SC461 데이터 시트보기 (PDF) - Semtech Corporation
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SC461 Datasheet PDF : 31 Pages
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SC461
Typical Characteristics
Characteristics in this section are based on using the Detailed Application Circuit.
Efficiency vs. Load — Power Save Mode
External 5V bias, PSV enabled
100% 6V
90%
80%
24V 12V
70%
60%
50%
40%
30%
20%
0 1 2 3 4 5 6 7 8 9 10
IOUT (ADC)
Load Regulation — Power Save Mode
1.85
External 5V bias, PSV enabled
1.84
1.83
1.82
1.81 24V
1.80
1.79
6V 12V
1.78
1.77
1.76
1.75
0 1 2 3 4 5 6 7 8 9 10
IOUT (ADC)
Efficiency vs. Load — Forced Continuous Mode
100%
6V
External 5V bias, FCM enabled
90%
80%
24V 12V
70%
60%
50%
40%
30%
20%
0 1 2 3 4 5 6 7 8 9 10
IOUT (ADC)
Load Regulation — Forced Continuous Mode
External 5V bias, FCM enabled
1.85
1.84
1.83
1.82
1.81
24V
1.80
1.79
1.78 6V
12V
1.77
1.76
1.75
0 1 2 3 4 5 6 7 8 9 10
IOUT (ADC)
100% 12V
Efficiency vs Load - 5V output
Internal 5V LDO bias, PSV enabled
90%
80%
24V
70%
60%
50%
40%
30%
Inductor: Cyntec PCMB135T-3R3MF
High-side MOSFET: IRF7811
Low-side MOSFET: IRF7832
Frequency 360kHz
20%
0 1 2 3 4 5 6 7 8 9 10
IOUT (ADC)
100%
90%
80%
70%
60%
50%
40%
30%
20%
0
Efficiency vs Load - 12V output
Internal 5V LDO bias, FCM enabled
18V
24V
Inductor: Cyntec PCMB104E-4R7MS
High-side MOSFET: IRF7811
Low-side MOSFET: IRF7832
Frequency 400kHz
1
2
3
4
5
6
IOUT (ADC)
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