Current Mode PWM Controller 8-Pin SOIC T/R

The NCL30082 is a PWM current mode controller targeting isolated flyback and non-isolated buck-boost constant current topologies. The controller operates in a quasi-resonant mode to provide high efficiency. Thanks to a novel control method, the device is able to precisely regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components.A robust suite of safety protection is built in to simplify the design.The device supports analog/digital dimming and thermal foldback. While the NCL30082 has integrated fixed overvoltage protection, the designer has the option to program a lower OVP level.

• Primary Side Sensing
• Wide V_CC Range
• Precise LED Current Regulation of ± 1% typical
• 0.9 PF with passive valley fill
• User Programmable Thermal Foldback
• Analog and Digital Dimming Input
• Secondary Diode Short Protection
• V_CC Undervoltage and overvoltage protection
• Shorted Current Sense Fault Detection
• Latched and Auto-recoverable versions
• Wide Temperature range of -40 to 125 °C
• Input Line Voltage Sensing
• Open and Shorted Output LED Protection