Semtronics Micro Systems

Non Isolated | Internal MOSFET

SM2097 is a high precision step-down constant current LED driver chips. Chip inductor current critical work in continuous mode for 85Vac ~ 265Vac input voltage full range of non-isolated buck LED constant current power supply. SM2097 chip integrated 500V power switch, power detection and no auxiliary winding, making it easier to peripheral devices, saving the cost and size of the system.

SM2097 chip with high-precision current sampling circuit, high accuracy LED constant current output and excellent line voltage regulation. Chip inductor current critical work mode, output current with inductance and LED operating voltage changes varied to achieve excellent load regulation.

SM2097 has multiple protection features including LED short circuit protection, under-voltage protection, the chip overheating adjustment function. SM2097 use SOT23-3 package.

Key Features

  • Integrated 500V power MOSFET
  • Inductor Critical Continuous Current Mode
  • Low operating current without auxiliary power winding
  • Wide input voltage range
  • ± 5% LED current accuracy
  • LED open-circuit protection
  • LED short-circuit protection
  • Chip supply voltage protection
  • Over temperature protection
  • System is small, low cost BOM
  • Use SOT23-3 package


  • GU10 LED Spotlight
  • E17 / E27 LED candle light
  • LED Bulb
  • Other LED Lighting

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