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FP6737 Datasheet(PDF) 6 Page - Fitipower Integrated Technology Inc.

Part # FP6737
Description  Built-In OVP White LED Step-Up Converter in Tiny Package
PDF  12 Pages
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Manufacturer  FITIPOWER [Fitipower Integrated Technology Inc.]
Direct Link  http://www.fitipower.com/en_US/index.asp
Logo FITIPOWER - Fitipower Integrated Technology Inc.

FP6737 Datasheet(HTML) 6 Page - Fitipower Integrated Technology Inc.

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6
FP6737/A-1.6-DEC-2011
FP6737/A
85T
fitipower integrated technology lnc.
Typical Performance Curves (Continued)
-40
-20
0
20
40
60
80
100
120
244
246
248
250
252
Temperature
(
0C)
20
30
40
50
60
70
80
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
100HZ
200HZ
500HZ
1KHZ
4WLED
V
IN
=3.6V
L=22uH
C
IN
=1uF,Co=1uF
SHDN PIN PWM Duty(%)
Figure 10. Feedback Voltage vs. Temperature
Figure 11. Dimming Control by Shutdown PIN
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0
20
40
60
80
100
120
140
160
180
200
6WLEDs
L=22uH
C
IN
=1uF,Co=1uF
Supply Voltage (V)
Figure 12. Efficiency vs. LED Current
Figure 13. Feedback Voltage vs. Supply Voltage
-40
-20
0
20
40
60
80
100
0
20
40
60
80
100
120
140
160
180
200
V
IN
=3.6V
6WLEDs
L=22uH
C
IN
=1uF,Co=1uF
Temperature
(
oC)
Figure 14. Feedback Voltage vs. Temperature
Figure 15. Operation Waveform
VIN (ch3), 2V/Div
4WLEDs, VIN=3.0V
ILED=20mA, L=10μ
IL (ch4),100mA/Div
VSW(ch2),10V/Div
VO (ch1), 5V/Div
VSW(ch2),10V/Div
5
10
15
20
72
74
76
78
80
82
84
86
88
90
92
6LEDs
4LEDs
3LEDs
V
IN
=3.6V, L=22uH, D=SS14
LED current (mA)



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