STEVAL-ISA045V2 STMicroelectronics, STEVAL-ISA045V2 Datasheet - Page 9

• Manufacturer Part Number: STEVAL-ISA045V2
• Description: BOARD EVAL BASED ON ST1S09
• Manufacturer: STMicroelectronics
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of STEVAL-ISA045V2

• Design Resources: STEVAL-ISA045V2 Gerber Files STEVAL-ISA045V2 Schematic STEVAL-ISA045V2 Bill of Material
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.3V
• Current - Output: 2A
• Voltage - Input: 2.7 ~ 5.5 V
• Regulator Topology: Buck
• Frequency - Switching: 1.5MHz
• Board Type: Fully Populated
• Utilized Ic / Part: ST1S09
• Input Voltage: 2.7 V to 5.5 V
• Output Voltage: 3.3 V
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: ST1S09
• Other names: 497-6371

ST1S09
Figure 9.
Figure 11. PWM Switching frequency vs.
Figure 13. Under voltage lock out threshold
1.9
1.9
1.8
1.8
1.7
1.7
1.6
1.6
1.5
1.5
1.4
1.4
1.3
1.3
1.2
1.2
1.1
1.1
-0.2
-0.2
-0.4
-0.4
-0.6
-0.6
-0.8
-0.8
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
2
2
1
1
3.9
3.9
3.8
3.8
3.7
3.7
3.6
3.6
3.5
3.5
3.4
3.4
3.3
3.3
3.2
3.2
3.1
3.1
-1
-1
1
1
0
0
-75
-75
4
4
3
3
-75 -50 -25
-75 -50 -25
-75
-75
V
V
-50
-50
V
V
O
O
-50
-50
@1.2V
@1.2V
O
O
V
V
@1.2V
@1.2V
O
O
Line regulation vs. temperature
temperature
vs. temperature
@1.2V
@1.2V
-25
-25
-25
-25
0
0
0
0
0
0
25
25
25
25
V
V
25
25
I
I
= from 2.7V to 5.5V, I
= from 2.7V to 5.5V, I
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
50
50
50
50
50
50
75 100 125 150 175
75 100 125 150 175
75
75
75
75
100 125 150 175
100 125 150 175
100 125 150 175
100 125 150 175
V
V
I
I
=5V, V
=5V, V
I
I
O
O
=10mA
=10mA
O
O
= 100mA
= 100mA
FB
FB
Doc ID 13632 Rev 4
=0.6V
=0.6V
Figure 10. Load regulation vs. temperature
Figure 12. Maximum duty cycle vs.
Figure 14. Efficiency vs. output current
90
90
88
88
86
86
84
84
82
82
80
80
78
78
76
76
74
74
72
72
70
70
-0.1
-0.1
-0.3
-0.3
-0.5
-0.5
95
85
75
65
55
45
35
25
1.1
1.1
0.9
0.9
0.7
0.7
0.5
0.5
0.3
0.3
0.1
0.1
-75
-75
-75 -50 -25
-75 -50 -25
0
V
V
O
O
@3.3V
@3.3V
-50
-50
V
V
O
O
@1.2V
@1.2V
temperature
Typical performance characteristics
-25
-25
V
O
=1.2V
500
0
0
0
0
25
25
25
25
Iout [mA]
T [°C]
T [°C]
T [°C]
T [°C]
1000
50
50
V
50
50
IN
=5V
V
V
I
I
= 5V, I
= 5V, I
75
75
75 100 125 150 175
75 100 125 150 175
100
100
O
O
V
V
from10mA to 2A
from10mA to 2A
I
I
=5V, V
=5V, V
1500
125
125
FB
FB
=0.6V
=0.6V
150
150
V
O
=3.3V
2000
9/18
175
175