Texas Instruments BQ25123, Manual

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10.2.3.2 SYS Output Curves
Load Current (A)
E
ffi
ci
e
n
c
y (
%
)
1E-6 1E-5 0.0001 0.001 0.01 0.10.2 0.5
40%
50%
60%
70%
80%
90%
100%
D001
2.7 V BAT
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
T
A
= 25°C V
SYS
= 1.2 V
Figure 10-10. 1.2 V
SYS
System Efficiency
Load Current (A)
E
ffi
ci
e
n
c
y (
%
)
1E-6 1E-5 0.0001 0.001 0.01 0.10.2 0.5
40%
50%
60%
70%
80%
90%
100%
D004
2.7 V BAT
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
T
A
= 25°C V
SYS
= 1.5 V
Figure 10-11. 1.5 V
SYS
System Efficiency
Load Current (A)
E
ffi
ci
e
n
c
y (
%
)
1E-6 1E-5 0.0001 0.001 0.01 0.10.2 0.5
40%
50%
60%
70%
80%
90%
100%
D007
2.7 V BAT
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
T
A
= 25°C V
SYS
= 1.8 V
Figure 10-12. 1.8 V
SYS
System Efficiency
Load Current (A)
E
ffi
ci
e
n
c
y (
%
)
1E-6 1E-5 0.0001 0.001 0.01 0.10.2 0.5
40%
50%
60%
70%
80%
90%
100%
D010
3.0 V BAT
3.6 V BAT
3.8 V BAT
4.2 V BAT
T
A
= 25°C V
SYS
= 2.5 V
Figure 10-13. 2.5 V
SYS
System Efficiency
Load Current (A)
E
ffi
ci
e
n
c
y (
%
)
1E-6 1E-5 0.0001 0.001 0.01 0.10.2 0.5
40%
50%
60%
70%
80%
90%
100%
D013
3.6 V BAT
3.8 V BAT
4.2 V BAT
T
A
= 25°C V
SYS
= 3.3 V
Figure 10-14. 3.3 V
SYS
System Efficiency
Load Current (A)
SY
S Ou
tput V
olta
ge
(V)
1E-6 1E-5 0.0001 0.001 0.01 0.1 0.5
1.158
1.168
1.178
1.188
1.198
1.208
1.218
1.228
1.238
D003
2.7 V
3 V
3.6 V
3.8 V
4.2 V
T
A
= 25°C V
SYS
= 1.2 V
Figure 10-15. 1.2 V
SYS
Load Regulation
BQ25123
SLUSCZ6A – JANUARY 2018 – REVISED MAY 2021
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