Diodes ZXLD1374 - Manual (Page 9)

ZXLD1374
Document number: DS35032 Rev. 3 - 2
9 of 39
www.diodes.com
September 2012
© Diodes Incorporated
ZXLD1374
A Product Line of
Diodes Incorporated
Typical Characteristics
(cont.)
0%
20%
40%
60%
80%
100%
0 250 500 750 1000 1250
T PIN VOLTAGE (mV)
Figure 7 LED Current vs. T Voltage
ADJ
ADJ
LE
D
C
U
R
R
E
N
T
DI
M
M
IN
G
F
A
C
T
O
R
1.248
1.2485
1.249
1.2495
1.25
1.2505
1.251
1.2515
1.252
-40 -25 -10 5 20 35 50 65 80 95 110 125
JUNCTION TEMPERATURE (°C)
Figure 8 V vs. Temperature
REF
R
E
F
E
R
EN
C
E V
O
LT
A
G
E (
V
)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
-40 -25 -10 5 20 35 50 65 80 95 110 125
JUNCTION TEMPERATURE (°C)
Figure 9 R vs. Temperature
DS(ON)
P
O
WE
R
SW
IT
C
H
O
N-
R
ESI
S
TAN
C
E (
)
Ω
V = 12V
I = 1.3A
IN
LX
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
6 12 18 24 30 36 42 48 54 60
D
U
T
Y
INPUT VOLTAGE (V)
Figure 10 Duty Cycle vs. Input Voltage
T = 25 C
L = 33µH
R = 150m
Buck Mode
2 LEDS
A
S
°
Ω