Texas Instruments BQ25157, Manual

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8.7 Typical Characteristics
C
IN
= 1 µF, C
PMID
= 10 µF, C
LSLDO
= 2.2 µF, C
BAT
= 1 µF (unless otherwise specified)
V
BATREG
(V)
E
rr
o
r (%
)
3.6 3.7 3.8 3.9 4 4.1 4.2 4.3 4.4 4.5 4.6
-0.5
-0.45
-0.4
-0.35
-0.3
-0.25
-0.2
-0.15
-0.1
-0.05
0
D011
T
J
= 25C
T
J
= 0C
T
J
= -40C
T
J
= 60C
T
J
= 125C
VIN = 5 V PMID = Pass-Through
Figure 8-1. Battery Regulation Voltage Accuracy vs. VBATREG
Setting
I
CHARGE
(A)
E
rr
o
r (%
)
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
-1.75
-1.5
-1.25
-1
-0.75
-0.5
-0.25
0
0.25
0.5
0.75
1
1.25
D014
T
J
= -40C
T
J
= 0C
T
J
= 25C
T
J
= 60C
T
J
= 125C
VIN = 5 V VBAT = 3.6 V ICHARGE_RANGE = 1
Figure 8-2. Charge Current Accuracy vs. ICHARGE Setting
I
PRECHARGE
(mA)
E
rr
o
r (%
)
0 5 10 15 20 25 30 35 40
-1.5
-1
-0.5
0
0.5
1
1.5
D012
T
J
= 25C
T
J
= 0C
T
J
= -40C
T
J
= 60C
T
J
= 125C
VIN = 5 V VBAT = 2.7 V ICHARGE_RANGE = 0
Figure 8-3. Pre-Charge Current Accuracy vs. IPRECHARGE
setting (ICHARGE_RANGE = 0)
I
PRECHARGE
(A)
E
rr
o
r (%
)
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
-1.2
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
D013
T
J
= 25C
T
J
= 0C
T
J
= -40C
T
J
= 60C
T
J
= 125C
VBUS = 5 V VBAT = 2.7 V ICHARGE_RANGE = 1
Figure 8-4. Pre-Charge Current Accuracy vs. IPRECHARGE
Setting (ICHARGE_RANGE = 1)
V
INLS
(V)
R
D
S
ON
(
:
)
1 1.5 2 2.5 3 3.5 4 4.5 5
0
0.2
0.4
0.6
0.8
1
1.2
D015
T
J
= -40C
T
J
= 25C
T
J
= 85C
VBUS = 5 V
Figure 8-5. LS/LDO Switch On Resistance vs. VINLS
I
LOAD
(A)
V
L
D
O
(V)
0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.2
0.7984
0.7992
0.8
0.8008
0.8016
0.8024
0.8032
0.804
0.8048
0.8056
0.8064
D009
T
J
= -40C
T
J
= 25C
T
J
= 85C
VIN = 0 V VBAT = 3.6 V VINLS = VPMID
Figure 8-6. LDO Load Regulation (VLDO = 0.8 V)
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BQ25157
SLUSEC5 – DECEMBER 2020
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