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ST1S09IPU Datasheet(PDF) 9 Page - STMicroelectronics

Part # ST1S09IPU
Description  2A, 1.5 MHz PWM step-down switching regulator with synchronous rectification
PDF  18 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST1S09IPU Datasheet(HTML) 9 Page - STMicroelectronics

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ST1S09
Typical performance characteristics
9/18
Figure 9.
Line regulation vs temperature
Figure 10.
Load regulation vs temperature
Figure 11.
PWM Switching frequency vs
temperature
Figure 12.
Maximum duty cycle vs
temperature
Figure 13.
Under voltage lock out threshold
vs temperature
Figure 14.
Efficiency vs output current
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
-75
-50 -25
0
25
50
75
100 125 150 175
T [°C]
V
O@1.2V
V
I = from 2.7V to 5.5V, IO = 100mA
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
-75
-50 -25
0
25
50
75
100 125 150 175
T [°C]
V
O@1.2V
V
I = from 2.7V to 5.5V, IO = 100mA
-0.5
-0.3
-0.1
0.1
0.3
0.5
0.7
0.9
1.1
-75
-50
-25
0
25
50
75
100 125 150 175
T [°C]
V
O@1.2V
V
I = 5V, IO from10mA to 2A
-0.5
-0.3
-0.1
0.1
0.3
0.5
0.7
0.9
1.1
-75
-50
-25
0
25
50
75
100 125 150 175
T [°C]
V
O@1.2V
V
I = 5V, IO from10mA to 2A
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
-75
-50
-25
0
25
50
75
100
125 150 175
T [°C]
V
I=5V, VFB=0.6V
V
O@1.2V
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
-75
-50
-25
0
25
50
75
100
125 150 175
T [°C]
V
I=5V, VFB=0.6V
V
O@1.2V
V
O@3.3V
70
72
74
76
78
80
82
84
86
88
90
-75
-50
-25
0
25
50
75
100
125
150
175
T [°C]
V
I=5V, VFB=0.6V
V
O@3.3V
70
72
74
76
78
80
82
84
86
88
90
-75
-50
-25
0
25
50
75
100
125
150
175
T [°C]
V
I=5V, VFB=0.6V
V
O@1.2V
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
-75
-50
-25
0
25
50
75
100
125
150
175
T [°C]
I
O=10mA
V
O@1.2V
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
-75
-50
-25
0
25
50
75
100
125
150
175
T [°C]
I
O=10mA
25
35
45
55
65
75
85
95
0
500
1000
1500
2000
Iout [mA]
V
IN=5V
V
O=1.2V
V
O=3.3V



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