Diodes ZXLD1371 - Manual (Page 10)

ZXLD1371
ZXLD1371
Document number: DS35436 Rev. 1 - 2
10 of 42
www.diodes.com
February 2012
© Diodes Incorporated
A Product Line of
Diodes Incorporated
Typical Characteristics – Buck Mode – R
S
= 75m Ω – L = 33µH – I
LED
= 2.9A
2.6
2.7
2.8
2.9
3.0
3.1
3.2
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
L
E
D C
URRENT
(
A
)
0
100
200
300
500
600
700
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
1 LED 3 LEDs
2 LEDs
4 LEDs
SW
IT
CH
ING F
R
EQUENCY (
k
Hz
)
T = 25°C, V = V
L = 15µH, R = 75m
C = 100µF, V = 3.8V
A AUX IN
S
IN LED
Ω
4 LEDs
L = 22µH
400
5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
0
100
300
500
600
700
EF
F
IC
IE
N
C
Y
(%
)
400