Product Introduction
WD15-S30T is an AC direct LED driver IC with 4 internal steps. It can drive several series of LEDs from rectified AC voltage. It will provide great convenience in design because it requires a small number of external components. WD15-S30T has higher LED current driving capability, and its current can be adjusted through an external resistor. WD15-S30T will help engineers produce excellent products in LED lighting with energy efficiency, design efficiency, and cost efficiency.
I. LED Driver IC -Features of WD15-S30T:
LEDs driven directly from AC line
Wide input range: 90VAC~305VAC
Constant current drive with 4 internal steps
Adjustable drive current
Compatible with triac dimming
Includes bleed current to supply holding current for triac dimmers
Includes gate driver for external MOSFET, which provides latch current for triac dimmers
Excellent triac dimmer compatibility due to holding and latch currents
Excellent power factor > 0.9
Low total harmonic distortion < 15%
Over-temperature protection
OTP mode selectable: auto-recovery or latch
Phase-off mode selectable: phase-off active or disabled
EMI safe operation
Thermally enhanced QFN 20-pin
II. LED Driver IC -Applications of WD15-S30T:
AC direct LED lamp applications
Downlights
Flush mount lights
Ceiling lights
