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SC656 Datasheet(PDF) 7 Page - Semtech Corporation

Part # SC656
Description  Backlight Driver for 7 LEDs with Charge Pump and PWM Control
PDF  17 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC656 Datasheet(HTML) 7 Page - Semtech Corporation

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SC656
7
Typical Characteristics (continued)
PWM Accuracy — 4.2V
VIN = 4.2V, RISET = 4.99kΩ, Calculated IBL = (100/RISET) x Duty Cycle
Mea�ure� IBL (mA�
0
4
8
12
16
20
0
4
8
12
16
20
50kHz
200Hz
32kHz
PWM Accuracy — 4.2V
PWM Accuracy — 4.2V
VIN = 3.7V, RISET = 4.99kΩ, Calculated IBL = (100/RISET) x Duty Cycle
Mea�ure� IBL (mA�
0
4
8
12
16
20
0
4
8
12
16
20
200Hz
50kHz
32kHz
PWM Accuracy — 3.7V
PWM Accuracy — 4.2V
VIN = 2.9V, RISET = 4.99kΩ, Calculated IBL = (100/RISET) x Duty Cycle
Mea�ure� IBL (mA�
0
4
8
12
16
20
0
4
8
12
16
20
50kHz
32kHz
200Hz
PWM Accuracy — 2.9V
PWM Accuracy — 4.2V
VIN = 4.2V, RISET = 4.99kΩ
0
20
40
60
80
100
0
20
40
60
80
100
PWM Duty Cycle (%�
200Hz
50kHz
32kHz
Percentage of Maximum I
BL — 4.2V
PWM Accuracy — 4.2V
VIN = 3.7V, RISET = 4.99kΩ
PWM Duty Cycle (%�
0
20
40
60
80
100
0
20
40
60
80
100
50kHz
32kHz
200Hz
Percentage of Maximum I
BL — 3.7V
PWM Accuracy — 4.2V
VIN = 2.9V, RISET = 4.99kΩ
PWM Duty Cycle (%�
0
20
40
60
80
100
0
20
40
60
80
100
50kHz
32kHz
200Hz
Percentage of Maximum I
BL — 2.9V



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