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LM3429 Datasheet(PDF) 7 Page - Texas Instruments

No. de pieza LM3429
Descripción Electrónicos  LM3429Q1 N-Channel Controller for Constant Current LED Drivers
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

LM3429 Datasheet(HTML) 7 Page - Texas Instruments

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ICSH (éA)
1.0
0.8
0.6
0.4
0.2
0.0
0
20
40
60
80
100
DUTY CYCLE (%)
1.0
0.8
0.6
0.4
0.2
0.0
0
20
40
60
80
100
100 Hz
500 Hz
VIN (V)
1.00
0.99
0.98
0.97
0.96
5
10
15
20
25
30
VIN (V)
1.05
1.03
1.01
0.99
0.97
0
16
32
48
64
80
VIN (V)
100
95
90
85
80
10
15
20
25
30
VIN (V)
100
95
90
85
80
75
70
0
16
32
48
64
80
LM3429
www.ti.com
SNVS616F – APRIL 2009 – REVISED JANUARY 2010
Typical Performance Characteristics
TA=+25°C and VIN = 14V unless otherwise specified
Boost Efficiency
Buck-Boost Efficiency
vs.
vs.
Input Voltage
Input Voltage
VO = 32V (9 LEDs)
(1)
VO = 20V (6 LEDs)
(2)
Boost LED Current
Buck-boost LED Current
vs.
vs.
Input Voltage
Input Voltage
VO = 32V (9 LEDs)
(1)
VO = 20V (6 LEDs)
(2)
Analog Dimming
PWM Dimming
VO = 20V (6 LEDs)
(2)
VO = 20V (6 LEDs)
(2)
(1)
The measurements were made using the standard boost evaluation board from AN-1986.
(2)
The measurements were made using the standard buck-boost evaluation board from AN-1985.
Copyright © 2009–2010, Texas Instruments Incorporated
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