Datasheet

170180190200210220230240250260270
0
50
100
150
200
250
300
350
400
LED CURRENT (mA)
INPUT VOLTAGE V
RMS
11 LEDs
10 LEDs
9 LEDs
170 180 190 200 210 220 230 240 250 260 270
0
2
4
6
8
10
P
OUT
(W)
INPUT VOLTAGE (V
RMS
)
11 LEDs
10 LEDs
9 LEDs
170 180 190 200 210 220 230 240 250 260 270
76
78
80
82
84
86
EFFICIENCY (%)
INPUT VOLTAGE (V
RMS
)
11 LEDs
10 LEDs
9 LEDs
170180190200210220230240250260270
0.80
0.85
0.90
0.95
1.00
POWER FACTOR
INPUT VOLTAGE (V
RMS
)
11 LEDS
10 LEDs
9 LEDs
www.ti.com 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
Submit Documentation Feedback
Copyright © 2011–2013, Texas Instruments Incorporated