SD6920 is designed for non-isolated LED driving with floating Buck structure. With this structure, inductor current is sensed and closed-loop is formed with the internal error amplifier for high constant current accuracy and high input/output regulation rate. Also, high PF in full voltage range is available as its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.
SD6920 integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle current limit protection, and over temperature protection.
SD6920 has a built-in VCC regulator, which allows periphery operating without auxiliary winding and makes output voltage range maximized.
The start-up current and operating current are low and highlight LED can be driven with high efficiency in full voltage range (85VAC~265VAC).
Proprietary constant control method (Patent)
Constant current with high accuracy for LED (<±3%)
PF>0.9 in full voltage range
High conversion efficiency>93% (18W)
Boundary-Conduction mode
LED short circuit protection (Patent)
LED open circuit protection
VCC over/under voltage protection
Over temperature protection
Over current protection
Product Name | Package form | Marking | Hazardous Substance Control | Packing Type | Remarks |
---|---|---|---|---|---|
SD6920TR | SOT-23-6L | / | Halogen free | Tape & Reel |
title | Types of | Size (KB) | date | Download the latest English version |
---|---|---|---|---|
SD6920 | 0 | 1970-01-01 | SD6920 Brief Datasheet |