Datasheet Texas Instruments LM3431-Q1 — 数据表

制造商	Texas Instruments
系列	LM3431-Q1

具有集成升压控制器的3通道恒流LED驱动器

数据表

PDF, 1.9 Mb, 修订版: G, 档案已发布: May 2, 2013

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	LM3431AQMH/NOPB	LM3431AQMHX/NOPB	LM3431QMH/NOPB	LM3431QMHX/NOPB
Lifecycle Status	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)
Manufacture's Sample Availability	Yes	No	Yes	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	下载	下载	下载	下载

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	Compliant	Compliant	Compliant	Compliant

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AN-1656 Design Challenges of Switching LED Drivers (Rev. A)
PDF, 171 Kb, 修订版: A, 档案已发布: May 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

系列: LM3431-Q1 (4)