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SC121 Datasheet(PDF) 9 Page - Semtech Corporation

Part # SC121
Description  Low Voltage Synchronous Boost Regulator
PDF  23 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC121 Datasheet(HTML) 9 Page - Semtech Corporation

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SC121
9
0.1
0.2
0.5
1
2
5
10
20
50
100 200
500
0
10
20
30
40
50
60
70
80
90
100
I
OUT
(mA)
R
1
= 976kΩ, R
2
= 412kΩ, L = 4.7μH, C
FB
= 22pF, T
A
= 25
ο
C
Typical Characteristics — V
OUT = 4.0V
0.1
0.2
0.5
1
2
5
10
20
50
100 200
500
0
10
20
30
40
50
60
70
80
90
100
I
OUT
(mA)
R
1
= 976kΩ, R
2
= 412kΩ, L = 4.7μH, C
FB
= 22pF, V
IN
= 2.4V
V
IN
= 2.4V
V
IN
= 1.2V
V
IN
= 3.6V
T
A
= 25°C
T
A
= 85°C
T
A
= –40°C
0
50
100
150
200
250
300
350
400
450
500
550
3.85
3.9
3.95
4
4.05
4.1
I
OUT
(mA)
R
1
= 976kΩ, R
2
= 412kΩ, L = 4.7μH, C
FB
= 22pF, T
A
= 25
ο
C
0
50
100
150
200
250
300
350
400
450
500
550
3.85
3.9
3.95
4
4.05
4.1
I
OUT
(mA)
R
1
= 976kΩ, R
2
= 412kΩ, L = 4.7μH, C
FB
= 22pF, V
IN
= 2.4V
V
IN
= 3.6V
V
IN
= 2.4V
V
IN
= 1.2V
T
A
= 25°C
T
A
= 85°C
T
A
= –40°C
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
3.85
3.9
3.95
4
4.05
4.1
V
IN
(V)
R
1
= 976kΩ, R
2
= 412kΩ, L = 4.7μH, C
FB
= 22pF, I
OUT
= 1mA
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
3.85
3.9
3.95
4
4.05
4.1
V
IN
(V)
R
1
= 976kΩ, R
2
= 412kΩ, L = 4.7μH, C
FB
= 22pF, I
OUT
= 110mA
T
A
= 25°C
T
A
= 85°C
T
A
= –40°C
T
A
= 25°C
T
A
= 85°C
T
A
= –40°C
Efficiency vs. I
OUT (VOUT = 4.0V)
Efficiency vs. I
OUT (VOUT = 4.0V)
Load Regulation (V
OUT = 4.0V)
Load Regulation (V
OUT = 4.0V)
Line Regulation — Low Load (V
OUT = 4.0V)
Line Regulation — High Load (V
OUT = 4.0V)



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