The LM3404HVMA/NOPB(购买请点击) are monolithic switching regulators designedto deliver constant currents to high power LEDs. Idealfor automotive, industrial, and general lighting applications,they contain a high-side N-channel MOSFET switch with acurrent limit of 1.5A (typical) for step-down (Buck) regulators.Hysteretic controlled on-time and an external resistor allowthe converter output voltage to adjust as needed to deliver aconstant current to series and series-parallel connected LEDarrays of varying number and type. LED dimming via pulsewidth modulation (PWM), broken/open LED protectionLM3404HVMA/NOPB(购买请点击), lowpowershutdown and thermal shutdown complete the featureset.
Features
Integrated 1.0A MOSFET;
VIN Range 6V to 42V (LM3404);
VIN Range 6V to 75V (LM3404HVMA/NOPB );
1.2A Output Current Over TemperatureLM3404HVMA/NOPB(购买请点击);
Cycle-by-Cycle Current Limit;
No Control Loop Compensation Required;
Separate PWM Dimming and Low Power ShutdownLM3404HVMA/NOPB(购买请点击);
Supports all-ceramic output capacitors and capacitor-lessoutputs;
Thermal shutdown protection;
SO-8 Package, PSOP-8 Package。
Applications
LED Driver;
Constant Current SourceLM3404HVMA/NOPB(购买请点击);
Automotive Lighting;
General Illumination;
Industrial Lighting。
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