ST1S12XX(2008) データシートの表示（PDF） - STMicroelectronics
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ST1S12XX
(Rev.:2008)
(Rev.:2008)
STMicroelectronics
ST1S12XX Datasheet PDF : 20 Pages
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ST1S12xx
Typical performance characteristics
7
Typical performance characteristics
Figure 4.
Unless otherwise specified, refer to the typical application circuit under the following
conditions: CIN = 4.7 µF, COUT = 10 µF, L = 2.2 µH
Voltage feedback vs temperature Figure 5. Drop vs temperature
650
VIN=VEN=3.6V, IOUT=10mA, VOUT=1.8V
630
610
590
570
550
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
0.5
IOUT=700mA, VOUT=2.7V, Duty cycle=100%
0.4
0.3
0.2
0.1
0
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
Figure 6. Oscillator frequency vs
temperature
Figure 7. Efficiency vs output current
2.3
VIN=VEN=3.6V, VFB=0.65V, VOUT=1.8V
2.1
1.9
1.7
1.5
1.3
1.1
-75 -50 -25 0
25 50 75 100 125 150 175
T [°C]
100
90
80
70
60
50
40
30
20
10
0
0
VIN=VEN=3V, IOUT=from 10mA to 700mA, VOUT=1.2V
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
IOUT [A]
Figure 8. Efficiency vs output current
Figure 9. Efficiency vs temperature
100
90
80
70
60
50
40
30
20
10
0
0
VIN=VEN=3.6V, IOUT=from 10mA to 700mA, VOUT=1.8V
0.1 0.2 0.3 0.4 0.5 0.6 0.7
IOUT [A]
100
90
80
70
60
50
40
30
20
10
0
IOUT=100mA
IOUT=700mA
VIN=VEN=3.6V, VOUT=1.8V
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
11/20
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