STEVAL-ISA055V1 STMicroelectronics, STEVAL-ISA055V1 Datasheet - Page 12
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STEVAL-ISA055V1
Manufacturer Part Number
STEVAL-ISA055V1
Description
BOARD EVAL BASED ON ST1S12
Manufacturer
STMicroelectronics
Type
DC/DC Switching Converters, Regulators & Controllersr
Specifications of STEVAL-ISA055V1
Mfg Application Notes
ST1S12 AppNote
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
1.2V
Current - Output
700mA
Voltage - Input
2.5 ~ 5.5V
Regulator Topology
Buck
Frequency - Switching
1.7MHz
Board Type
Fully Populated
Utilized Ic / Part
ST1S12
Input Voltage
2.5 V to 5.5 V
Output Voltage
1.2 V
Product
Power Management Modules
Silicon Manufacturer
ST Micro
Silicon Core Number
ST1S12XX
Kit Application Type
Power Management - Voltage Regulator
Application Sub Type
Synchronous Buck Converter
Kit Contents
Board
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
ST1S12x
Other names
497-8219
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISA055V1
Manufacturer:
STMicroelectronics
Quantity:
1
Typical performance characteristics
12/20
Figure 10. Efficiency vs. temperature
Figure 12. Quiescent current vs. temperature
Figure 14. Enable voltage vs. temperature
100
100
510
510
490
490
470
470
450
450
430
430
410
410
390
390
370
370
350
350
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
1.8
1.8
1.6
1.6
1.4
1.4
1.2
1.2
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0
0
1
1
0
0
-75
-75
-75
-75
-75
-75
-50
-50
-50
-50
-50
-50
V
V
V
V
V
V
IN
IN
-25
-25
IN
IN
IN
IN
-25
-25
=V
=V
-25
-25
=V
=V
=5.5V, I
=5.5V, I
EN
EN
EN
EN
=3V, V
=3V, V
=3.6V, V
=3.6V, V
0
0
0
0
0
0
OUT
OUT
OUT
OUT
=10mA, C
=10mA, C
=1.2V
=1.2V
25
25
25
25
25
25
FB
FB
=0.65V, C
=0.65V, C
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
T [°C]
50
50
50
50
50
50
IN
IN
= C
= C
IN
IN
OUT
OUT
=C
=C
75
75
75
75
75
75
=10µF, V
=10µF, V
OUT
OUT
=10µF, No Switching
=10µF, No Switching
100
100
100
100
100
100
I
I
I
I
OUT
OUT
OUT
OUT
OUT
OUT
=700mA
=700mA
=1.8V
=1.8V
=100mA
=100mA
125
125
125
125
125
125
Doc ID 14314 Rev 3
150
150
150
150
150
150
ON
ON
OFF
OFF
175
175
175
175
175
175
Figure 11. Supply current vs. temperature
Figure 13. Enable voltage vs. temperature
Figure 15. Reference line regulation vs.
-0.2
-0.2
-0.4
-0.4
-0.6
-0.6
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
1.8
1.8
1.6
1.6
1.4
1.4
1.2
1.2
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0.6
0.6
0.4
0.4
0.2
0.2
-75
-75
-0
-0
1
1
0
0
-75
-75
-75
-75
-50
-50
V
V
-50
-50
-50
-50
IN
IN
ST1S12XX, ST1S12XX12, ST1S12XX18
=2.5V, I
=2.5V, I
V
V
IN
IN
-25
-25
temperature
=V
=V
-25
-25
-25
-25
V
V
EN
EN
OUT
OUT
IN
IN
= 2.5V to 5.5V, C
= 2.5V to 5.5V, C
=V
=V
=10mA, C
=10mA, C
0
0
EN
EN
0
0
0
0
=3V, V
=3V, V
25
25
25
25
25
25
IN
IN
OUT
OUT
=C
=C
T [°C]
T [°C]
=1.2V, No Load
=1.2V, No Load
OUT
OUT
T [°C]
T [°C]
T [°C]
T [°C]
IN
IN
50
50
50
50
=C
=C
50
50
=10µF, V
=10µF, V
OUT
OUT
=10µF, I
=10µF, I
75
75
75
75
75
75
OUT
OUT
100
100
=1.8V
=1.8V
100
100
100
100
OUT
OUT
=10mA, V
=10mA, V
125
125
125
125
125
125
OUT
OUT
150
150
150
150
150
150
ON
ON
OFF
OFF
=1.8V
=1.8V
175
175
175
175
175
175