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W-52 Datasheet(PDF) 5 Page - Copal Electronics

Part # W-52
Description  CMOS White LED Driver
Download  11 Pages
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Manufacturer  COPAL [Copal Electronics]
Direct Link  http://www.nidec-copal-electronics.com/e
Logo COPAL - Copal Electronics

W-52 Datasheet(HTML) 5 Page - Copal Electronics

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W-52
5
TYPICAL CHARACTERISTICS
(VIN = 3.6 V, TAMB =25 C, CIN = 4.7 F, COUT =1 F, L = 6.8 H, unless otherwise specified.)
Figure 8. Switch Resistance vs. Input Voltage
Figure 9. Switch Resistance vs. Temperature
(
E
R
U
T
A
R
E
P
M
E
T
)
V
(
E
G
A
T
L
O
V
T
U
P
N
I
C)
6
5
4
3
2
0
0.2
0.4
0.6
0.8
1.0
125
100
75
50
25
0
25
50
0
0.2
0.4
0.6
0.8
1.0
Figure 10. LED Pin Voltage vs. LED Current
Figure 11. VSW,IL,&VOUT Signal Waveforms
LED CURRENT (mA)
40
32
24
16
8
0
0
50
100
150
200
250
300
Figure 12. Efficiency vs. Input Voltage
Figure 13. PWM on SHDN Pin Waveform
INPUT VOLTAGE (V)
6
5
4
3
2
60
65
70
75
80
85
VIN =3V
4 LEDs at 15 mA
VOUT =13V


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