Datasheet Texas Instruments LM3431-Q1 — Ficha de datos

Fabricante	Texas Instruments
Serie	LM3431-Q1

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

	LM3431AQMH/NOPB	LM3431AQMHX/NOPB	LM3431QMH/NOPB	LM3431QMHX/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	Sí	No	Sí	No

	LM3431AQMH/NOPB	LM3431AQMHX/NOPB	LM3431QMH/NOPB	LM3431QMHX/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	LM3431	AQMH	QMH	QMH
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	LM3431AQMH/NOPB	LM3431AQMHX/NOPB	LM3431QMH/NOPB	LM3431QMHX/NOPB
Applications	Backlight,Stop/Tail,Turn	Backlight,Stop/Tail,Turn	Backlight,Stop/Tail,Turn	Backlight,Stop/Tail,Turn
Number of Channels	3	3	3	3
Iout(Max), A	0.6	0.6	0.6	0.6
Iq(Typ), mA	4	4	4	4
LED Current Per Channel, mA	200	200	200	200
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)
Rating	Automotive	Automotive	Automotive	Automotive
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 with Current Sink	Boost with Current Sink	Boost with Current Sink	Boost with Current Sink
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

	LM3431AQMH/NOPB	LM3431AQMHX/NOPB	LM3431QMH/NOPB	LM3431QMHX/NOPB
RoHS	Obediente	Obediente	Obediente	Obediente

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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-Q1 (4)