Datasheet

LT3799-1
6
37991f
TYPICAL PERFORMANCE CHARACTERISTICS
LED Current vs Input Voltage LED Current vs Input Voltage LED Current vs Input Voltage
Power Factor vs Input Voltage
Efficiency vs Input Voltage
Power Factor vs Input Voltage
Efficiency vs Input Voltage
Power Factor vs Input Voltage
Efficiency vs Input Voltage
V
IN
(V
AC
)
90
0.80
I
LED
(A)
0.90
1.00
1.10
100 110 130120 140
1.20
0.85
0.95
1.05
1.15
150
37991 G18
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 120V
V
IN
(V
AC
)
170
0.80
I
LED
(A)
0.90
1.00
1.10
180 190 220210200 240230 250
1.20
0.85
0.95
1.05
1.15
270260
37991 G19
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 220V
V
IN
(V
AC
)
90
0.80
I
LED
(A)
0.90
1.00
1.10
110 130 190170150 230210 250
1.20
0.85
0.95
1.05
1.15
270
37991 G20
PAGE 17 SCHEMATIC:
UNIVERSAL
V
IN
(V
AC
)
0.92
0.91
0.90
POWER FACTOR
0.94
0.96
0.98
1.00
0.93
0.95
0.97
0.99
37991 G21
90 100 110 130120 140 150
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 120V
V
IN
(V
AC
)
170
0.92
0.91
0.90
POWER FACTOR ( )
0.94
0.96
0.98
180 190 220210200 240230 250 260
1.00
0.93
0.95
0.97
0.99
270
37991 G22
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 220V
V
IN
(V
AC
)
90
0.92
0.91
0.90
POWER FACTOR
0.94
0.96
0.98
110 130 190170150 230210 250
1.00
0.93
0.95
0.97
0.99
270
37991 G23
PAGE 17 SCHEMATIC:
UNIVERSAL
V
IN
(V
AC
)
70
65
60
EFFICIENCY (%)
80
90
100
75
85
95
37991 G24
90 100 110 130120 140 150
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 120V
V
IN
(V
AC
)
70
65
60
EFFICIENCY (%)
80
90
100
75
85
95
37991 G25
170 180 190 220210200 240230 250 260 270
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 220V
V
IN
(V
AC
)
70
65
60
EFFICIENCY (%)
80
90
100
75
85
95
37991 G26
90 110 130 190170150 230210 250 270
PAGE 17 SCHEMATIC:
UNIVERSAL