TLC5940 16 Channel PWM Control LED Driver IC : Amazon.in: Computers & Accessories
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
OB2263AP Current Mode PWM Control IC,Low Power Switching Power Supply IC,0B2263AP : Amazon.ca: Industrial & Scientific