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LM3519 Datasheet(PDF) 7 Page - Texas Instruments

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Part # LM3519
Description  High Frequency Boost White LED Driver with High-Speed PWM Brightness Control
PDF  20 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3519 Datasheet(HTML) 7 Page - Texas Instruments

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background image
2.7
3.0
3.3
3.6
3.9
4.2
4.5
VIN (V)
1 PH
3.3 PH
2.2 PH
4 LEDS
100
150
200
250
300
350
400
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
VIN (V)
3.3 PH
2.2 PH
1 PH
1.5
4.5
6.0
7.5
9.0
10.5
3.0
4 LEDs
2.7
3.0
3.3
3.6
3.9
4.2
4.5
VIN (V)
2 LEDS
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
3.3 PH
2.2 PH
1 PH
4.0
5.0
6.0
7.0
8.0
9.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
VIN (V)
-40°C and 85°C
4 LEDs
1 PH,
25°C
10
20
30
40
50
60
70
80
90 100
DUTY CYCLE (%)
1
4
7
10
13
16
19
22
25
50 kHz
20 kHz
30 kHz
EN = 20 kHz, 30 kHz, and 50 kHz
2.7
3.0
3.3
3.6
3.9
4.2
4.5
VIN (V)
3.3 PH
3 LEDS
2.2 PH
1 PH
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
LM3519
www.ti.com
SNVS394A – AUGUST 2005 – REVISED SEPTEMBER 2005
Typical Performance Characteristics (continued)
(See Figure 1: VIN = 3.6V, CIN = 4.7µF and COUT = 1µF, L = 2.2µH and 4 LEDs. TA = +25°C, unless otherwise stated.)
IOUT
vs
Switching Frequency
PWM Duty Cycle
vs
(VIN = 3.6V, L = 1µH)
VIN
Switching Frequency
Switching Frequency
vs
vs
VIN
VIN
Switching Frequency
Peak Inductor Current
vs
vs
VIN
VIN
Copyright © 2005, Texas Instruments Incorporated
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