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FP7103 Datasheet(PDF) 10 Page - Feeling Technology Corp.

Part # FP7103
Description  28V, 3A Buck Constant Current Switching Regulator for White LED
PDF  12 Pages
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Manufacturer  FEELING [Feeling Technology Corp.]
Direct Link  http://www.feeling-tech.com.tw/
Logo FEELING - Feeling Technology Corp.

FP7103 Datasheet(HTML) 10 Page - Feeling Technology Corp.

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FP7103
This datasheet contains new product information.
Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.94
10/12
Application Information
Typical Application Circuit
D1
SK34
C1
0.1µF
LED
C7
100µF
L1 10µH
C2
0.1µF
R1
IC1
FP7103
1
2
3
4
5
6
7
8
FB
EN
COMP
VCC
LX
LX
GND
GND
R2
0.25
VIN
C4
0.1µF
C6
100µF
VIN
0
FP7103 3W / 5W LED for DC Input Circuit
Dimming Control Circuit
Changing the duty cycle of PWM signal can get different LED current. The PWM signal is
recommended above 10kHz. The application circuit is shown in the following.
D1
SK34
C1
0.1µF
LED
C7
100µF
L1 10µH
C2
0.1µF
R1
IC1
FP7103
1
2
3
4
5
6
7
8
FB
EN
COMP
VCC
LX
LX
GND
GND
R2
0.25
VIN
0V~5V
PWM
R3
37K
R5
1K
C5
2.2µF
R4 2K
Dimming Control
C4
0.1µF
C6
100µF
VIN
0
The LED current can be calculated by the following equation:
2
R
5
R
3
R
)
V
Duty
V
(
4
R
V
I
FB
PWM
FB
LED



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