ST1S12XX18 STMICROELECTRONICS [STMicroelectronics], ST1S12XX18 Datasheet - Page 13

• Manufacturer Part Number: ST1S12XX18
• Description: Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switching regulator in TSOT23-5L
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Figure 16. Reference load regulation vs
Figure 18. PMOS switch on resistance vs
Figure 20. Switching current limitation vs
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
2.5
2.5
1.5
1.5
0.5
0.5
0.005
0.005
0.004
0.004
0.003
0.003
0.002
0.002
0.001
0.001
0
0
3
3
2
2
1
1
0
0
-75
-75
2
2
0
0
-75
-75
-50
-50
2.5
2.5
-50
-50
temperature
temperature
V
V
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
IN
IN
25
25
=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
=C
=C
75
75
OUT
OUT
4.5
4.5
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
=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
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
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
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
0
0
2
2
1
1
0
0
2
2
-75
-75
-75
-75
0
0
-50
-50
-50
-50
1
1
temperature
temperature
V
V
-25
-25
IN
IN
-25
-25
=V
=V
EN
EN
V
V
2
2
=3.6V, C
=3.6V, C
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