The VIPER12AS from STMicroelectronics is an offline converter switch Integrated Circuit for offline topology operating at 60 kHz, in an 8-SOIC package.
The VIPER12ADIP from STMicroelectronics is an offline switch Integrated Circuit for offline converter topology operating at 60 kHz, in an 8-DIP package.
The VIPER122LSTR from STMicroelectronics is an offline switch Integrated Circuit supporting buck, buck-boost and flyback topologies at 60 kHz, in a 10-SSOP package.