BQ24195 Datasheet, PDF (11/41 Pages) Texas Instruments – I2C Controlled 2.5A / 4.5A Single Cell USB/Adapter Charger With 5.1V at 1A / 5.1V at 2.1A Synchronous Boost Operation

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CHARGING EFFICIENCY
vs
CHARGING 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 1.
BOOST MODE PMID VOLTAGE REGULATION
vs
PMID LOAD CURRENT
5.25
5.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80
4.75
0
BAT = 3.5 V
BAT = 3.5 V
BAT = 3.2 V
0.5
1
1.5
2
PMID Load Current (A)
C001
Figure 3.
2000
1800
1600
1400
1200
1000
800
600
400
±50
INPUT CURRENT LIMIT
vs
TEMPERATURE
IIN = 500 mA
IIN = 1.5 A
IIN = 2 A
0
50
100
150
Temperature (ƒC)
C003
Figure 5.
bq24195
bq24195L
SLUSB97 – OCTOBER 2012
96
94
92
90
88
86
84
82
0
4.25
BOOST MODE EFFICIENCY
vs
PMID LOAD CURRENT
BAT = 3.8 V
BAT = 3.5 V
BAT = 3.2 V
0.5
1
1.5
2
PMID Load Current (A)
C002
Figure 2.
BAT VOLTAGE
vs
TEMPERATURE
4.21
4.17
4.13
4.09
4.05
±50
VREG = 4.112 V
VREG = 4.208 V
0
50
100
150
Temperture (ƒC)
C002
Figure 4.
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
40
CHARGE CURRENT
vs
TEMPERATURE
TREG 80 C
TREG 120 C
50 60 70 80 90 100 110 120 130
Temperture (ƒC)
C009
Figure 6.
Copyright © 2012, Texas Instruments Incorporated
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