LM3404HV - 1.0A Constant Current Buck Regulator for High Power LED Drivers from the PowerWise® Family
Datasheet Packaging Samples & Pricing Eval. Boards Reliability 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


ParametersValues
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 Yes
PowerWise Yes


Typical Performance

click for larger image


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


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Also Recommended
LM3402HV▲For 500mA Output Current
LM3404▲For Vin Range 6V To 75V
Additional Resources
Design Tools


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

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


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-
8 weeksN/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+$1.55rail
of
95		NSZXTT
L3404
HVMA
12 weeks2000
LM3404HVMAXSOIC NARROW8NOPB1260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.55reel
of
2500		NSZXTT
L3404
HVMA
6 weeks15000
LM3404HVMRPSOP8NOPB3260RoHS Download Full productionN/A
Samples
Buy Now 		1K+$1.55rail
of
95		NSXYTT
L3404
HVMR
10 weeksN/A
LM3404HVMRXPSOP8NOPB3260RoHS Download Full productionN/A
 
Buy Now 		1K+$1.55reel
of
2500		NSXYTT
L3404
HVMR
10 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.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM3404HVMAABCD150XV1038680025950002736338335
LM3404HVMAXABCD150XV1038680025950002736338335
LM3404HVMRABCD150XV1038680025950002736338335
LM3404HVMRXABCD150XV1038680025950002736338335

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
Article - 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 665
Kbytes		 14-Aug-09 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 7-Nov-2009]