Datasheet Linear Technology LT3486EDHC#PBF

Manufacturer	Linear Technology
Series	LT3486
Part Number	LT3486EDHC#PBF

Dual 1.3A White LED Step-Up Converters with Wide Dimming

Datasheets

PDF, 2.8 Mb, Revision: E, File uploaded: Oct 4, 2017

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Prices

Packaging

Package	5x3 DFN-16
Package Code	DHC
Package Index	05-08-1706

Parametrics

Architecture	Average Output Current Control
Demo Boards	DC876A
Design Tools	LTspice File
Dimming	1000:1 PWM & 10:1 Analog
Export Control	no
Features	Resistor Set Frequency, Open LED Protection
Frequency	1000 kHz
Ishutdown	0.1 µA
Isupply	9 mA
Max Number of LEDs	2 x 10
Monolithic	yes
Number of Outputs	2
Operating Temperature Range	0 to 85 °C
Switch Current	1.3 A
Synchronous	no
Topology	Boost, LED Driver
Vin Max	24 V
Vin Min	2.4 V
Vout Max	35.4 V

Eco Plan

RoHS

Compliant

Articles

Download
Dual Step-Up Converter Drives White LEDs with 1000:1 PWM Dimming &mdash LT Journal
PDF, 269 Kb, File published: Nov 21, 2006
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L DESIGN FEATURES Dual Step-Up Converter Drives White
LEDs with 1000:1 PWM Dimming
by Keith Szolusha Introduction
Notebook computers, large-screen
handheld PDAs, dashboard displays,
and automotive and avionic in-cabin
entertainment LCD panels are illuminated with strings of high power white
LEDs. White LEDs are the preferred
over other backlight technologies because they provide true white light at
a high enough intensity for daylight
viewing, and enough dimming capability for nighttime use. LEDs also offer
relatively long life spans and a lack
of hazardous materials. LED strings
lining the edges of these LCD panels provide uniform brightness when
driven with a constant current.
The maximum switch voltage of an
LED driver limits the number of LEDs
that it can drive in series. It may seem
that paralleling LEDs is a good way
to increase the capacity of a driver
IC, but parallel LEDs must be wellmatched in forward voltage; otherwise
un-matched LED strings cause uneven
currents and thus uneven brightness. …

Model Line

Series: LT3486 (6)

LT3486EDHC#PBF LT3486EDHC#TRPBF LT3486EFE#PBF LT3486EFE#TRPBF LT3486IFE#PBF LT3486IFE#TRPBF

Manufacturer's Classification

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

Other Names:

LT3486EDHCPBF, LT3486EDHC PBF

EMS supplier

Slices

Microcontrollers