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LT3496IFE#TRPBF

Description
LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin TSSOP EP T/R
File Size313KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LT3496IFE#TRPBF Overview

LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin TSSOP EP T/R

LT3496IFE#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Number of Segments21
Minimum Operating Supply Voltage (V)3
Maximum Operating Supply Voltage (V)30
Typical Operating Supply Voltage (V)12|15|18|24|3.3|9|5
Maximum Supply Current (uA)14000
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
PackagingTape and Reel
Standard Package NameSOP
Pin Count28
Supplier PackageTSSOP EP
MountingSurface Mount
Package Height1.05(Max)
Package Length9.8(Max)
Package Width4.5(Max)
PCB changed28
Lead ShapeGull-wing
LT3496
Triple Output LED Driver
Features
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Description
The LT
®
3496 is a triple output DC/DC converter designed
to operate as a constant-current source and is ideal for
driving LEDs. The LT3496 works in buck, boost or buck-
boost mode. The LT3496 uses a fixed frequency, current
mode architecture resulting in stable operation over a
wide range of supply and output voltages. A frequency
adjust pin allows the user to program switching frequency
between 330kHz and 2.1MHz to optimize efficiency and
external component size.
The LT3496 supports 3000:1 dimming control on each
channel. Each of the three regulators is independently
operated by that channel’s PWM signal. The PWM feature
allows precise adjustment of the color mixing or dimming
ratio of the LED source. Each of the three channels has
a built-in gate driver to drive an external LED-disconnect
P-channel MOSFET, allowing high dimming range. The
output current range of each channel of the LT3496 is
programmed with an external sense resistor.
The CTRL pins are used to adjust the LED currents either
for analog dimming or overtemperature protection.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT and True Color PWM are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents, including
7199560, 7321203, and others pending.
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True Color PWM™ Dimming Delivers Up to 3000:1
Dimming Ratio
Built-In Gate Driver for PMOS LED Disconnect
Three Independent Driver Channels with 750mA,
45V Internal Switches
Operates in Buck, Boost, Buck-Boost Modes
CTRL Pin Accurately Sets LED Current Sense
Threshold Over a Range of 10mV to 100mV
Adjustable Frequency: 330kHz to 2.1MHz
Open LED Protection
Wide V
IN
Supply Range:
Operation from 3V to 30V
Transient Protection to 40V
Surface Mount Components
28-Lead (4mm
×
5mm) QFN and TSSOP Packages
applications
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RGB Lighting
Billboards and Large Displays
Automotive and Avionic Lighting
Constant-Current Sources
typical application
High Dimming Ratio Triple Output LED Power Supply
PV
IN
42V
CAP1
200m
LED1
TG1
TG2
CAP2
200m
LED2
CAP3
200m
LED3
TG3
PWM
5V/DIV
1µF
3
3000:1 PWM Dimming at 120Hz
7 LEDs
0.5A
0.5A
0.5A
I
L
0.5A/DIV
I
LED
0.5A/DIV
0.5µs/DIV
3496 TA01b
18µH
0.47µF 0.47µF
18µH
18µH
0.47µF
SW1
CAP1, CAP2, CAP3
LED1, LED2, LED3
V
IN
PWM1, PWM2, PWM3
SHDN
SW2
LT3496
GND
V
IN
3V TO 24V
1µF
PWM1, PWM2, PWM3
SHDN
TG1, TG2, TG3
VC1, VC2, VC3
V
REF
CTRL1, CTRL2, CTRL3
f
ADJ
OVP1, OVP2, OVP3
SW3
22k
470pF
3496 TA01a
3496ff


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Description LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin TSSOP EP T/R LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin TSSOP EP Tube LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin TSSOP EP T/R LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin QFN EP Tube LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin QFN EP T/R LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin QFN EP Tube LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin QFN EP T/R LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin TSSOP EP Tube LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin QFN EP Tube LED Driver 21 Segment 14000uA Supply Current Automotive 28-Pin QFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active Active Active Active Active Active Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
Number of Segments 21 21 21 21 21 21 21 21 21 21
Minimum Operating Supply Voltage (V) 3 3 3 3 3 3 3 3 3 3
Maximum Operating Supply Voltage (V) 30 30 30 30 30 30 30 30 30 30
Typical Operating Supply Voltage (V) 12|15|18|24|3.3|9|5 3.3|5|9|12|15|18|24 12|15|18|24|5|9|3.3 3.3|5|9|12|15|18|24 24|18|15|12|9|5|3.3 24|18|15|12|9|5|3.3 5|3.3|24|18|15|12|9 3.3|5|9|12|15|18|24 24|18|15|12|9|5|3.3 3.3|5|9|12|15|18|24
Maximum Supply Current (uA) 14000 14000 14000 14000 14000 14000 14000 14000 14000 14000
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 125 125 125 125 125 150 150 125 125 125
Packaging Tape and Reel Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel Tube Tube Tape and Reel
Standard Package Name SOP SOP SOP QFN QFN QFN QFN SOP QFN QFN
Pin Count 28 28 28 28 28 28 28 28 28 28
Supplier Package TSSOP EP TSSOP EP TSSOP EP QFN EP QFN EP QFN EP QFN EP TSSOP EP QFN EP QFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 1.05(Max) 1.05(Max) 1.05(Max) 0.75(Max) 0.75(Max) 0.75(Max) 0.75(Max) 1.05(Max) 0.75(Max) 0.75(Max)
Package Length 9.8(Max) 9.8(Max) 9.8(Max) 5 5 5 5 9.8(Max) 5 5
Package Width 4.5(Max) 4.5(Max) 4.5(Max) 4 4 4 4 4.5(Max) 4 4
PCB changed 28 28 28 28 28 28 28 28 28 28
Lead Shape Gull-wing Gull-wing Gull-wing No Lead No Lead No Lead No Lead Gull-wing No Lead No Lead
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