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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WEBENCH Power Designer My Designs

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


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]