OB2263AP Current Mode PWM Control IC,Low Power Switching Power Supply IC,0B2263AP : Amazon.ca: Industrial & Scientific
IIVVERR UC3843B Voltage Mode Modulator Control Circuit PWM Controller SOIC (UC3843B Circuito de control de modulador de modo de voltaje PWM Controlador SOIC - - Amazon.com
1 piece X UCC3813D-1 TI ic low-pwr cur-mode pwm 8-soic: Amazon.com: Industrial & Scientific