LYT5225D-TL

LYT5225 is ideal for single-stage power factor corrected constant current LED applications - bulbs, tubes and ballasts.

Each device incorporates a high-voltage power MOSFET and discontinuous mode, variable frequency, variable on-time controller. The controller also provides fast (cycle-by-cycle) current limit, input and output OVP, plus advanced thermal management circuitry.

The combination of a low-side switching topology, cooling via electronically quiet SOURCE pins and frequency jitter ensures extremely low EMI. This reduces the size of the input filter components-greatly reducing audible noise.

• Combined Single-Stage PFC + Accurate CC Output
  • Accurate CC, better than ±3%
  • Power Factor >0.9
  • Low THD, <10% with typical input and output conditions
  • >90% efficient in optimized designs
  • High switching frequency and DCM allow compact magnetics
• Design Flexibility
  • Supports buck, buck-boost, tapped-buck, boost, isolated and non-isolated fly back topologies
  • 2 MOSFET voltage options and 3 power levels for optimum device selection
• Highest Reliability
  • No electrolytic bulk capacitors or opt isolators for increased lifetime
  • Comprehensive protection features
  • Input and output overvoltage
  • Open-loop protection
  • Advanced thermal control
  • Thermal fold back allows output light delivery at abnormally high ambient temperatures
  • Hysteretic shutdown provides protection during fault conditions
• MOSFET VDS Rating 725 V