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LM3445 Datasheet(PDF) 5 Page - Texas Instruments

Part # LM3445
Description  Triac Dimmable Offline LED Driver
Download  37 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3445 Datasheet(HTML) 5 Page - Texas Instruments

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200.0
190.0
180.0
170.0
160.0
150.0
-50
-25
0
25
50
75
100 125 150
TEMPERATURE (°C)
1.29
1.28
1.27
1.26
1.25
-50
-25
0
25
50
75
100 125 150
OFF Threshold at C11
TEMPERATURE (°C)
8.0
7.5
7.0
6.5
6.0
-50
-25
0
25
50
75
100 125 150
UVLO (VCC) Rising
UVLO (VCC) Falling
TEMPERATURE (°C)
300
280
260
240
220
200
-50
-25
0
25
50
75
100 125 150
TEMPERATURE (°C)
LINE VOLTAGE (VAC)
300k
250k
200k
150k
100k
50k
0
80
90
100
110
120
130
140
C11 = 2.2 nF, R3 = 348 k:
7 LEDs in Series (VO = 24.5V)
LINE VOLTAGE (VAC)
95.0
90.0
85.0
80.0
75.0
80
90
100
110
120
130
140
14 Series connected LEDs
10 Series connected LEDs
LM3445
www.ti.com
SNVS570K – JANUARY 2009 – REVISED NOVEMBER 2011
Typical Performance Characteristics
fSW vs Input Line Voltage
Efficiency vs Input Line Voltage
Figure 3.
Figure 4.
BLDR Resistor vs Temperature
VCC UVLO vs Temperature
Figure 5.
Figure 6.
Min On-Time (tON) vs Temperature
Off Threshold (C11) vs Temperature
Figure 7.
Figure 8.
Copyright © 2009–2011, Texas Instruments Incorporated
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