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LM3533 Datasheet(PDF) 51 Page - Texas Instruments

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Part # LM3533
Description  Complete Lighting Power Solution for Smartphone Handsets
PDF  63 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3533 Datasheet(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
12
24
36
48
60
ILED (mA)
90.0
88.0
86.0
84.0
82.0
80.0
78.0
76.0
74.0
72.0
70.0
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
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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51
Product Folder Links: LM3533



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