Datasheet Linear Technology LT3497

Manufacturer	Linear Technology
Series	LT3497

Dual Full Function White LED Driver with Integrated Schottky Diodes

Datasheets

PDF, 354 Kb, File uploaded: Oct 4, 2017

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Prices

Packaging

	LT3497EDDB#PBF	LT3497EDDB#TRMPBF	LT3497EDDB#TRPBF
N	1	2	3
Package	3x2 DFN-10 Package Outline Drawing	3x2 DFN-10 Package Outline Drawing	3x2 DFN-10 Package Outline Drawing
Package Code	DDB	DDB	DDB
Package Index	05-08-1722	05-08-1722	05-08-1722
Pin Count	10	10	10

Parametrics

Parameters / Models	LT3497EDDB#PBF	LT3497EDDB#TRMPBF	LT3497EDDB#TRPBF
Architecture	Average Output Current Control	Average Output Current Control	Average Output Current Control
Demo Boards	DC1019A	DC1019A	DC1019A
Design Tools	LTspice File	LTspice File	LTspice File
Dimming	PWM, Analog	PWM, Analog	PWM, Analog
Export Control	no	no	no
Features	Integrated Schottky Diode, High Side Current Sense, Open LED Protection, True Color PWM	Integrated Schottky Diode, High Side Current Sense, Open LED Protection, True Color PWM	Integrated Schottky Diode, High Side Current Sense, Open LED Protection, True Color PWM
Frequency, kHz	2300	2300	2300
Ishutdown, µA	12	12	12
Isupply, mA	6	6	6
Max Number of LEDs	2 x 6	2 x 6	2 x 6
Monolithic	yes	yes	yes
Number of Outputs	2	2	2
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85
Switch Current, A	0.4	0.4	0.4
Synchronous	no	no	no
Topology	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver
Vin Max, V	10	10	10
Vin Min, V	2.5	2.5	2.5
Vout Max, V	35	35	35

Eco Plan

	LT3497EDDB#PBF	LT3497EDDB#TRMPBF	LT3497EDDB#TRPBF
RoHS	Compliant	Compliant	Compliant

Articles

Download
Light Up 12 LEDs from a Single-Cell Li-Ion Battery via Highly Integrated 3mm x 2mm Dual-LED-String Driver &mdash LT Journal
PDF, 1.1 Mb, File published: Oct 16, 2007
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DESIGN FEATURESвЂ‰L Light Up 12 LEDs from a Single-Cell
Li-Ion Battery via Highly Integrated
3mm Г— 2mm Dual-LED-String Driver
by Ben Chan Introduction
The LT3497 is a dual step-up converter capable of driving up to 12
white LEDs from a single-cell Li-Ion
input. The device is capable of driving
asymmetric LED strings with independent dimming and shutdown control,
perfect for driving backlight circuits
in battery-powered portable devices,
such as cellular phones, MP3 players,
PDAs, digital cameras, and portable
GPS devices.
The LT3497 directly regulates
LED current, providing consistent
brightness for all LEDs regardless
of variations in their forward voltage
drop. Important features including
internal compensation, open-LED protection, DC/PWM dimming control, a
35V power switch and a 35V Schottky
diode are all integrated into the part,
making the LT3497 LED driver an
ideal solution for space-constrained …

Model Line

Series: LT3497 (3)

LT3497EDDB#PBF LT3497EDDB#TRMPBF LT3497EDDB#TRPBF

Manufacturer's Classification

Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers

EMS supplier

Slices

Microcontrollers