Datasheet Linear Technology LT3486

Manufacturer	Linear Technology
Series	LT3486

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

	LT3486EDHC#PBF	LT3486EDHC#TRPBF	LT3486EFE#PBF	LT3486EFE#TRPBF	LT3486IFE#PBF	LT3486IFE#TRPBF
N	1	2	3	4	5	6
Package	5x3 DFN-16 Package Outline Drawing	5x3 DFN-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing	TSSOP-16 Package Outline Drawing
Package Code	DHC	DHC	FE	FE	FE	FE
Package Index	05-08-1706	05-08-1706	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1663 (BC)
Pin Count	16	16	16	16	16	16

Parametrics

Parameters / Models	LT3486EDHC#PBF	LT3486EDHC#TRPBF	LT3486EFE#PBF	LT3486EFE#TRPBF	LT3486IFE#PBF	LT3486IFE#TRPBF
Architecture	Average Output Current Control	Average Output Current Control	Average Output Current Control	Average Output Current Control	Average Output Current Control	Average Output Current Control
Demo Boards	DC876A	DC876A	DC876A	DC876A	DC876A	DC876A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Dimming	1000:1 PWM & 10:1 Analog	1000:1 PWM & 10:1 Analog	1000:1 PWM & 10:1 Analog	1000:1 PWM & 10:1 Analog	1000:1 PWM & 10:1 Analog	1000:1 PWM & 10:1 Analog
Export Control	no	no	no	no	no	no
Features	Resistor Set Frequency, Open LED Protection	Resistor Set Frequency, Open LED Protection	Resistor Set Frequency, Open LED Protection	Resistor Set Frequency, Open LED Protection	Resistor Set Frequency, Open LED Protection	Resistor Set Frequency, Open LED Protection
Frequency, kHz	1000	1000	1000	1000	1000	1000
Ishutdown, µA	0.1	0.1	0.1	0.1	0.1	0.1
Isupply, mA	9	9	9	9	9	9
Max Number of LEDs	2 x 10	2 x 10	2 x 10	2 x 10	2 x 10	2 x 10
Monolithic	yes	yes	yes	yes	yes	yes
Number of Outputs	2	2	2	2	2	2
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85
Switch Current, A	1.3	1.3	1.3	1.3	1.3	1.3
Synchronous	no	no	no	no	no	no
Topology	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver
Vin Max, V	24	24	24	24	24	24
Vin Min, V	2.4	2.4	2.4	2.4	2.4	2.4
Vout Max, V	35.4	35.4	35.4	35.4	35.4	35.4

Eco Plan

	LT3486EDHC#PBF	LT3486EDHC#TRPBF	LT3486EFE#PBF	LT3486EFE#TRPBF	LT3486IFE#PBF	LT3486IFE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	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
Extract from the document
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

EMS supplier

Slices

Microcontrollers