ST1S12XX STMicroelectronics, ST1S12XX Datasheet - Page 11

• 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
7
Figure 4.
Figure 6.
Figure 8.
100
100
650
650
630
630
610
610
590
590
570
570
550
550
2.3
2.3
2.1
2.1
1.9
1.9
1.7
1.7
1.5
1.5
1.3
1.3
1.1
1.1
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
-75
-75
-75
-75
0
0
-50 -25
-50 -25
-50
-50
0.1
0.1
Typical performance characteristics
Unless otherwise specified, refer to the typical application circuit under the following
conditions: C
Voltage feedback vs. temperature
Oscillator frequency vs.
temperature
Efficiency vs. output current
V
V
IN
IN
-25
-25
V
V
=V
=V
IN
IN
V
V
=V
=V
EN
EN
0.2
0.2
IN
IN
=V
=V
=3.6V, V
=3.6V, V
EN
EN
0
0
0
0
EN
EN
=3.6V, I
=3.6V, I
=3.6V, I
=3.6V, I
25
25
25
25
0.3
0.3
FB
FB
OUT
OUT
IN
=0.65V, V
=0.65V, V
T [°C]
T [°C]
I
I
OUT
OUT
T [°C]
T [°C]
OUT
OUT
=from 10mA to 700mA, V
=from 10mA to 700mA, V
50
50
50
50
= 4.7 µF, C
=10mA, V
=10mA, V
0.4
0.4
[A]
[A]
75
75
75
75
OUT
OUT
OUT
OUT
=1.8V
=1.8V
0.5
0.5
100 125 150 175
100 125 150 175
100
100
=1.8V
=1.8V
OUT
125
125
0.6
0.6
Doc ID 14314 Rev 5
OUT
OUT
= 10 µF, L = 2.2 µH
150
150
=1.8V
=1.8V
0.7
0.7
175
175
Figure 5.
Figure 7.
Figure 9.
100
100
100
100
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
0
0
0
0
-75
-75
-75
-75
0
0
-50
-50
-50
-50
0.1
0.1
I
I
OUT
OUT
Efficiency vs. output current
Drop vs. temperature
Efficiency vs. temperature
Typical performance characteristics
-25
-25
-25
-25
=700mA
=700mA
V
V
IN
IN
0.2
0.2
=V
=V
EN
EN
0
0
0
0
, V
, V
=3V, I
=3V, I
OUT
OUT
0.3
0.3
=2.7V, Duty cycle=100%
=2.7V, Duty cycle=100%
25
25
25
25
OUT
OUT
=from 10mA to 700mA, V
=from 10mA to 700mA, V
I
I
T [°C]
T [°C]
T [°C]
T [°C]
OUT
OUT
0.4
0.4
50
50
50
50
[A]
[A]
V
V
75
75
75
75
IN
IN
0.5
0.5
=V
=V
EN
EN
100 125 150 175
100 125 150 175
100
100
=3.6V, V
=3.6V, V
I
I
OUT
OUT
I
I
0.6
0.6
OUT
OUT
=700mA
=700mA
125
125
=100mA
=100mA
OUT
OUT
OUT
OUT
=1.2V
=1.2V
=1.8V
=1.8V
0.7
0.7
150
150
11/20
175
175
0.8
0.8