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SC4539EVB Datasheet(PDF) 6 Page - Semtech Corporation

Part # SC4539EVB
Description  High Effi ciency Boost Converter for up to 6 LEDS
Download  14 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC4539EVB Datasheet(HTML) 6 Page - Semtech Corporation

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6
Typical Characteristics (continued)
SC4539
I
BL Error vs. PWM Frequency at 50% Duty Cycle
I
BL vs. Duty Cycle at 200 Hz
PWM Operation at 50kHz and 15% Duty Cycle
4μs/div
PWM Operation at 200Hz and 1% Duty Cycle
PWM Operation at 32kHz and 50% Duty Cycle
10μs/div
PWM Operation at 32kHz and 10% Duty Cycle
0
20
40
60
80
100
0
20
40
60
80
100
32kHz
50kHz
200Hz
PWM Duty Cycle (%)
-6.0
-4.0
-2.0
0.0
2.0
4.0
6.0
0.1
1
10
100
PWM Frequency (kHz)
2ms/div
V
LX
(20V/div)
I
OUT
(20mA/div)
V
OUT
(20V/div)
V
EN
(2V/div)
V
LX
(20V/div)
I
OUT
(20mA/div)
V
OUT
(20V/div)
V
EN
(2V/div)
V
LX
(20V/div)
I
OUT
(20mA/div)
V
OUT
(10V/div)
V
EN
(2V/div)
V
LX
(20V/div)
I
OUT
(20mA/div)
V
OUT
(20V/div)
V
EN
(2V/div)
10μs/div


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