lt3799 Linear Technology Corporation, lt3799 Datasheet - Page 6

• Manufacturer Part Number: lt3799
• Description: Lt3799 - Offline Isolated Flyback Led Controller With Active Pfc
• Manufacturer: Linear Technology Corporation

LT3799
TYPICAL PERFORMANCE CHARACTERISTICS
6
1.20
1.15
1.10
1.05
1.00
0.95
0.80
0.90
0.85
1.00
0.99
0.98
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.90
100
95
90
85
80
75
70
65
60
90
90
90
LED Current vs Input Voltage
Power Factor vs Input Voltage
Efficiency vs Input Voltage
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 120V
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 120V
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 120V
100
100
100
110
110
110
V
V
V
IN
IN
IN
120
120
120
(V
(V
(V
AC
AC
AC
)
)
)
130
130
130
140
140
140
3799 G18
3799 G24
3799 G21
150
150
150
1.20
1.15
1.10
1.05
1.00
0.95
0.80
1.00
0.99
0.98
0.97
0.96
0.95
0.92
0.91
0.90
0.90
0.85
0.94
0.93
100
95
90
85
80
75
70
65
60
170 180 190
170
170
LED Current vs Input Voltage
Power Factor vs Input Voltage
Efficiency vs Input Voltage
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 220V
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 220V
180 190
180 190
200
200
200
210
210
210
V
V
V
IN
IN
IN
220
220
220
(V
(V
(V
PAGE 17 SCHEMATIC:
OPTIMIZED FOR 220V
AC
AC
AC
230
230
230
)
)
)
240
240
240
250 260 270
250
250 260
260
3799 G25
3799 G19
3799 G22
270
270
1.20
1.15
1.10
1.05
1.00
0.95
0.80
1.00
0.99
0.98
0.97
0.96
0.95
0.92
0.91
0.90
0.90
0.85
0.94
0.93
100
95
90
85
80
75
70
65
60
90 110 130
90
90
LED Current vs Input Voltage
Power Factor vs Input Voltage
Efficiency vs Input Voltage
PAGE 17 SCHEMATIC:
UNIVERSAL
PAGE 17 SCHEMATIC:
UNIVERSAL
110 130
110 130
150
150
150
V
V
V
170
170
170
IN
IN
IN
(V
(V
(V
PAGE 17 SCHEMATIC:
UNIVERSAL
190
190
190
AC
AC
AC
)
)
)
210
210
210
230
230
230
250 270
250
250
3799p
3799 G20
3799 G23
3799 G26
270
270