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LM3502SQ-25NOPB Fiches technique(PDF) 10 Page - Texas Instruments

No de pièce LM3502SQ-25NOPB
Description  Step-Up Converter for White LED Applications
Download  28 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM3502SQ-25NOPB Fiches technique(HTML) 10 Page - Texas Instruments

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0.0
EN1 PIN VOLTAGE (V)
0
30
5
10
15
20
25
1.0
2.0
3.0
4.0
5.0
-40
oC
25
oC
125
oC
0.0
2.0
0
5
10
15
20
25
EN2 PIN VOLTAGE (V)
1.0
3.0
4.0
5.0
-40
oC
125
oC
25
oC
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
TEMPERATURE (
oC)
94
98
-40
95
96
97
VIN = 2.5
0.0
CNTRL PIN VOLTAGE (V)
0
30
5
10
15
20
25
1.0
2.0
3.0
4.0
5.0
-40
oC
25
oC
125
oC
2
10
18
26 34
42
50
58
66
74
LED CURRENT (mA)
70
75
80
85
90
95
VIN = 2.7V
VIN = 5.5V
VIN = 3.3V
VIN = 4.2V
2
12
22
32
42
52
62
72
82
LED CURRENT (mA)
60
65
70
75
80
85
90
95
VIN = 2.7V
VIN = 5.5V
VIN = 3V
VIN = 4.2V
VIN = 3.3V
LM3502
SNVS339A – SEPTEMBER 2005 – REVISED AUGUST 2006
www.ti.com
Typical Performance Characteristics (continued)
( Circuit in Figure 1: L = DO1608C-223 and D = MBRM140T3. Efficiency:
η = POUT/PIN = [(VOUT – VFb) * IOUT]/[VIN * IIN]. TA=
25°C, unless otherwise stated.)
6 LED Efficiency
4 LED Efficiency
vs
vs
LED Current
LED Current
Figure 13.
Figure 14.
Cntrl Pin Current
Maximum Duty Cycle
vs
vs
Cntrl Pin Voltage
Temperature
Figure 15.
Figure 16.
En1 Pin Current
En2 Pin Current
vs
vs
En1 Pin Voltage
En2 Pin Voltage
Figure 17.
Figure 18.
10
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Product Folder Links: LM3502


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