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LM3429 Folha de dados(PDF) 7 Page - Texas Instruments

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Nome de Peças LM3429
Descrição Electrónicos  N-Channel Controller for Constant Current LED Drivers
Download  62 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM3429 Folha de dados(HTML) 7 Page - Texas Instruments

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DUTY CYCLE (%)
1.0
0.8
0.6
0.4
0.2
0.0
0
20
40
60
80
100
100 Hz
500 Hz
ICSH (éA)
1.0
0.8
0.6
0.4
0.2
0.0
0
20
40
60
80
100
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, LM3429-Q1
www.ti.com
SNVS616H – APRIL 2009 – REVISED JULY 2015
6.6 Typical Characteristics
TA= 25°C and VIN = 14 V unless otherwise specified. The measurements for Figure 1 and Figure 3 were made using the
standard boost evaluation board from AN-1986 (SNVA404). The measurements for Figure 2, Figure 4, and Figure 5, Figure 6
were made using the standard buck-boost evaluation board from AN-1985 (SNVA403).
Figure 2. Buck-Boost Efficiency vs Input Voltage
Figure 1. Boost Efficiency vs Input Voltage
VO = 20 V (6 LEDs)
VO = 32 V (9 LEDs)
Figure 3. Boost LED Current vs Input Voltage
Figure 4. Buck-boost LED Current vs Input Voltage
VO = 32 V (9 LEDs)
VO = 20 V (6 LEDs)
Figure 5. Analog Dimming
Figure 6. PWM Dimming
VO = 20 V (6 LEDs)
VO = 20V (6 LEDs)
Copyright © 2009–2015, Texas Instruments Incorporated
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Product Folder Links: LM3429 LM3429-Q1


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