Datasheet Texas Instruments LM3431

ManufacturerTexas Instruments
SeriesLM3431
Datasheet Texas Instruments LM3431

3-Channel Constant Current LED Driver with Integrated Boost Controller

Datasheets

LM3431/31A/31Q/31AQ 3-Chan Constant Current LED Driver w/Integrated Boost Cntr datasheet
PDF, 1.9 Mb, Revision: G, File published: May 2, 2013
Extract from the document

Prices

Status

LM3431AMH/NOPBLM3431AMHX/NOPBLM3431MH/NOPBLM3431MHX/NOPB
Lifecycle StatusActive (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)
Manufacture's Sample AvailabilityNoNoYesYes

Packaging

LM3431AMH/NOPBLM3431AMHX/NOPBLM3431MH/NOPBLM3431MHX/NOPB
N1234
Pin28282828
Package TypePWPPWPPWPPWP
Industry STD TermHTSSOPHTSSOPHTSSOPHTSSOP
JEDEC CodeR-PDSO-GR-PDSO-GR-PDSO-GR-PDSO-G
Package QTY482500482500
CarrierTUBELARGE T&RTUBELARGE T&R
Device MarkingLM3431AMHLM3431AMHLM3431MHLM3431MH
Width (mm)4.44.44.44.4
Length (mm)9.79.79.79.7
Thickness (mm)1111
Pitch (mm).65.65.65.65
Max Height (mm)1.21.21.21.2
Mechanical DataDownloadDownloadDownloadDownload

Parametrics

Parameters / ModelsLM3431AMH/NOPB
LM3431AMH/NOPB
LM3431AMHX/NOPB
LM3431AMHX/NOPB
LM3431MH/NOPB
LM3431MH/NOPB
LM3431MHX/NOPB
LM3431MHX/NOPB
Dimming MethodAnalog,PWMAnalog,PWMAnalog,PWMAnalog,PWM
Input Voltage, TypeDC/DCDC/DCDC/DCDC/DC
Iout(Max), A0.60.60.60.6
Iq(Typ), mA4444
Operating Temperature Range, C-40 to 125-40 to 125-40 to 125-40 to 125
Package GroupHTSSOPHTSSOPHTSSOPHTSSOP
Package Size: mm2:W x L, PKG28HTSSOP: 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, MinN/AN/AN/AN/A
RatingCatalogCatalogCatalogCatalog
Regulated Outputs3333
Special FeaturesAdjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal ShutdownAdjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal ShutdownAdjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal ShutdownAdjustable Switch Frequency,Enable/Shutdown,Soft Start,Thermal Shutdown
Switching Frequency(Max), kHz1000100010001000
Switching Frequency(Min), kHz200200200200
TopologyBoost,Boost with Current Sink,Multi-ChannelBoost,Boost with Current Sink,Multi-ChannelBoost,Boost with Current Sink,Multi-ChannelBoost,Boost with Current Sink,Multi-Channel
TypeController,InductiveController,InductiveController,InductiveController,Inductive
Vin(Max), V36363636
Vin(Min), V4.54.54.54.5
Vout(Max), V40404040
Vout(Min), V5.55.55.55.5
Vref, V2.52.52.52.5

Eco Plan

LM3431AMH/NOPBLM3431AMHX/NOPBLM3431MH/NOPBLM3431MHX/NOPB
RoHSCompliantCompliantCompliantCompliant

Application Notes

  • AN-1656 Design Challenges of Switching LED Drivers (Rev. A)
    PDF, 171 Kb, Revision: A, File published: 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

Model Line

Manufacturer's Classification

  • Semiconductors> Power Management> LED Driver> LED Lighting - Illumination