iW3658 Datasheet | Dialog Semiconductor

i W3658 Single-Stage SSL LED Driver with Integrated High Voltage MOSFET for Dimmable Retrofit Lamps up to 15W 1 Description The i W3658 is a highly integrated, high-performance off-line power supply controller for phase-cut dimmable LED luminaires. It uses patented Prim Accurate™ primary-side sensing technology to regulate output current accurately without the need for a feedback circuit. The i W3658 operates at boundary conduction mode to achieve high efficiency and low EMI. With advanced dimming control technology, the i W3658 can operate with most wall dimmers including leading-edge dimmers (R-type or R-L type) and trailing-edge dimmers (R-C type). The i W3658 operates in buck-boost mode to regulate current to the output LEDs. Dialog’s innovative technology maximizes the i W3658 performance with an integrated high-voltage MOSFET in an SO-7 package, which provides an extra pin spacing between the high voltage MOSFET’s drain and low voltage pins. With Dialog’s proprietary VCC regulation circuit, the i W3658’s VCC level is well maintained regardless of the LED voltage and dimmer phase angle, which eliminates the possibility of low end flickering. 2 Features - - Isolated/non-isolated off-line 120VAC/230VAC LED driver up to 15W (Note 1) - - Wide line frequency range (45Hz - 66Hz) - - Excellent dimmer patibility xx Leading-edge dimmer xx Trailing-edge dimmer - - Low BOM cost - - Integrated high-voltage MOSFET - - Single-winding inductor - - Internal start-up without the need for high voltage circuit - - Closed-loop constant current regulation - - Built-in LED current derating at high temperature - - Built-in over-temperature shut-down - - LED open and short protection - - Fast start-up (< 0.5s without dimmer) - - Resonant control to achieve high efficiency (typical > 85%) - - Supports Buck-Boost topology 3 Applications - - Dimmable LED retrofit lamps up to 15W (Note 1) xx A-style, BR, GU and PAR - - Fits in E26/27 Socket for All-Glass Lamps Product Summary .dialog-semiconductor....