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SC3303 Datasheet(PDF) 8 Page - Semtech Corporation

Part # SC3303
Description  3A EcoSpeed Step-Down Regulator with LDO and Ultrasonic Power Save
PDF  26 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC3303 Datasheet(HTML) 8 Page - Semtech Corporation

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8
SC3303
8
Typical Characteristics
Characteristics are based on a circuit with V
IN
= 24V, L = 10μH (DCR = 30mΩ), C
OUT
= 141μF, V
OUT
= 3.3V, R
TON
= 154kΩ.
0
10
20
30
40
50
60
70
80
90
100
0.001
0.010
0.100
1.000
10.000
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
IOUT (ADC)
VIN = 24V
VIN = 20V
VIN = 28V
VIN = 12V
Efficiency
PLOSS
VIN = 12V
VIN = 20V
VIN = 24V
VIN = 28V
Efficiency — Power Loss vs. I
OUT
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
0.001
0.010
0.100
1.000
10.00
0.000
0.025
0.050
0.075
0.100
0.125
0.150
0.175
0.200
0.225
0.250
IOUT (ADC)
VIN = 24V
VIN = 28V
VIN = 12V
VIN = 20V
VIN = 24V
VIN = 28V
VIN = 12V
VIN = 20V
VOUT
Ripple
Load Regulation — Ripple vs. I
OUT
75
78
80
83
85
88
90
93
95
8
1216202428
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Efficiency
PLOSS
Input Voltage (V)
Efficiency — Power Loss vs. V
IN
0
50
100
150
200
250
300
350
400
450
500
0.0
0.5
1.0
1.5
2.0
2.5
3.0
IOUT (ADC)
Frequency vs. I
OUT
0
50
100
150
200
250
300
350
400
450
500
6
8
10
12
14
16
18
20
22
24
26
28
Input Voltage (V)
Frequency vs. V
IN
I
OUT
= 1.5A
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
812
16
20
24
28
0.000
0.025
0.050
0.075
0.100
0.125
0.150
0.175
0.200
0.225
0.250
Input Voltage (V)
Line Regulation — Ripple vs. V
IN
I
OUT
= 1.5A
I
OUT
= 1.5A



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