DK812 Overview
The DK812 is a single stage AC-DC transformer controlling IC. It integrates 700V high voltage power transistor and primary peak current detecting circuit. It also includes Active Power Factor Correction, Primary Side Current Regulation, Output Voltage Control, Self-Power supply and LED loading circuit auto detection functions, can avoid LED loading damage.
DK812 Key Features
- ±3% LED Current Accuracy
- Build-in 700V power transistor
- 85V-265V wide range AC power input
- Quasi-resonant mode, high circuit efficiency, η>90%
- Patent self-power supply circuit design, no need for external winding power supply
- Patent Primary Side Regulation control, no need for additional winding power supply
- Single-Stage Active PFC(Power Factor Correction) for High Power Factor(PF>0.95) and Low THD
- Suitable for several different circuit designs of constant current and limited voltage
- Over current, Over loading, Over temperature, Over voltage, LED short circuit and LED open circuit
- Automatic detection of constant current loading when power is on, to prevent electrical LED lamp