Datasheet Linear Technology LTC3490ES8#TRPBF — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3490
Numero de parte	LTC3490ES8#TRPBF

Controlador LED de celda única de 350 mA

Hojas de datos

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

Extracto del documento

Precios

Embalaje

Package	SO-8
Package Code	S8
Package Index	05-08-1610 (S8)

Paramétricos

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

Plan ecológico

RoHS

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

Otros nombres:

LTC3490ES8TRPBF, LTC3490ES8 TRPBF

Contactos