744770933 查看數據表（PDF） - Diodes Incorporated.
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744770933 Datasheet PDF : 33 Pages
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A Product Line of
Diodes Incorporated
ZXLD1370
Typical Characteristics – Buck Mode – Rs = 300mΩ - L = 47µH - ILED = 750mA
0.7 40
0.7 35
0.7 30
TA = 25°C
VAUX = VIN
0.7 25
0.7 20
0.7 15
6.5
10 00
90 0
80 0
70 0
60 0
50 0
40 0
30 0
20 0
10 0
0
6.5
10 0%
95 %
2 LEDs
3 LEDs
5 LEDs
7 LEDs
9 LEDs
11 LEDs
13 LEDs
15 LEDs
11 15.5 20 24.5 29 33.5 38 42.5 47 51.5 56
Input Voltage (V)
Figure 4: ILED vs. Input & Number of LED
2 LEDs 3 LEDs 5 LEDs 7 LEDs 9 LEDs 11 LEDs 13 LEDs 15 LEDs
TA = 25°C
VAU X = VIN
60 .5
11 15.5 20
24 .5
29 33.5 38
Input Voltage (V)
42.5 47
51.5 56 60.5
Figure 5: Frequency ZXLD1370 - Buck Mode - L47μH
90 %
85 %
80 %
75 %
TA = 25°C
VAU X = VIN
70 %
65 %
2 LEDs 3 LEDs 5 LEDs 7 LEDs 9 LEDs 11 LEDs 13 LEDs 15 LEDs
60 %
6.5
11 15.5 20 24.5 29 33.5 38 42.5 47 51.5 56 60.5
Input Voltage (V)
Figure 6: Efficiency vs. Input Voltage & Number of LED
ZXLD1370
Document number: DS32165 Rev. 2 - 2
7 of 33
www.diodes.com
May 2010
© Diodes Incorporated
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