Datasheet Texas Instruments LM3431AMHX/NOPB — Ficha de datos

Controlador LED de corriente constante de 3 canales con controlador Boost integrado 28-HTSSOP -40 a 125

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PDF, 1.9 Mb, Revisión: G, Archivo publicado: mayo 2, 2013

Extracto del documento

Estado del ciclo de vida	Activo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante	No

Dimming Method	Analog,PWM
Input Voltage	DC/DC Type
Iout(Max)	0.6 A
Iq(Typ)	4 mA
Operating Temperature Range	-40 to 125 C
Package Group	HTSSOP
Package Size: mm2:W x L	28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP) PKG
Power Factor Correction	N/A Min
Rating	Catalog
Regulated Outputs	3
Special Features	Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown
Switching Frequency(Max)	1000 kHz
Switching Frequency(Min)	200 kHz
Topology	Boost,Boost with Current Sink,Multi-Channel
Type	Controller,Inductive
Vin(Max)	36 V
Vin(Min)	4.5 V
Vout(Max)	40 V
Vout(Min)	5.5 V
Vref	2.5 V

RoHS

Obediente

Evaluation Modules & Boards: LM3431EVAL
Evaluation Board for the 3-Channel Constant Current LED Driver with Integrated Boost Controller
Estado del ciclo de vida: Activo (Recomendado para nuevos diseños)
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AN-1656 Design Challenges of Switching LED Drivers (Rev. A)
PDF, 171 Kb, Revisión: A, Archivo publicado: mayo 3, 2013
Using a switching regulator as an LED driver requires the designer to convert a voltage regulator into acurrent regulator. Beyond the challenge of changing the feedback system to control current, the LEDsthemselves present a load characteristic that is much different than the digital devices and other loads thatrequire constant voltage. The LED WEBENCHВ® online design environment predicts and

Serie: LM3431 (4)

Semiconductors > Power Management > LED Driver > Illumination & General Lighting LED Driver