LM3404HV - 1.0A Constant Current Buck Regulator for High Power LED Drivers from the PowerWise® Family

Datasheet Packaging Samples & Pricing Eval. Boards Design Tools Knowledge Base

Features
•Integrated 1.0A MOSFET
•VIN Range 6V to 42V (LM3404)
•VIN Range 6V to 75V (LM3404HV)
•1.2A Output Current Over Temperature
•Cycle-by-Cycle Current Limit
•No Control Loop Compensation Required
•Separate PWM Dimming and Low Power Shutdown
•Supports all-ceramic output capacitors and capacitor-less outputs
•Thermal shutdown protection
•SO-8 Package, PSOP-8 Package

General Description

The LM3404/04HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. More...


Applications

•LED Driver
•Constant Current Source
•Automotive Lighting
•General Illumination
•Industrial Lighting
  Typical Application
click for larger image


Parametric Table     expand
Parametric Table    collapse
Topology Buck
Input Min Voltage 6 Volt
Input Max Voltage 75 Volt
Output Current 1000 mA
Efficiency (peak) 96 %
Topology Buck
Input Min Voltage 6 Volt
Input Max Voltage 75 Volt
Output Current 1000 mA
Efficiency (peak) 96 %
Output Min 0.2 Volt
Output Max 73 Volt
Special Features Current Regulator
Adjustable Output Yes
On/Off Pin Yes
Error Flag No
Switching Frequency 1000 kHz
Adj Switch Frequency Yes
Sync Pin No
Step-Down Yes
Step-Up No
Inverting No
Flyback No
RegType Switching Regulator
Temperature Min -40 deg C
Temperature Max 125 deg C
Automotive Selection Guide Yes
PowerWise Yes
View Using Catalog


Typical Performance

click for larger image


  WEBENCH Live Simulation!
LED WEBENCH® Designer

LM3404HV
 
6.00 <=		 V in Lower
 V		  
<=		 V in Upper
 V		  
<= 75.00
Ambient Temperature  °C <= 100


What are WEBENCH® tools?


Also Recommended
LM3402HVFor 500mA Output Current
LM3404For Vin Range 6V To 75V

Additional Resources

Design Tools (see below)


Block Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM3404/04HV 1.0A Constant Current Buck Regulator for Driving High Power LEDs 563 Kbytes 14-Dec-08 Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LM3404FSTDIMEVLM3404FSTDIMEV - Fast Dimming and True Constant LED Current Evaluation BoardFull productionN/A
 
Buy Now 		1+$40.001-
N/AN/A
LM3404MREVALLM3402/LM3404 High Power PSOP-8 Evaluation boardFull productionN/A
 
Buy Now 		1+$37.501-
8 weeksN/A
LM3404HVEVALLM3404HVMA (SOIC) - 1A Constant Current Buck HV Regulator for HB LEDs (LM3404HVEVAL Board)Full productionN/A
 
Buy Now 		1+$37.501-
8 weeksN/A
LM3404HVMASOIC NARROW8NOPB1260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.49rail
of
95		NSZXTT
L3404
HVMA
6 weeks2000
LM3404HVMAXSOIC NARROW8NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.49reel
of
2500		NSZXTT
L3404
HVMA
6 weeks10000
LM3404HVMRPSOP8NOPB3260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.49rail
of
95		NSXYTT
L3404
HVMR
6 weeksN/A
LM3404HVMRXPSOP8NOPB3260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.49reel
of
2500		NSXYTT
L3404
HVMR
8 weeksN/A

General Description

The LM3404/04HV are monolithic switching regulators designed to deliver constant currents to high power LEDs. Ideal for automotive, industrial, and general lighting applications, they contain a high-side N-channel MOSFET switch with a current limit of 1.5A (typical) for step-down (Buck) regulators. Hysteretic controlled on-time and an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series-parallel connected LED arrays of varying number and type. LED dimming via pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the feature set.

Design Tools

TitleSize in Kbytes Date Click link below to Download    
Contact us for questions on this product     View    

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Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1629: Application Note 1629 Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 Packages 410 Kbytes 31-May-07 Download
AN-1629 (Chinese): Application Note 1629 Thermal Performance of the LM3404/04HV in SO-8 and PSOP-8 Packages
 380 Kbytes  
AN-1585: Application Note 1585 LM3402 and LM3404 High Power PSOP-8 Evaluation Board 493 Kbytes 4-Oct-07 Download
AN-1545: Application Note 1545 LM3404/LM3404HV Evaluation Board 661 Kbytes 7-Jan-08 Download
AN-1545 (Chinese): Application Note 1545 LM3404/LM3404HV Evaluation Board
 493 Kbytes  
AN-1839: Application Note 1839 LM3402/LM3404 Fast Dimming and True Constant LED Current Evaluation Board 678 Kbytes 10-Dec-08 Download
AN-1839 (Chinese): Application Note 1839 LM3402/LM3404 Fast Dimming and True Constant LED Current Evaluation Board
 746 Kbytes  

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 4-Jul-2009]