Datasheet Linear Technology LTC3490 — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3490

Controlador LED de celda única de 350 mA

Hojas de datos

PDF, 168 Kb, Revisión: A, Archivo subido: oct 4, 2017

Extracto del documento

Embalaje

	LTC3490EDD#PBF	LTC3490EDD#TRPBF	LTC3490ES8#PBF	LTC3490ES8#TRPBF
N	1	2	3	4
Package	3x3 DFN-8 Dibujo del esquema del paquete	3x3 DFN-8 Dibujo del esquema del paquete	SO-8 Dibujo del esquema del paquete	SO-8 Dibujo del esquema del paquete
Package Code	DD	DD	S8	S8
Package Index	05-08-1698	05-08-1698	05-08-1610 (S8)	05-08-1610 (S8)
Pin Count	8	8	8	8

Paramétricos

Parameters / Models	LTC3490EDD#PBF	LTC3490EDD#TRPBF	LTC3490ES8#PBF	LTC3490ES8#TRPBF
Architecture	Average Output Current Control	Average Output Current Control	Average Output Current Control	Average Output Current Control
Demo Boards	DC762A	DC762A	DC762A	DC762A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Dimming	PWM	PWM	PWM	PWM
Export Control	no	no	no	no
Frequency, kHz	1300	1300	1300	1300
Ishutdown, µA	20	20	20	20
Isupply, mA	20	20	20	20
Max Number of LEDs	2	2	2	2
Monolithic	yes	yes	yes	yes
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85
Switch Current, A	2	2	2	2
Synchronous	no	no	no	no
Topology	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver	Boost, LED Driver
Vin Max, V	3.2	3.2	3.2	3.2
Vin Min, V	1	1	1	1
Vout Max, V	4	4	4	4

Plan ecológico

	LTC3490EDD#PBF	LTC3490EDD#TRPBF	LTC3490ES8#PBF	LTC3490ES8#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente

Artículos

Descargar
Simple Converter Drives Luxeon White LEDs from Batteries &mdash LT Journal
PDF, 189 Kb, Archivo publicado: jun 10, 2005
Extracto del documento
DESIGN IDEAS Simple Converter Drives Luxeon
White LEDs from Batteries by Michael Nootbaar
Introduction current drive. Existing boost circuits
generally use voltage feedback switching converters with extra circuitry to The high output 1W white LEDs from
Luxeon and Nichia provide illumination levels close to 12W incandescent
levels while dissipating only 1W and
lasting for 50,000 hours or more. These
devices promise enormous power savings and reduced maintenance cost
for many lamp applications. However,
these LEDs must be driven with a
constant current to maintain proper
brightness. The forward voltage drop
varies between 2.8V and 4.0V over
process and temperature extremes.
The circuit used to drive the LED must
compensate for this forward voltage
variation while maintaining constant The LTC3490 provides a
simple solution for boosting
a single or dual cell battery
voltage to the necessary
LED forward voltage and
regulating the current
through the LED load. …

Linea modelo

Serie: LTC3490 (4)

LTC3490EDD#PBF LTC3490EDD#TRPBF LTC3490ES8#PBF LTC3490ES8#TRPBF

Clasificación del fabricante

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

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