Datasheet Linear Technology LT3496 — Ficha de datos

Fabricante	Linear Technology
Serie	LT3496

Controlador LED de triple salida

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PDF, 346 Kb, Idioma: en, Archivo subido: oct 4, 2017, Páginas: 20
Triple Output LED Driver

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Embalaje

	LT3496EFE#PBF	LT3496EFE#TRPBF	LT3496EUFD#PBF	LT3496EUFD#TRPBF	LT3496HUFD#PBF	LT3496HUFD#TRPBF	LT3496IFE#PBF	LT3496IFE#TRPBF	LT3496IUFD#PBF	LT3496IUFD#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	TSSOP-28 Dibujo del esquema del paquete	TSSOP-28 Dibujo del esquema del paquete	4x5 QFN-28 Dibujo del esquema del paquete	4x5 QFN-28 Dibujo del esquema del paquete	4x5 QFN-28 Dibujo del esquema del paquete	4x5 QFN-28 Dibujo del esquema del paquete	TSSOP-28 Dibujo del esquema del paquete	TSSOP-28 Dibujo del esquema del paquete	4x5 QFN-28 Dibujo del esquema del paquete	4x5 QFN-28 Dibujo del esquema del paquete
Package Code	FE	FE	UFD	UFD	UFD	UFD	FE	FE	UFD	UFD
Package Index	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1712	05-08-1712	05-08-1712	05-08-1712	05-08-1663 (EB)	05-08-1663 (EB)	05-08-1712	05-08-1712
Pin Count	28	28	28	28	28	28	28	28	28	28

Paramétricos

Parameters / Models	LT3496EFE#PBF	LT3496EFE#TRPBF	LT3496EUFD#PBF	LT3496EUFD#TRPBF	LT3496HUFD#PBF	LT3496HUFD#TRPBF	LT3496IFE#PBF	LT3496IFE#TRPBF	LT3496IUFD#PBF	LT3496IUFD#TRPBF
Architecture	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control	Improved Average Output Current Control
Demo Boards	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A	DC1288A,DC986A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Dimming	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog	3000:1 PWM, 10:1 Analog
Export Control	no	no	no	no	no	no	no	no	no	no
Features	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency	True Color PWM Dimming, Open LED Protection, Resistor Set Frequency
Frequency, kHz	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100
Ishutdown, µA	.1	.1	.1	.1	.1	.1	.1	.1	.1	.1
Isupply, mA	6	6	6	6	6	6	6	6	6	6
Max Number of LEDs	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10	3 x 10
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	3	3	3	3	3	3	3	3	3	3
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7
Switch Current, A	1	1	1	1	1	1	1	1	1	1
Synchronous	no	no	no	no	no	no	no	no	no	no
Topology	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver	Boost, Buck, Buck-Boost, LED Driver
Vin Max, V	30	30	30	30	30	30	30	30	30	30
Vin Min, V	3	3	3	3	3	3	3	3	3	3
Vout Max, V	45	45	45	45	45	45	45	45	45	45

Plan ecológico

	LT3496EFE#PBF	LT3496EFE#TRPBF	LT3496EUFD#PBF	LT3496EUFD#TRPBF	LT3496HUFD#PBF	LT3496HUFD#TRPBF	LT3496IFE#PBF	LT3496IFE#TRPBF	LT3496IUFD#PBF	LT3496IUFD#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente

Notas de Diseño

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Triple LED Driver in 4mm Г— 5mm QFN Supports LCD Backlights in Buck, Boost or Buck-Boost Modes and Delivers 3000:1 PWM Dimming Ratio &mdash DN449
PDF, 111 Kb, Archivo publicado: agosto 21, 2008
Extracto del documento
Triple LED Driver in 4mm Г— 5mm QFN Supports LCD
Backlights in Buck, Boost or Buck-Boost Modes and
Delivers 3000:1 PWM Dimming Ratio
Design Note 449
Hua (Walker) Bai
Introduction
By integrating three independent LED drivers, the LTВ®3496
offers a highly efп¬Ѓcient, compact and cost-effective
solution to drive multiple LED strings. All three drivers
have independent on/off and PWM dimming control, and
can drive different numbers or types of LEDs. High side
current sensing and built-in gate drivers for PMOS LED
disconnect allow the LT3496 to operate in buck, boost,
SEPIC or buck-boost modes with up to 3000:1 True Color
PWMв„ў dimming ratio.
The LT3496 is offered in a single 4mm Г— 5mm QFN or
FE28 package. The efп¬Ѓciency of each driver can exceed
95%. Integrated PMOS Drivers Improve PWM Dimming
Ratio to 3000:1
A high PWM dimming ratio is critical in many display
applications, especially in high end LCD panels. Beware,
though, the deп¬Ѓnition of dimming ratio varies among
suppliers. When comparing dimming ratios, pay close …

Artículos

Descargar
Triple Output LED Driver Delivers 3000:1 Dimming Ratio in Buck, Boost or Buck-Boost Mode &mdash LT Journal
PDF, 529 Kb, Archivo publicado: jun 14, 2007
Extracto del documento
LвЂ‰DESIGN FEATURES Triple Output LED Driver Delivers
3000:1 Dimming Ratio in Buck,
by Bin Zhang
Boost or Buck-Boost Mode
Introduction
The LT3496 is a triple output DC/DC
converter designed for high performance, True Color PWMTM dimming
in multichannel LED lighting applications. By integrating three independent
driver channels, the LT3496 provides
a space-saving and cost-efficient solution to drive multiple LED strings.
FigureВ 1 shows a 50W LT3496 3-channel LED driver that occupies 350mm2
and with a sub-1.5mm profile.
SIMPLIFIED TRADITIONAL
LED DRIVER BOARD SIX WIRES L1
15ВµH
LED
DRIVER ratio in buck, boost, or buck-boost
configurations. The 45V capability of
the internal power switch, 3VвЂ“40V
input voltage range, and adjustable
frequency result in reliable operation
over a wide range of supply and output
voltages. Applications for the LT3496 …

Linea modelo

Serie: LT3496 (10)

LT3496EFE#PBF LT3496EFE#TRPBF LT3496EUFD#PBF LT3496EUFD#TRPBF LT3496HUFD#PBF LT3496HUFD#TRPBF LT3496IFE#PBF LT3496IFE#TRPBF LT3496IUFD#PBF LT3496IUFD#TRPBF

Clasificación del fabricante

Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers | Step-Down (Buck) LED Drivers | Buck-Boost LED Drivers | Multitopology LED Driver
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) LED Drivers