ST1S10 STMicroelectronics, ST1S10 Datasheet - Page 18

• Manufacturer Part Number: ST1S10
• Description: Monolithic synchronous step-down regulator
• Manufacturer: STMicroelectronics

Specifications of ST1S10

• Input Voltage Range: 2.5 V to 18 V
• Max Iout: 3 A
• High Internal Switching Frequency: 900 kHz
• Quiescent Current: < 6 μA in inhibit state

Typical performance characteristics
18/26
Figure 15. ON mode quiescent current vs.
Figure 17. PMOS ON resistance vs.
Figure 19. Efficiency vs. temperature
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
320
320
270
270
220
220
170
170
120
120
100
100
70
70
20
20
90
90
80
80
70
70
60
60
50
50
1
1
0
0
-50
-50
-50
-50
-50
-50
-25
-25
-25
-25
-25
-25
temperature
temperature
V
V
IN-A
IN-A
=V
=V
V
V
IN-A
IN-A
IN-SW
IN-SW
0
0
0
0
0
0
=V
=V
=12V, V
=12V, V
TEMPERATURE [°C]
TEMPERATURE [°C]
IN-SW
IN-SW
TEMPERATURE [°C]
TEMPERATURE [°C]
V
V
TEMPERATURE [°C]
TEMPERATURE [°C]
IN
IN
=V
=V
=12V, I
=12V, I
25
25
25
25
25
25
INH
INH
INH
INH
=12V, V
=12V, V
=1.2V, V
=1.2V, V
SW
SW
=750mA
=750mA
50
50
50
50
OUT
OUT
50
50
OUT
OUT
=5V, I
=5V, I
=0.8V
=0.8V
OUT
OUT
75
75
75
75
75
75
=3A
=3A
100
100
100
100
100
100
Doc ID 13844 Rev 4
125
125
125
125
125
125
Figure 16. Shutdown mode quiescent current
Figure 18. NMOS ON resistance vs.
Figure 20. Efficiency vs. output current
120
120
110
110
100
100
100
100
7
7
6
6
5
5
4
4
3
3
2
2
1
1
0
0
90
90
80
80
70
70
60
60
50
50
90
90
80
80
70
70
60
60
50
50
-50
-50
-50
-50
0
0
-25
-25
-25
-25
vs. temperature
V
V
temperature
0.5
0.5
IN-A
IN-A
=V
=V
IN-SW
IN-SW
V
V
0
0
IN-A
IN-A
0
0
=12V, V
=12V, V
OUTPUT CURRENT [A]
OUTPUT CURRENT [A]
=V
=V
1
1
IN-SW
IN-SW
TEMPERATURE [°C]
TEMPERATURE [°C]
TEMPERATURE [°C]
TEMPERATURE [°C]
V
V
IN
IN
25
25
INH
INH
=12V, I
=12V, I
=V
=V
25
25
=GND, V
=GND, V
INH
INH
=12V, V
=12V, V
SW
SW
1.5
1.5
=750mA
=750mA
50
50
OUT
OUT
50
50
OUT
OUT
=0.8V
=0.8V
=5V, T
=5V, T
2
2
75
75
75
75
J
J
=25°C
=25°C
2.5
2.5
100
100
100
100
ST1S10
125
125
125
125
3
3