The SDH8633 Switching Controllers with DIP-8 package is manufactured by Silan. This controller is RoHS compliant and features an integrated high-speed n-channel MOSFET and accurate current regulation for synchronous rectified flyback converters typically implemented in notebook adapters, LCD TVs, and external chargers. The controller ensures no audible noise during light load operations with optimized minimum off-time. It offers over-current, over-voltage, and over-temperature protection circuitry and includes a UVLO (Under Voltage Lock Out) feature. The switching frequency is externally adjustable and operates with a wide 4.5V to 38V input voltage range.