Ultra small photocouplers specified up to 110°C

Target applications range from programmable logic controllers and switching power supplies to inverters and servo amplifiers for factory automation systems. Offering ac and dc inputs respectively, the TLP290-4 and TLP291-4 are general purpose transistor couplers that integrate four output channels into a small and thin SO16 package measuring just 10.3 x 7.0 x 2.3mm. Each device has a minimum isolation voltage rating of 2500V_rms and an operating temperature range of -55 to 110°C. The devices are built around four photo transistors, each of which is optically coupled to a gallium arsenide infrared led. Both couplers are rated for a minimum collector emitter voltage of 80V and have a current transfer ratio ranging from a minimum of 50% up to 400%. As well as new designs, the TLP290-4 and TLP291-4 also offer a simplified migration path for existing applications based on their predecessors, the TLP280-4 and TLP281-4.