Data Sheets

LYTSwitch-6 Data Sheet
Flyback CV/CC LED Driver IC with Integrated 650/725 V MOSFET and FluxLink Feedback
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Product Details
The LYTSwitch™-6 series family of ICs dramatically simplifies the development and manufacturing of off-line LED drivers, particularly those in compact enclosures or with high efficiency requirements. The LYTSwitch-6 architecture is revolutionary in that the devices incorporate both primary and secondary controllers, with sense elements and a safety-rated feedback mechanism into a single IC.
Close component proximity and innovative use of the integrated communication link, FluxLink, permit accurate control of a secondaryside synchronous rectification MOSFET with Quasi-Resonant switching of primary integrated high-voltage MOSFET to maintain high efficiency across the entire load range.
Product Highlights
Highly Integrated, Compact Footprint
- Up to 94% efficiency across full load range
- Incorporates a multi-mode Quasi-Resonant (QR) / CCM flyback controller, 650 V or 725 V MOSFET, secondary-side control and synchronous rectification driver
- Integrated FluxLink™, HIPOT-isolated, feedback link
- Exceptional CV/CC accuracy, independent of transformer design or external components
- Adjustable accurate output current sense using external sense resistor
- PWM dimmable
EcoSmart™ – Energy Efficient
- Less than 15 mW no-load including line sense (without PF front end)
- Easily meets Energy Star and all global lighting energy efficiency regulations
- Low heat dissipation
Advanced Protection / Safety Features
- Input line OV with auto-restart
- Output fault OVP/UVP with auto-restart
- Open SR FET gate detection
- Input voltage monitor with accurate brown-in
- Thermal foldback ensures that power continues to be delivered (lower level) at elevated temperatures
Full Safety and Regulatory Compliance
- Reinforced insulation
- Isolation voltage >4000 VAC
- 100% production HIPOT compliance testing
- UL1577 and TUV (EN60950) safety approved
Green Package
- Halogen free and RoHS compliant Applications
- Isolated off-line LED driver
- Smart LED lighting
- High-voltage flyback post regulator
Applications
Power Table
Output Power (Watts)1 | |||
---|---|---|---|
Product2 | 227 VAC ± 15% | 85-305 VAC | 380 VDC/ 450 VDC3 |
Open Frame | Open Frame | Open Frame | |
LYT6063C/6073C4 | 15 W | 12 W | 25 W |
LYT6065C/6075C | 30 W | 25 W | 40 W |
LYT6067C/6077C | 50 W | 45 W | 60 W |
LYT6068C | 65 W | 55 W |
Notes:
- Minimum continuous power in a typical non-ventilated and PCB size measured at 40 °C ambient. Max output power is dependent on the design and must ensure that package temperature is < 125 °C
- C Package: InSOP-24D
- With 725 V FET only
- LYTxx6xC - 650 V MOSFET, LYTxx7xC - 725 V MOSFET