SC4540 データシートの表示（PDF） - Semtech Corporation
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SC4540 Datasheet PDF : 15 Pages
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SC4540
Typical Characteristics (continued)
Normalized I versus Duty Cycle
BL
100
80
60
40
20
200Hz
50kHz
32kHz
0
0
20
40
60
Duty Cycle (m A)
80
100
Typical Waveforms at V = 7.2V
IN
Typical Waveforms at V = 5.0V
IN
V (20V/div)
LX
V (50mV/div)
IN
V (100mV/div)
OUT
1μs/div
Typical Waveforms at V = 12V
IN
V (20V/div)
LX
V (50mV/div)
IN
V (20V/div)
LX
V (50mV/div)
IN
V (100mV/div)
OUT
V (20V/div)
LX
V (20V/div)
OUT
I (10mA/div)
OUT
V (5V/div)
EN
1μs/div
Start-Up Response
1ms/div
V (100mV/div)
OUT
1μs/div
PWM Operation at 200Hz and 1% Duty Cycle
V (20V/div)
LX
I (10mA/div)
OUT
V (5V/div)
EN
10μs/div
6
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