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LT3466EDD-1

Description
LED Driver 10 Segment 7500uA Supply Current Automotive 10-Pin DFN EP
File Size376KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LT3466EDD-1 Overview

LED Driver 10 Segment 7500uA Supply Current Automotive 10-Pin DFN EP

LT3466EDD-1 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
Number of Segments10
Minimum Operating Supply Voltage (V)2.7
Maximum Operating Supply Voltage (V)22
Typical Operating Supply Voltage (V)3.3|5|9|12|15|18
Maximum Supply Current (uA)7500
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
Standard Package NameDFN
Pin Count10
Supplier PackageDFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length3
Package Width3
PCB changed10
Lead ShapeNo Lead
LT3466-1
White LED Driver and Boost
Converter in 3mm
×
3mm
DFN Package
FEATURES
DESCRIPTIO
Drives Up to 10 White LEDs from a 3.6V Supply
Two Independent Step-Up DC/DC Converters
Independent Dimming and Shutdown Control
of the Outputs
±1.5%
Output Voltage Accuracy (Boost Converter)
±4%
LED Current Programming Accuracy
Internal Schottky Diodes
Internal Soft-Start Eliminates Inrush Current
Output Overvoltage Protection (39.5V Max V
OUT
)
Fixed Frequency Operation Up to 2MHz
83% Efficiency Driving 8 White LEDs at 15mA
from a 3.6V Supply
Wide Input Voltage Range: 2.7V to 24V
Tiny (3mm
×
3mm) 10-Lead DFN Package
LT
®
3466-1 is a dual switching regulator that combines a
white LED driver and a boost converter in a low profile,
small footprint (3mm
×
3mm
×
0.75mm) DFN package.
The LED driver can be configured to drive up to 10 White
LEDs in series and the boost converter can be used for
generating the LCD bias voltages or driving a secondary
OLED display. Series connection of the LEDs provides
identical LED currents resulting in uniform brightness and
eliminating the need for ballast resistors and expensive
factory calibration.
The LT3466-1 provides independent dimming and shut-
down control of the two converters. The operating fre-
quency can be set with an external resistor over a 200kHz
to 2MHz range. The white LED driver features a low 200mV
reference, thereby minimizing power loss in the current
setting resistor for better efficiency. The boost converter
achieves
±1.5%
output voltage accuracy by the use of a
precision 0.8V reference. Protection features include out-
put overvoltage protection and internal soft-start. Wide
input supply range allows operation from 2.7V to 24V.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
White LED and OLED Displays
Digital Cameras, Sub-Notebook PCs
PDAs, Handheld Computers
TFT - LCD Bias Supply
Automotive
TYPICAL APPLICATIO
33µH
3V TO 5V
33µH
1µF
90
85
SW1
V
IN
SW2
80
EFFICIENCY (%)
75
70
65
60
55
6 LEDs
1µF
V
OUT1
LT3466-1
V
OUT2
1µF
16V
30mA
475k
FB1
CTRL1
10Ω
SHUTDOWN
AND DIMMING
CONTROL 1
63.4k
R
T
GND
FB2
CTRL2
SHUTDOWN
AND DIMMING
CONTROL 2
24.9k
34661 F01a
50
Figure 1. Li-Ion Powered Driver for 6 White LEDs and OLED Display
34661f
U
Conversion Efficiency
V
IN
= 3.6V
LED DRIVER
BOOST CONVERTER
0
5
10
15
20
25
30
OUTPUT CURRENT (mA)
34661 F01b
U
U
1

LT3466EDD-1 Related Products

LT3466EDD-1 LT3466EDD-1#PBF LT3466EDD-1#TRPBF
Description LED Driver 10 Segment 7500uA Supply Current Automotive 10-Pin DFN EP LED Driver 10 Segment 7500uA Supply Current Automotive 10-Pin DFN EP Tube LED Driver 10 Segment 7500uA Supply Current Automotive 10-Pin DFN EP T/R
EU restricts the use of certain hazardous substances Not Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99
Part Status Unconfirmed Active Active
Number of Segments 10 10 10
Minimum Operating Supply Voltage (V) 2.7 2.7 2.7
Maximum Operating Supply Voltage (V) 22 22 22
Typical Operating Supply Voltage (V) 3.3|5|9|12|15|18 5|9|3.3|18|15|12 18|3.3|5|9|12|15
Maximum Supply Current (uA) 7500 7500 7500
Minimum Operating Temperature (°C) -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85
Supplier Temperature Grade Extended Extended Extended
Standard Package Name DFN DFN DFN
Pin Count 10 10 10
Supplier Package DFN EP DFN EP DFN EP
Mounting Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 0.75(Max) 0.75(Max)
Package Length 3 3 3
Package Width 3 3 3
PCB changed 10 10 10
Lead Shape No Lead No Lead No Lead
HTS 8542.39.00.01 8542.39.00.01 -
Packaging - Tube Tape and Reel
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