Datasheet Linear Technology LTC3783 — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3783

Controlador LED PWM y convertidor Boost, Flyback y SEPIC

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PDF, 311 Kb, Idioma: en, Archivo subido: sept 23, 2017, Páginas: 24
PWM LED Driver and Boost, Flyback and SEPIC Controller

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Precios

Embalaje

	LTC3783EDHD#PBF	LTC3783EDHD#TRPBF	LTC3783EFE#PBF	LTC3783EFE#TRPBF	LTC3783IDHD#PBF	LTC3783IDHD#TRPBF	LTC3783IFE#PBF	LTC3783IFE#TRPBF
N	1	2	3	4	5	6	7	8
Package	5x4 DFN-16 Dibujo del esquema del paquete	5x4 DFN-16 Dibujo del esquema del paquete	TSSOP-16 Dibujo del esquema del paquete	TSSOP-16 Dibujo del esquema del paquete	5x4 DFN-16 Dibujo del esquema del paquete	5x4 DFN-16 Dibujo del esquema del paquete	TSSOP-16 Dibujo del esquema del paquete	TSSOP-16 Dibujo del esquema del paquete
Package Code	DHD	DHD	FE	FE	DHD	DHD	FE	FE
Package Index	05-08-1707	05-08-1707	05-08-1663 (BC)	05-08-1663 (BC)	05-08-1707	05-08-1707	05-08-1663 (BC)	05-08-1663 (BC)
Pin Count	16	16	16	16	16	16	16	16

Paramétricos

Parameters / Models	LTC3783EDHD#PBF	LTC3783EDHD#TRPBF	LTC3783EFE#PBF	LTC3783EFE#TRPBF	LTC3783IDHD#PBF	LTC3783IDHD#TRPBF	LTC3783IFE#PBF	LTC3783IFE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC850A	DC850A	DC850A	DC850A	DC850A	DC850A	DC850A	DC850A
Design Tools	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
Export Control	no	no	no	no	no	no	no	no
Features	Resistor Set Frequency, External Synchronization	Resistor Set Frequency, External Synchronization	Resistor Set Frequency, External Synchronization	Resistor Set Frequency, External Synchronization	Resistor Set Frequency, External Synchronization	Resistor Set Frequency, External Synchronization	Resistor Set Frequency, External Synchronization	Resistor Set Frequency, External Synchronization
Frequency, kHz	1000	1000	1000	1000	1000	1000	1000	1000
Ishutdown, µA	20	20	20	20	20	20	20	20
Isupply, mA	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5
Max Number of LEDs	25+	25+	25+	25+	25+	25+	25+	25+
Monolithic	no	no	no	no	no	no	no	no
Number of Outputs	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Switch Current, A	25	25	25	25	25	25	25	25
Synchronous	no	no	no	no	no	no	no	no
Topology	Boost, Sepic, Flyback, LED Driver	Boost, Sepic, Flyback, LED Driver	Boost, Sepic, Flyback, LED Driver	Boost, Sepic, Flyback, LED Driver	Boost, Sepic, Flyback, LED Driver	Boost, Sepic, Flyback, LED Driver	Boost, Sepic, Flyback, LED Driver	Boost, Sepic, Flyback, LED Driver
Vin Max, V	36	36	36	36	36	36	36	36
Vin Min, V	3	3	3	3	3	3	3	3
Vout Max, V	100	100	100	100	100	100	100	100

Plan ecológico

	LTC3783EDHD#PBF	LTC3783EDHD#TRPBF	LTC3783EFE#PBF	LTC3783EFE#TRPBF	LTC3783IDHD#PBF	LTC3783IDHD#TRPBF	LTC3783IFE#PBF	LTC3783IFE#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente

Notas de Diseño

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Versatile High Power LED Driver Controller Simplifies Design &mdash DN406
PDF, 83 Kb, Archivo publicado: enero 8, 2007
Extracto del documento
advertisement Versatile High Power LED Driver Controller Simplifies Design
Design Note 406
Ryan Huff
Introduction
The increased popularity of high power LEDs over the
last several years has challenged electronic engineers
to come up with accurate and efп¬Ѓcient, yet simple drive
solutions. The task is more difп¬Ѓcult as the market for
LEDs enters the realm of high-powered lights, such as
those for automobile headlights or large LCD backlights.
High light-output solutions usually involve large arrays of
individual LEDs stacked in series. Conventionally, driving
high power strings with accurate current is at odds with
simplicity and efп¬ЃciencyвЂ”typically involving an inefп¬Ѓcient linear regulator scheme or a more complicated,
multiple IC switching regulator conп¬Ѓguration. There is a
simpler and better way via a low parts count, single IC
solution for driving high power LED strings. At the heart
of this highly efп¬Ѓcient, simple and accurate solution is
the LTC3783 controller IC.
Fully Integrated, High Power LED Driver Controller
The LTC3783 has all of the functions that are normally
required to run an LED string: an accurate current regulation error ampliп¬Ѓer, a switch mode power supply (SMPS)
controller with FET drivers, and two different ways to …

Artículos

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High Voltage Boost/LED Controller Provides 3000:1 PWM Dimming Ratio &mdash LT Journal
PDF, 189 Kb, Archivo publicado: marzo 28, 2006
Extracto del documento
DESIGN FEATURES L High Voltage Boost/LED Controller
Provides 3000:1 PWM Dimming Ratio
by Eugene Cheung
Performance, Accuracy,
Versatility: LEDs and Beyond The LTC3783 is a current-mode boost
controller optimized for constantcurrent True Color PWMв„ў dimming
of high-powered LEDs. Proprietary
techniques provide extremely fast,
true PWM load switching with no
transient undervoltage or overvoltage
issues. High dimming ratios of 3000:1
(at 100Hz), important for such applications as video projectors and LCD
backlights, can be achieved digitally,
maintaining the color integrity of
white and RGB LEDs. The LTC3783
also provides an analog input for an
additional 100:1 dimming (300,000:1
total).
This versatile part can also be used
in a boost, buck, buck-boost, SEPIC, or
п¬‚yback converter, and as a constantcurrent, constant-voltage regulator. No
RSENSEв„ў operation uses a MOSFETвЂ™s
on-resistance to eliminate the currentsense resistor, increasing efп¬Ѓciency. …

Linea modelo

Serie: LTC3783 (8)

LTC3783EDHD#PBF LTC3783EDHD#TRPBF LTC3783EFE#PBF LTC3783EFE#TRPBF LTC3783IDHD#PBF LTC3783IDHD#TRPBF LTC3783IFE#PBF LTC3783IFE#TRPBF

Clasificación del fabricante

Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers | Multitopology LED Driver
Power Management > Switching Regulator > SEPIC Regulators | Flyback, Forward and Isolated Controllers
Power Management > Switching Regulator > Step-Up (Boost) Regulators > External Power Switch Boost