Datasheet Texas Instruments LM3431 — Ficha de datos

Fabricante	Texas Instruments
Serie	LM3431

Controlador LED de corriente constante de 3 canales con controlador de refuerzo integrado

Hojas de datos

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

Extracto del documento

	LM3431AMH/NOPB	LM3431AMHX/NOPB	LM3431MH/NOPB	LM3431MHX/NOPB
Estado del ciclo de vida	Activo (Recomendado para nuevos diseños)	Activo (Recomendado para nuevos diseños)	Activo (Recomendado para nuevos diseños)	Activo (Recomendado para nuevos diseños)
Disponibilidad de muestra del fabricante	No	No	Sí	Sí

	LM3431AMH/NOPB	LM3431AMHX/NOPB	LM3431MH/NOPB	LM3431MHX/NOPB
N	1	2	3	4
Pin	28	28	28	28
Package Type	PWP	PWP	PWP	PWP
Industry STD Term	HTSSOP	HTSSOP	HTSSOP	HTSSOP
JEDEC Code	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G
Package QTY	48	2500	48	2500
Carrier	TUBE	LARGE T&R	TUBE	LARGE T&R
Device Marking	LM3431AMH	LM3431AMH	LM3431MH	LM3431MH
Width (mm)	4.4	4.4	4.4	4.4
Length (mm)	9.7	9.7	9.7	9.7
Thickness (mm)	1	1	1	1
Pitch (mm)	.65	.65	.65	.65
Max Height (mm)	1.2	1.2	1.2	1.2
Mechanical Data	Descargar	Descargar	Descargar	Descargar

Parameters / Models	LM3431AMH/NOPB	LM3431AMHX/NOPB	LM3431MH/NOPB	LM3431MHX/NOPB
Dimming Method	Analog,PWM	Analog,PWM	Analog,PWM	Analog,PWM
Input Voltage, Type	DC/DC	DC/DC	DC/DC	DC/DC
Iout(Max), A	0.6	0.6	0.6	0.6
Iq(Typ), mA	4	4	4	4
Operating Temperature Range, C	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Package Group	HTSSOP	HTSSOP	HTSSOP	HTSSOP
Package Size: mm2:W x L, PKG	28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP)	28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP)	28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP)	28HTSSOP: 62 mm2: 6.4 x 9.7(HTSSOP)
Power Factor Correction, Min	N/A	N/A	N/A	N/A
Rating	Catalog	Catalog	Catalog	Catalog
Regulated Outputs	3	3	3	3
Special Features	Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown	Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown	Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown	Adjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown
Switching Frequency(Max), kHz	1000	1000	1000	1000
Switching Frequency(Min), kHz	200	200	200	200
Topology	Boost,Boost with Current Sink,Multi-Channel	Boost,Boost with Current Sink,Multi-Channel	Boost,Boost with Current Sink,Multi-Channel	Boost,Boost with Current Sink,Multi-Channel
Type	Controller,Inductive	Controller,Inductive	Controller,Inductive	Controller,Inductive
Vin(Max), V	36	36	36	36
Vin(Min), V	4.5	4.5	4.5	4.5
Vout(Max), V	40	40	40	40
Vout(Min), V	5.5	5.5	5.5	5.5
Vref, V	2.5	2.5	2.5	2.5

	LM3431AMH/NOPB	LM3431AMHX/NOPB	LM3431MH/NOPB	LM3431MHX/NOPB
RoHS	Obediente	Obediente	Obediente	Obediente

Descargar
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)