Zxld1371, Typical characteristics, A product line of diodes incorporated – Diodes ZXLD1371 User Manual

Page 11: Buck mode – r

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ZXLD1371

ZXLD1371

Document number: DS35436 Rev. 1 - 2

11 of 42

www.diodes.com

February 2012

© Diodes Incorporated

A Product Line of

Diodes Incorporated

Typical Characteristics –

Buck Mode – R

S

=150m

Ω - L = 33µH – I

LED

= 1.45A

0

100

200

300

600

700

LE

D

C

U

R

R

EN

T

(A

)

400

5

10

15

20

25

30

35

40

INPUT VOLTAGE (V)

1 LED

10

20

25

30

1 ~ 16 LEDs

T = 25°C,

V

L = 33µH, R = 150m

C

= 100µF

A

AUX,

S

IN

V

=

IN

Ω

2 LEDs

3 LEDs

4 LEDs

6 LEDs

5 LEDs

8 LEDs

10 LEDs

16 LEDs

12 LEDs

14 LEDs

5

10

55

60

15

20

25

30

45

50

35

40

V (V)

IN

1000

900

100

0

800

700

300

200

600

500

400

SW

IT

C

H

IN

G F

R

E

Q

U

E

N

C

Y

(k

H

z)

5

10

15

20

25

30

35

40

45

50

55

60

100

E

F

F

IC

IE

N

C

Y

(

%

)

V (V)

IN

95

90

85

80

75

70

65

60

3 LEDs

1 LED

5 LEDs

2 LEDs

4 LEDs

6 LEDs

8 LEDs

10 LEDs

14 LEDs

16 LEDs

12 LEDs

T = 25°C,

V

L = 33µH, R = 150m

C

= 100µF

A

AUX,

S

IN

V

=

IN

Ω

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