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LM3533 Folha de dados(PDF) 51 Page - Texas Instruments

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Nome de Peças LM3533
Descrição Electrónicos  Complete Lighting Power Solution for Smartphone Handsets
PDF  63 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LM3533 Folha de dados(HTML) 51 Page - Texas Instruments

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0.0
12.0
24.0
36.0
48.0
60.0
ILED (mA)
90.0
87.0
84.0
81.0
78.0
75.0
72.0
69.0
66.0
63.0
60.0
0
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24
36
48
60
ILED (mA)
90.0
88.0
86.0
84.0
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78.0
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72.0
70.0
0.0
12.0
24.0
36.0
48.0
60.0
ILED (mA)
90.0
87.0
84.0
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78.0
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LM3533
www.ti.com
SNOSC68C – APRIL 2012 – REVISED SEPTEMBER 2015
VIN = 3.6 V, LEDs are WLEDs part number SML-312WBCW(A), typical application circuit with L = TDK (VLF302512, 4.7 µH,
10 µH, 22 µH where specified), Schottky = On-Semi (NSR0240V2T1G), TA = 25°C, unless otherwise specified. Efficiency is
given as VOUT × (IHVLED1 + IHVLED2)/(VIN × IIN); matching curves are given as (ΔILED_MAX/ILED_AVE).
L = 10 µH
VIN = 3.6 V
ƒSW = 1 MHz
L = 10 µH
VIN = 3.6 V
ƒSW = 500 kHz
Top To Bottom: 2×4, 2×5, 2×6, 2×7, 2×8, 2×9, 2×10 (LEDs)
Top To Bottom: 2×4, 2×5, 2×6, 2×7, 2×8, 2×9, 2×10 (LEDs)
Figure 51. Efficiency vs ILED
Figure 50. Efficiency vs ILED
L = 4.7 µH
VIN = 3.6 V
ƒSW = 1 MHz
Top To Bottom: 2×4, 2×5, 2×6, 2×7, 2×8, 2×9, 2×10 (LEDs)
Figure 52. Efficiency vs ILED
9 Power Supply Recommendations
The LM3532 is designed to operate from an input supply range of 2.7 V to 5.5 V. This input supply must be well-
regulated and provide the peak current required by the LED configuration and inductor selected.
Copyright © 2012–2015, Texas Instruments Incorporated
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