC)
C001
Figure 6. SYS Voltage vs Temperature
10
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