LYT6072C
LYTSwitch-6 LED driver with 650V MOSFET for high-power lighting up to 24W with excellent dimming
Product Overview
Description
The LYT6072C is a member of the LYTSwitch-6 family, designed for high-performance LED lighting applications requiring excellent dimming performance.
This IC integrates a 650V power MOSFET and controller, enabling compact and cost-effective designs for retrofit lamps and commercial lighting.
The device features accurate constant current control, wide dimming range down to 1%, and comprehensive protection features for reliable operation.
Product Series
LYT
Primary Application
LED retrofit lamps
Key Features
- Integrated 650V power MOSFET
- Accurate constant current control
- Excellent phase-cut dimming performance
- High power factor >0.9
- Low THD <20%
- Comprehensive protection features
Specifications
| Output Power | Up to 24W |
|---|---|
| Input Voltage | 90-305V AC |
| MOSFET Voltage | 650V |
| Output Current | Up to 350mA |
| Dimming Range | 1-100% |
| Power Factor | >0.9 |
| Package | SO-8 |
Applications
LED retrofit lamps
Electronic system design
Downlights and spotlights
Electronic system design
Commercial lighting
Electronic system design
Industrial lighting
Industrial automation and control
FAE Expert Insights
"LYTSwitch-6 is my preferred choice for LED lighting designs requiring excellent dimming performance. The LYT6072C offers superior phase-cut dimming compatibility with standard wall dimmers, which is critical for consumer lighting products. What impresses me most is the consistent dimming performance down to 1% brightness without flicker. The integrated 650V MOSFET provides excellent surge immunity for reliable operation. For designs requiring high power factor, the device easily meets IEC 61000-3-2 requirements. I recommend using the SO-8 package for good thermal performance and automated assembly."
Excellent dimming performance down to 1% with high power factor
— Sarah Liu, BeiLuo
Frequently Asked Questions
What is the dimming performance of LYTSwitch-6?
LYTSwitch-6 offers excellent phase-cut dimming performance: 1) Wide dimming range from 1% to 100% brightness, 2) Smooth dimming curve without flicker or shimmer, 3) Compatible with most standard leading-edge and trailing-edge wall dimmers, 4) Consistent dimming performance across line voltage variations, 5) No visible flicker at any dimming level. The device uses advanced control algorithms to maintain stable LED current even at very low dimming levels. This makes it ideal for residential and commercial lighting applications where dimming quality is critical.
Choose LYTSwitch-6 for applications requiring high-quality phase-cut dimming with standard wall dimmers.
How do I design for high power factor with LYTSwitch-6?
Achieving high power factor with LYTSwitch-6 involves proper circuit design: 1) Use the recommended buck inductor value from the datasheet or PI Expert software, 2) Select appropriate input capacitor to balance PF and ripple, 3) Follow the layout guidelines for minimal EMI and optimal performance, 4) The device achieves PF > 0.9 with typical designs meeting IEC 61000-3-2 Class C requirements, 5) THD is typically <20% at full load. For the highest PF, use smaller input capacitance and optimize the inductor value. The datasheet provides design curves showing PF vs. line voltage and load conditions.
Follow datasheet recommendations and use PI Expert software for optimized high-PF designs.
What protection features does LYTSwitch-6 provide?
LYTSwitch-6 includes comprehensive protection features: 1) LED Open-Circuit Protection - limits output voltage if LED string opens, 2) LED Short-Circuit Protection - hiccup mode during sustained short, 3) Thermal Foldback - reduces current at high temperature to prevent damage, 4) Line Surge Protection - integrated 650V MOSFET withstands line surges, 5) Auto-Restart - automatic recovery after fault removal. These protections ensure safe operation under abnormal conditions and protect both the driver and LED load. The thermal foldback feature is particularly important for enclosed fixtures with limited heat dissipation.
The comprehensive protection features make LYTSwitch-6 suitable for reliable commercial and residential lighting applications.
How do I select the inductor for LYTSwitch-6?
Inductor selection for LYTSwitch-6 involves: 1) Inductance value - typically 470μH to 2.2mH depending on output current and ripple requirements, 2) Current rating - saturation current should exceed peak LED current by 50%, 3) Core material - ferrite cores recommended for high-frequency operation, 4) DCR - lower DC resistance improves efficiency, 5) Temperature rating - must handle maximum operating temperature. The datasheet provides recommended values for common designs. For 350mA LED current, a 1mH inductor with 0.6A saturation current is typically suitable. Always verify inductor temperature under maximum ambient conditions.
Use PI Expert software for inductor recommendations, or contact our FAE team for custom design assistance.
What is the typical efficiency of LYTSwitch-6 designs?
LYTSwitch-6 achieves typical efficiency of 85-92% depending on design conditions: 1) Output voltage - higher voltage outputs achieve better efficiency, 2) LED current - efficiency varies with load, typically peak at full load, 3) Input voltage - universal input designs may have slightly lower efficiency at low line, 4) Inductor quality - lower DCR improves efficiency, 5) Topology - buck topology generally more efficient than others. For a typical 12V/350mA LED design, efficiency of 88-90% can be achieved. The high efficiency reduces thermal dissipation, enabling compact designs without external heatsinking.
Use PI Expert software to estimate efficiency for your specific LED driver design and optimize component selection.