General Description
The LM3402/02HV 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 735 mA (typical) for step-down (Buck) regulators. Hysteretic control with controlled on-time coupled with an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series - parallel connected arrays of LEDs of varying number and type, LED dimming by pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the feature set.

*Integrated 0.5A N-channel MOSFET
*VIN Range from 6V to 42V (LM3402)
*VIN Range from 6V to 75V (LM3402HV)
*500 mA 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
*MSOP-8, PSOP-8 Packages

*LED Driver
*Constant Current Source
*Automotive Lighting
*General Illumination
*Industrial Lighting

LM3402MM, LM3402MMX, LM3402HVMM, LM3402HVMMX, LM3402MR, LM3402MRX, LM3402HVMR, LM3402HVMRX

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