Datasheet
Package Availability, Models, Samples & Pricing
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
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Application Notes
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| 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
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380 Kbytes |
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| 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
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493 Kbytes |
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| 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
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746 Kbytes |
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[Information as of 4-Jul-2009]
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