Moteur de recherche de fiches techniques de composants électroniques
  French  ▼

Delete All
ON OFF
ALLDATASHEET.FR

X  

Preview PDF Download HTML

LT3466 Fiches technique(PDF) 13 Page - Linear Technology

No de pièce LT3466
Description  Dual Full Function White LED Step-Up Converter with Built-In Schottky Diodes
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LT3466 Fiches technique(HTML) 13 Page - Linear Technology

Back Button LT3466 Datasheet HTML 9Page - Linear Technology LT3466 Datasheet HTML 10Page - Linear Technology LT3466 Datasheet HTML 11Page - Linear Technology LT3466 Datasheet HTML 12Page - Linear Technology LT3466 Datasheet HTML 13Page - Linear Technology LT3466 Datasheet HTML 14Page - Linear Technology LT3466 Datasheet HTML 15Page - Linear Technology LT3466 Datasheet HTML 16Page - Linear Technology LT3466 Datasheet HTML 17Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 13 / 20 page
background image
13
LT3466
3466f
APPLICATIO S I FOR ATIO
Figure 9 shows four LEDs being run off two AA cells. The
battery is connected to the inductors and the chip is
powered off 3.3V logic supply voltage.
CTRL1
CTRL2
RT
SW1
SW2
VIN
LT3466
VOUT1
63.4k
1%
3466 F09
FB1
10
VOUT2
FB2
L1
15
µH
2 AA CELLS
1.8V to 3V
1
µF
L2
15
µH
0.1
µF
3.3V
1
µF
1
µF
10
Figure 9. 2 AA Cells to Four White LEDs
1
2
3
4
5
10
9
8
7
6
COUT1
RFB1
RT
CTRL1
CTRL2
3466 F10
RFB2
COUT2
CIN
VIN
GND
GND
L1
L2
11
Figure 10. Recommended Component Placement
HIGH INPUT VOLTAGE APPLICATIONS
The input voltage to LT3466 can be as high as 24V. This
gives it the flexibility of driving a large number of LEDs
when being run off a higher voltage. The maximum num-
ber of LEDs that can be driven is constrained by the
converter output voltages being clamped at 42V.
The LT3466 can be used to power 20 White LEDs (10 per
converter) at 20mA when running off two Li-Ion cells in
series.
BOARD LAYOUT CONSIDERATION
As with all switching regulators, careful attention must be
paid to the PCB board layout and component placement.
To prevent electromagnetic interference (EMI) problems,
proper layout of high frequency switching paths is essen-
tial. Minimize the length and area of all traces connected to
the switching node pins (SW1 and SW2). Keep the feed-
back pins (FB1 and FB2) away from the switching nodes.
The DFN package has an exposed paddle that must be
connected to the system ground. The ground connection
for the feedback resistors should be tied directly to the
ground plane and not shared with any other component,
except the RT resistor, ensuring a clean, noise-free con-
nection. Recommended component placement is shown
in the Figure 10.


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20 


Fiches technique Télécharger

Go To PDF Page

Numéro de composants électroniques

No de pièceDescriptionHtml ViewFabricant
LT3465AES6 1.2MHz/2.4MHz White LED Step-Up Converters with Built-In Schottky in ThinSOT 1  2  3  4  5  More Linear Technology
AIC1648 Built-in OVP White LED Step-Up Converter 1  2  3  4  5  More Analog Intergrations Corporation
LM2793 Low Noise White LED Constant Current Supply with Dual Function Brightness Control 1  2  3  4  5  More National Semiconductor (TI)
LT3486 Dual 1.3A White LED Step-Up Converters with Wide Dimming 1  2  3  4  5  More Linear Technology
MAX1582 High-Efficiency 26V Step-Up Converter for White LED Main and Subdisplay Backlighting 1  2  3  4  5  More Maxim Integrated Products
AIC1647 WHITE LED STEP-UP CONVERTER IN SOT23 1  2  3  4  5  More Analog Intergrations Corporation
ISL97631 White LED Boost Regulator With Integrated Schottky Diode 1  2  3  4  5  More Intersil Corporation
NCP1417 200 mA DC-DC Step-up Converter with Dual Low Battery Protection 1  2  3  4  5  More ON Semiconductor
MX841 White LED Step-Up Converter 1  2  3  4  5  More IXYS Corporation
G5121 Fixed Frequency White LED Step-Up Converter 1  2  3  4  5  More Global Mixed-mode Technology Inc

Lien URL




Politique de confidentialité
ALLDATASHEET.FR
ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn