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LM3503 Datasheet(PDF) 11 Page - Texas Instruments

No. de pieza LM3503
Descripción Electrónicos  Dual-Display Constant Current LED Driver with Analog Brightness Control
Download  28 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

LM3503 Datasheet(HTML) 11 Page - Texas Instruments

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background image
-40
TEMPERATURE (
oC)
0.249
0.250
0.251
0.252
0.253
0.254
0.255
0.256
0.257
-30
-20
-10
0
10
20
30
40
50
60
70
80
VIN = 5.5V
CNTRL = 1.6V
VIN = 2.7V
-40
TEMPERATURE (
oC)
0.119
0.120
0.121
0.122
0.123
0.124
0.125
0.126
0.127
-30
-20
-10
0
10
20
30
40
50
60
70
80
VIN = 2.7V
CNTRL = 0.8V
VIN = 5.5V
5.0
INPUT VOLTAGE (V)
690
700
710
720
730
740
750
760
770
780
5.5
4.5
4.0
3.5
3.0
2.5
85
oC
-40
oC
25
oC
5.0
INPUT VOLTAGE (V)
440
460
480
500
520
540
560
580
600
620
5.5
4.5
4.0
3.5
3.0
2.5
T = -40
oC
T = 25
oC
T = 85
oC
-40
80
TEMPERATURE (
oC)
-25 -10
5
20
35
50
65
VIN = 7.0V
690
700
710
720
730
740
750
760
780
770
VIN = 2.5V
LM3503
www.ti.com
SNVS329E – JULY 2005 – REVISED MAY 2013
Typical Performance Characteristics (continued)
(See Typical Application Circuit : L=DO1608C-223 and D=B150-13. Efficiency:
η = POUT/ PIN = [(VOUT – VFb ) * IOUT] / [VIN * IIN].
TA = +25°C, unless otherwise stated.)
Current Limit (LM3503-25)
Current Limit (LM3503-35/44)
vs
vs
VIN
Temperature
Figure 25.
Figure 26.
Current Limit (LM3503-35/44)
Feedback Voltage (VCntrl = 0.8V)
vs
vs
VIN
Temp
Figure 27.
Figure 28.
Feedback Voltage (VCntrl = 1.6V)
vs
Temp
VIN = 3.6V at 15mA & 4 Leds
Figure 29.
Figure 30.
Copyright © 2005–2013, Texas Instruments Incorporated
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