UC1842, UC2842, UC3842, UC1843, UC2843, UC3843 UC1.
Texas Instruments
UC2845D - Current-Mode PWM Controller
UC1842, UC2842, UC3842, UC1843, UC2843, UC3843 UC1844, UC2844, UC3844, UC1845, UC2845, UC3845 SLUS223G – APRIL 1997 – REVISED JULY 2022 UCx84x Current.
ON Semiconductor
UC2845D - High Performance Current-Mode Controller
UC3844, UC3845, UC2844, UC2845 High Performance Current Mode Controllers The UC3844, UC3845 series are high performance fixed frequency current mode .