ST1S10 STMicroelectronics, ST1S10 Datasheet - Page 17

• 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

ST1S10
8
Figure 9.
Figure 11. Max duty cycle vs. temperature
Figure 13. Reference line regulation vs.
830
830
830
820
820
820
810
810
810
800
800
800
790
790
790
780
780
780
770
770
770
760
760
760
-0.1
-0.1
-0.2
-0.2
92
92
90
90
88
88
86
86
84
84
82
82
80
80
0.2
0.2
0.1
0.1
0
0
-50
-50
-50
-50
-50
-50
-50
-25
-25
-25
-25
-25
-25
-25
Typical performance characteristics
Unless otherwise specified, refer to the typical application circuit under the following
conditions: T
I
Voltage feedback vs. temperature
temperature
OUT
V
V
IN-A
IN-A
=V
=V
= 10 mA, C
0
0
IN-SW
IN-SW
0
0
0
0
0
V
V
V
V
TEMPERATURE [°C]
TEMPERATURE [°C]
TEMPERATURE [°C]
IN
IN
=V
=V
IN-A
IN-A
=V
=V
TEMPERATURE [°C]
TEMPERATURE [°C]
TEMPERATURE [°C]
TEMPERATURE [°C]
INH
INH
=V
=V
25
25
INH
INH
25
25
25
25
25
from 2.5 to 20V, V
from 2.5 to 20V, V
IN-SW
IN-SW
=12V, V
=12V, V
J
= 25°C, V
=V
=V
INH
INH
IN
50
50
50
50
50
OUT
OUT
50
50
=12V, V
=12V, V
= 4.7 µF + 0.1 µF, C
=0.8V, I
=0.8V, I
OUT
OUT
75
75
FB
FB
75
75
75
75
75
=0V
=0V
IN
OUT
OUT
=0.8V, I
=0.8V, I
=10mA
=10mA
= V
100
100
100
100
100
OUT
OUT
100
100
IN-SW
Doc ID 13844 Rev 4
=10mA
=10mA
125
125
125
125
125
125
125
= V
OUT
IN-A
Figure 10. Oscillator frequency vs.
Figure 12. Inhibit threshold vs. temperature
Figure 14. Reference load regulation vs.
1.2
1.2
1.1
1.1
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
= 22 µF, L1 = 3.3 µH.
1.4
1.4
1.2
1.2
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
-0.2
-0.2
-0.5
-0.5
= V
1
1
1.3
1.3
0.7
0.7
0.4
0.4
0.1
0.1
1
1
0
0
-50
-50
1
1
-50
-50
-25
-25
INH
-25
-25
= 12 V, V
-25
-25
temperature
temperature
Typical performance characteristics
0
0
V
V
V
V
IN-A
IN-A
IN-A
IN-A
0
0
=V
=V
=V
=V
0
0
IN-SW
IN-SW
IN-SW
IN-SW
SYNC
V
V
25
25
IN-A
IN-A
TEMPERATURE [°C]
TEMPERATURE [°C]
=2.5V, V
=2.5V, V
=V
=V
TEMPERATURE [°C]
TEMPERATURE [°C]
TEMPERATURE [°C]
TEMPERATURE [°C]
=V
=V
25
25
INH
INH
25
25
IN-SW
IN-SW
=12V, I
=12V, I
= GND, V
OUT
OUT
=V
=V
50
50
=0.8V, I
=0.8V, I
INH
INH
OUT
OUT
50
50
50
50
=12V, V
=12V, V
from 10mA to 3A
from 10mA to 3A
OUT
OUT
75
75
=10mA
=10mA
75
75
OUT
FB
FB
75
75
=0V
=0V
= 5 V,
100
100
100
100
100
100
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125
125
125
125
125
125