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ZXLD1374 датащи(PDF) 9 Page - Diodes Incorporated

номер детали ZXLD1374
подробное описание детали  60V HIGH ACCURACY 1.5A BUCK/BOOST/BUCK-BOOST LED DRIVER CONVERTER
PDF  35 Pages
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производитель  DIODES [Diodes Incorporated]
домашняя страница  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZXLD1374 датащи(HTML) 9 Page - Diodes Incorporated

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ZXLD1374
ZXLD1374
Document number: DS35032 Rev. 1 - 2
Page 9 of 35
www.diodes.com
October 2010
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Typical Characteristics – Buck Mode – RS = 291mΩ - L = 33µH - ILED = 750mA
0.675
0.700
0.725
0.750
0.775
0.800
0.825
6
12
18
24
30
36
42
48
54
60
Input Voltage (V)
Figure 14. I
vs. Input Voltage and Number of LED
LED
T = 25°C
V
= V
L = 33µH
R = 291m
A
AUX
IN
S
Ω
3 LEDs
1 LED
5 LEDs
7 LEDs
11 LED s
13 LEDs
9 LEDs
15 LEDs
0
100
200
300
400
500
600
700
800
900
1000
6
12
18
24
30
36
42
48
54
60
Input Voltage (V)
Figure 15. Frequency ZXLD1374 - Buck Mode = L = 47 H
μ
T = 25°C
V
= V
L = 33µH
R = 291m
A
AUX
IN
S
Ω
15 LEDs
13 LEDs
11 LED s
9 LED s
7 LED s
5 LED s
3 LED s
1 LED
60%
65%
70%
75%
80%
85%
90%
95%
100%
6
1218
2430
36
42
48
54
60
Input Voltage (V)
Figure 16. Efficiency vs. Input Voltage and Number of LED
T = 25°C
V
= V
L = 33µH
R = 291m
A
AUX
IN
S
Ω
15 LEDs
13 LEDs
11 LED s
9 LED s
7 LED s
5 LED s
3 LED s
1 LED



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