Texas Instruments LM3448 Evaluation Board LM3448-EDSNEV/NOPB LM3448-EDSNEV/NOPB 데이터 시트
제품 코드
LM3448-EDSNEV/NOPB
-50 -25
0
25
50
75 100 125 150
150
160
170
180
190
200
MI
N
O
N
-T
IME
(n
s
)
TEMPERATURE (°C)
-50 -25
0
25
50
75 100 125 150
200
220
240
260
280
300
BL
D
R
R
ESI
ST
O
R
(
)
TEMPERATURE (°C)
80
90
100
110
120
130
140
140
160
180
200
220
240
L
ED
C
U
R
R
EN
T
(
mA)
INPUT VOLTAGE (VRMS)
8 LEDs
10 LEDs
12 LEDs
80
90
100
110
120
130
140
60
65
70
75
80
85
90
SW
IT
C
H
IN
G
F
R
EQ
U
EN
C
Y
(kH
z
)
INPUT VOLTAGE (VRMS)
8 LEDs
12 LEDs
10 LEDs
80
90
100
110
120
130
140
74
76
78
80
82
84
EF
F
IC
IEN
C
Y
(%
)
INPUT VOLTAGE (VRMS)
7 LEDs
9 LEDs
80
90
100
110
120
130
140
0.93
0.94
0.95
0.96
0.97
0.98
P
O
W
ER
F
AC
T
O
R
INPUT VOLTAGE (VRMS)
9 LEDs
7 LEDs
SNOSB51C – SEPTEMBER 2011 – REVISED MAY 2013
TYPICAL PERFORMANCE CHARACTERISTICS
T
J
= 25°C and V
CC
= 12V unless otherwise specified.
Efficiency vs. Input Line Voltage
(1)
Power Factor vs. Input Line Voltage
(1)
Figure 3.
Figure 4.
LED Current vs. Input Line Voltage
(2)
f
SW
vs. Input Line Voltage
(2)
Figure 5.
Figure 6.
Min On-Time (t
ON
) vs. Temperature
BLDR Resistor vs. Temperature
Figure 7.
Figure 8.
(1)
Data used for this plot taken from Design #3.
(2)
Data used for this plot taken from Design #2.
6
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