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SC461 Datasheet(PDF) 7 Page - Semtech Corporation

No. de pieza SC461
Descripción Electrónicos  EcoSpeed짰 DC-DC Buck Controller with Integrated LDO
PDF  31 Pages
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Fabricante Electrónico  SEMTECH [Semtech Corporation]
Página de inicio  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC461 Datasheet(HTML) 7 Page - Semtech Corporation

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SC461
7
Efficiency vs. Load — Power Save Mode
20%
30%
40%
50%
60%
70%
80%
90%
100%
0
1
2
3
4
5
6
7
8
9
10
IOUT (ADC)
12V
6V
24V
Characteristics in this section are based on using the Detailed Application Circuit.
Efficiency vs. Load — Forced Continuous Mode
20%
30%
40%
50%
60%
70%
80%
90%
100%
0
1
2
3
4
5
6
7
8
9
10
(ADC)
IOUT
12V
6V
24V
Load Regulation — Forced Continuous Mode
1.75
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.83
1.84
1.85
0
1
2
3
4
5
6
7
8
9
10
12V
24V
6V
IOUT (ADC)
Efficiency vs Load - 5V output
IOUT (ADC)
20%
30%
40%
50%
60%
70%
80%
90%
100%
0
1
2
3
4
5
6
7
8
9
10
12V
24V
Inductor: Cyntec PCMB135T-3R3MF
High-side MOSFET: IRF7811
Low-side MOSFET: IRF7832
Frequency 360kHz
Efficiency vs Load - 12V output
20%
30%
40%
50%
60%
70%
80%
90%
100%
0
1
2
3
4
5
6
IOUT (ADC)
18V
24V
Inductor: Cyntec PCMB104E-4R7MS
High-side MOSFET: IRF7811
Low-side MOSFET: IRF7832
Frequency 400kHz
Load Regulation — Power Save Mode
1.75
1.76
1.77
1.78
1.79
1.80
1.81
1.82
1.83
1.84
1.85
0
1
2
3
4
5
6
7
8
9
10
IOUT (ADC)
12V
24V
6V
Typical Characteristics
Internal 5V LDO bias, PSV enabled
Internal 5V LDO bias, FCM enabled
External 5V bias, PSV enabled
External 5V bias, FCM enabled
External 5V bias, PSV enabled
External 5V bias, FCM enabled



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