bq24296
bq24297
SLUSBP6A –SEPTEMBER 2013–REVISED OCTOBER 2013
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CHARGE EFFICIENCY
SYSTEM EFFICIENCY
vs
SYSTEM LOAD CURRENT
vs
CHARGE CURRENT
95
95
90
85
80
75
70
90
85
80
75
70
VBUS = 5V
VBUS = 5V
2.5
65
0
0.5
1
1.5
2
2.5
3
3.5
0
0.5
1
1.5
2
3
Charge Current (A)
Load Current (A)
Figure 5.
Figure 4.
BOOST MODE EFFICIENCY
vs
VBUS LOAD CURRENT
SYS VOLTAGE REGULATION
vs
SYSTEM LOAD CURRENT
100
95
90
85
80
75
70
65
60
4
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
SYSMIN = 3.5
SYSMIN = 3.2
SYSMIN = 3.7
VBAT = 3.2V
VBAT = 3.5V
VBAT = 3.8V
0
0.5
1
1.5
0
0.5
1
1.5
2
2.5
3
3.5
VBUS Load Current (A)
System Load Current (A)
Figure 6.
Figure 7.
BOOST MODE VBUS VOLTAGE REGULATION
(Typical Output = 4.998V ; REG06[7:4]=0111)
vs
SYS VOLTAGE
vs
TEMPERATURE
VBUS LOAD CURRENT
5.1
5
3.7
3.65
3.6
4.9
4.8
4.7
4.6
4.5
3.55
3.5
VBAT = 3.2V
VBAT = 3.5V
VBAT = 3.8V
SYSMIN = 3.5V
0
0.5
1
1.5
-50
-25
0
25
50
75
100
125
150
VBUS Load Current (A)
Temperature (oC)
Figure 8.
Figure 9.
14
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