Texas Instruments LM3448 Evaluation Board LM3448-EDSNEV/NOPB LM3448-EDSNEV/NOPB 데이터 시트
제품 코드
LM3448-EDSNEV/NOPB
80
90
100
110
120
130
140
50
100
150
200
250
300
350
L
ED
C
U
R
R
EN
T
(
mA)
INPUT VOLTAGE (VRMS)
12 LEDs
10 LEDs
8 LEDs
10 LEDs
8 LEDs
80
90
100
110
120
130
140
4
5
6
7
8
P
O
U
T
(W
)
INPUT VOLTAGE VRMS
12 LEDs
10 LEDs
8 LEDs
10 LEDs
8 LEDs
80
90
100
110
120
130
140
74
76
78
80
82
84
EF
F
IC
IEN
C
Y
(%
)
INPUT VOLTAGE (VRMS)
12 LEDs
10 LEDs
8 LEDs
10 LEDs
8 LEDs
80
90
100
110
120
130
140
0.78
0.80
0.82
0.84
0.86
0.88
0.90
P
O
W
ER
F
AC
T
O
R
INPUT VOLTAGE VRMS
12 LEDs
10 LEDs
8 LEDs
10 LEDs
8 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. COFF Voltage (CH1), Inductor Current (CH4)
(V
IN
=120V
RMS
, 12 LEDs, I
LED
=181mA)
(V
IN
=120V
RMS
, 12 LEDs, I
LED
=181mA)
3
SNOA559B – October 2011 – Revised May 2013
AN-2127 LM3448 A19 Edison Retrofit Evaluation Board
Copyright © 2011–2013, Texas Instruments Incorporated