ST1S12XX STMicroelectronics, ST1S12XX Datasheet - Page 13

• Manufacturer Part Number: ST1S12XX
• Description: Synchronous rectification with inhibit, 0.7 A, 1.7 MHz adjustable, step-down switching regulator
• Manufacturer: STMicroelectronics

Specifications of ST1S12XX

• Typical Efficiency: > 90%
• Not Switching Quiescent Current: max 650 μA over temperature range

ST1S12XX, ST1S12XX12, ST1S12XX18
Figure 16. Reference load regulation vs.
Figure 18. PMOS switch on resistance vs.
Figure 20. Switching current limitation vs.
2.5
2.5
1.5
1.5
0.5
0.5
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0.005
0.005
0.004
0.004
0.003
0.003
0.002
0.002
0.001
0.001
3
3
2
2
1
1
0
0
0
0
-75
-75
2
2
0
0
-75
-75
-50
-50
2.5
2.5
-50
-50
V
V
temperature
temperature
input voltage
IN
IN
-25
-25
=V
=V
V
V
V
V
-25
-25
IN
IN
IN
IN
EN
EN
=V
=V
3
3
=3.6V, I
=3.6V, I
=3.6V, C
=3.6V, C
EN
EN
0
0
from 2.5 to 5.5V, C
from 2.5 to 5.5V, C
0
0
OUT
OUT
3.5
3.5
25
25
IN
IN
=C
=C
from 10mA to 0.7A, V
from 10mA to 0.7A, V
25
25
OUT
OUT
T [°C]
T [°C]
V
V
T [°C]
T [°C]
50
50
IN
IN
=10µF, V
=10µF, V
4
4
50
50
[V]
[V]
IN
IN
75
75
75
75
=C
=C
4.5
4.5
OUT
OUT
OUT
OUT
=1.2V
=1.2V
100
100
=10µF, V
=10µF, V
100 125 150 175
100 125 150 175
OUT
OUT
5
5
=1.8V
=1.8V
125
125
OUT
OUT
Doc ID 14314 Rev 5
=1.8V
=1.8V
5.5
5.5
150
150
175
175
6
6
Figure 17. NMOS switch on resistance vs.
Figure 19. Switching current limitation vs.
Figure 21. Output voltage vs. input voltage
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
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
2.6
2.6
2.3
2.3
1.7
1.7
1.4
1.4
1.1
1.1
0.8
0.8
0.5
0.5
2
2
1
1
0
0
0
0
2
2
-75
-75
-75
-75
0
0
-50
-50
-50
-50
1
1
temperature
temperature
Typical performance characteristics
V
V
-25
-25
-25
-25
IN
IN
=V
=V
EN
EN
V
V
=3.6V, C
=3.6V, C
2
2
IN
IN
0
0
0
0
=V
=V
V
V
EN
EN
IN
IN
=V
=V
=3.6V, C
=3.6V, C
V
V
25
25
25
25
IN
IN
IN
IN
EN
EN
=C
=C
3
3
[V]
[V]
from 0 to 5.5V, I
from 0 to 5.5V, I
OUT
OUT
T [°C]
T [°C]
T [°C]
T [°C]
C
C
50
50
50
50
IN
IN
IN
IN
=10µF, V
=10µF, V
=C
=C
=C
=C
OUT
OUT
OUT
OUT
4
4
75
75
75
75
=10µF
=10µF
=10µF, V
=10µF, V
OUT
OUT
OUT
OUT
=1.8V
=1.8V
100
100
100
100
=700mA,
=700mA,
5
5
OUT
OUT
=1.2V
=1.2V
125
125
125
125
6
6
150
150
150
150
125°C
125°C
25°C
25°C
0°C
0°C
-25°C
-25°C
-40°C
-40°C
13/20
175
175
175
175