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A Product Line of
Diodes Incorporated
ZXLD1352
Typical Characteristics
For typical application circuit driving 1W Luxeon ? white LED(s) at V IN =12V and T amb =25°C unless otherwise stated.
1 0 0
9 5
E f f i c i e n c y v s N o . o f L E D s
L = 1 0 0 u H , R s = 0 . 3 3 O h m s
1 . 2
1
D u t y C y c l e v s I n p u t V o l t a g e
L = 1 0 0 u H , R s = 0 . 3 3 O h m s
9 0
8 5
8 0
7 5
7 0
1 L E D
2 L E D
3 L E D
4 L E D
5 L E D
6 L E D
7 L E D
8 L E D
0 . 8
0 . 6
0 . 4
0 . 2
0
1 L E D
2 L E D
3 L E D
4 L E D
5 L E D
6 L E D
7 L E D
8 L E D
5
1 0
1 5
2 0
2 5
3 0
5
1 0
1 5
2 0
2 5
3 0
6 0 0
5 0 0
V I N ( V )
O p e r a t i n g F r e q u e n c y v s I n p u t V o l t a g e
L = 1 0 0 u H , R s = 0 . 3 3 O h m s
8
6
4
V I N ( V )
O u t p u t c u r r e n t v a r i a t i o n w i t h S u p p l y V o l t a g e
L = 1 0 0 u H , R s = 0 . 3 3 O h m s
4 0 0
3 0 0
1 L E D
2 L E D
3 L E D
4 L E D
5 L E D
2
0
1 L E D
2 L E D
3 L E D
4 L E D
6 L E D
5
1 0
1 5
2 0
2 5
3 0
5 L E D
2 0 0
7 L E D
8 L E D
- 2
6 L E D
7 L E D
- 4
1 0 0
- 6
0
5
1 0
1 5
2 0
2 5
3 0
- 8
1 0 0
V I N ( V )
E f f i c i e n c y v s N o . o f L E D s
L = 4 7 u H , R s = 0 . 3 3 O h m s
1
V I N ( V )
D u t y C y c l e v s I n p u t V o l t a g e
L = 4 7 u H , R s = 0 . 3 3 O h m s
9 5
9 0
8 5
8 0
7 5
1
2
3
4
5
6
7
L E D
L E D
L E D
L E D
L E D
L E D
L E D
0 . 8
0 . 6
0 . 4
0 . 2
1
2
3
4
5
6
7
L E D
L E D
L E D
L E D
L E D
L E D
L E D
7 0
0
5
1 0
1 5
2 0
2 5
3 0
5
1 0
1 5
2 0
2 5
3 0
8 0 0
V I N ( V )
O p e r a t i n g F r e q u e n c y v s I n p u t V o l t a g e
L = 4 7 u H , R s = 0 . 3 3 O h m s
2 0
V I N ( V )
O u t p u t C u r r e n t V a r i a t i o n v s S u p p l y V o l t a g e
L = 4 7 u H , R s = 0 . 3 3 O h m s
7 0 0
6 0 0
5 0 0
4 0 0
3 0 0
1
2
3
4
5
L E D
L E D
L E D
L E D
L E D
1 5
1 0
5
0
1
2
3
4
5
L E D
L E D
L E D
L E D
L E D
2 0 0
1 0 0
6
7
L E D
L E D
- 5 5
1 0
1 5
2 0
2 5
3 0
6
7
L E D
L E D
0
- 1 0
5
1 0
1 5
2 0
2 5
3 0
- 1 5
V I N ( V )
V I N ( V )
ZXLD1352
Document number: DS33469 Rev. 3 - 2
8 of 21
www.diodes.com
December 2010
? Diodes Incorporated
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