1Pcs UC2578DPTR SOP-16 Switching Controllers Buck PWM Stepdown Vltg Reg

1Pcs UC3867DW SOIC-16 Switching Controllers Resonant-Mode

1Pcs UCC3810N PDIP-16 Switching Controllers Dual Ch Sync Current Mode

1Pcs UC3825N PDIP-16 Switching Controllers High Speed PWM Controller

1Pcs UC3823N PDIP-16 Switching Controllers High Speed PWM Controller

1pcs UC3854AN PDIP-16

1Pcs UC3525BDWG4 SOIC-16 Switching Controllers Regulating Pulse Width Modulator