Texas Instruments LM3445 Evaluation Board LM3445-230VFLBK/NOPB LM3445-230VFLBK/NOPB 데이터 시트
제품 코드
LM3445-230VFLBK/NOPB
200.0
190.0
180.0
170.0
160.0
150.0
-50
-25
0
25
50
75
100 125 150
TEMPERATURE (°C)
t
O
N-
MI
N
(n
s)
V
O
F
F
(V
)
1.29
1.28
1.27
1.26
1.25
-50
-25
0
25
50
75
100 125 150
OFF Threshold at C11
TEMPERATURE (°C)
U
VL
O
(V
)
8.0
7.5
7.0
6.5
6.0
-50
-25
0
25
50
75
100 125 150
UVLO (V
CC
) Rising
UVLO (V
CC
) Falling
TEMPERATURE (°C)
BL
D
R
R
ESI
ST
O
R
(
Ö
)
300
280
260
240
220
200
-50
-25
0
25
50
75
100 125 150
TEMPERATURE (°C)
LINE VOLTAGE (V
AC
)
f
SW
(H
z)
300k
250k
200k
150k
100k
50k
0
80
90
100
110
120
130
140
C11 = 2.2 nF, R3 = 348 k
:
7 LEDs in Series (V
O
= 24.5V)
LINE VOLTAGE (V
AC
)
EF
F
IC
IEN
C
Y
(%
)
95.0
90.0
85.0
80.0
75.0
80
90
100
110
120
130
140
14 Series connected LEDs
10 Series connected LEDs
SNVS570L – JANUARY 2009 – REVISED MAY 2013
TYPICAL PERFORMANCE CHARACTERISTICS
f
SW
vs Input Line Voltage
Efficiency vs Input Line Voltage
Figure 3.
Figure 4.
BLDR Resistor vs Temperature
V
CC
UVLO vs Temperature
Figure 5.
Figure 6.
Min On-Time (t
ON
) vs Temperature
Off Threshold (C11) vs Temperature
Figure 7.
Figure 8.
Copyright © 2009–2013, Texas Instruments Incorporated
5
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