ST1S09(2007) 데이터 시트보기 (PDF) - STMicroelectronics
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ST1S09
(Rev.:2007)
(Rev.:2007)
STMicroelectronics
ST1S09 Datasheet PDF : 18 Pages
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Typical performance characteristics
ST1S09
Figure 15. Efficiency vs temperature
Figure 16. Over voltage protection vs
temperature
100
95
VO=3.3V
90
85
80
75
VO=1.2V
70
65
60
55
VI=5V, IO=100mA
50
45
40
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
1.4
Resistor 1.2k from VI and VSW
1.3
VSW=1.2V
1.2
VI=5V, VO=3.3V, CFB=100nF
1.1
OVP ON
1
0.9
0.8
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
Figure 17. Over voltage protection vs
temperature
Figure 18. Over voltage protection hyst. vs
temperature
1.4
Resistor 1.2k from VI and VSW
1.3
VSW=0.8V
1.2
VI=5V, VO=3.3V, CFB=100nF
1.1
OVP ON
1
0.9
0.8
-75 -50 -25 0
25 50 75 100 125 150 175
T [°C]
14
12
Resistor 1.2k from VI and VSW
10
VSW=0.8V
VI=5V, VO=3.3V, CFB=100nF
8
6
4
OVP ON
2
0
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
Figure 19. Load transient
Figure 20. Inhibit transient
VO
VINH
VO
IO
IO
VI=5V, VO=1.2V, IO=100mA to1A, L=3.3µH, CI=4.7µF,
CO=22µF
10/18
VI=5V, VINH=0 to 2V, IO=2A, L=3.3µH, CI=4.7µF, CO=22µF,
VO=3.3V
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