Texas Instruments LM3448-230VAC, 6W Isolated Flyback LED Driver Eval Board LM3448-230VFLBK/NOPB LM3448-230VFLBK/NOPB Datenbogen
Produktcode
LM3448-230VFLBK/NOPB
170 180 190 200 210 220 230 240 250 260 270
0
50
100
150
200
250
300
350
400
L
ED
C
U
R
R
EN
T
(
mA)
INPUT VOLTAGE VRMS
11 LEDs
10 LEDs
9 LEDs
10 LEDs
9 LEDs
170 180 190 200 210 220 230 240 250 260 270
0
2
4
6
8
10
P
O
U
T
(W
)
INPUT VOLTAGE (VRMS)
11 LEDs
10 LEDs
9 LEDs
10 LEDs
9 LEDs
170 180 190 200 210 220 230 240 250 260 270
76
78
80
82
84
86
EF
F
IC
IEN
C
Y
(%
)
INPUT VOLTAGE (VRMS)
11 LEDs
10 LEDs
9 LEDs
10 LEDs
9 LEDs
170 180 190 200 210 220 230 240 250 260 270
0.80
0.85
0.90
0.95
1.00
P
O
W
ER
F
AC
T
O
R
INPUT VOLTAGE (VRMS)
11 LEDS
10 LEDs
9 LEDs
10 LEDs
9 LEDs
Typical Performance Characteristics
5
Typical Performance Characteristics
T
J
=25°C and V
CC
=12V, unless otherwise specified.
Figure 3. Efficiency vs. Line Voltage
Figure 4. Power Factor vs. Line Voltage
Figure 5. LED Current vs. Line Voltage
Figure 6. Output Power vs. Line Voltage
Figure 7. SW FET Drain Voltage Waveform
Figure 8. FLTR2 Waveform
(V
IN
= 230V
RMS
, 9 LEDs, I
LED
= 226mA)
(V
IN
= 230V
RMS
, 9 LEDs, I
LED
= 226mA)
3
SNOA555C – April 2011 – Revised May 2013
AN-2091 LM3448 - 230VAC, 6W Isolated Flyback LED Driver
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