LM3402HVMM 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.
Key Features:
- Integrated 0.5 A N-channel MOSFET.
- VIN Range from 6 V to 42 V (LM3402).
- VIN Range from 6 V to 75 V (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.
Applications:
- LED Driver.
- Constant Current Source.
- Automotive Lighting.
- General Illumination.
- Industrial Lighting.
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