This part is a kind of semiconductor called MC34060A.

Function of this product has Voltage Mode Single Ended Controllers.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

MC34060A, MC33060A Fixed Frequency, PWM, Voltage Mode Single Ended Controllers The MC34060A is a low cost fixed frequency, pulse width modulation control circuit designed primarily for single−ended SWITCHMODEt power supply control. The MC34060A is specified over the commercial operating temperature range of 0° to +70°C, and the MC33060A is specified over an automotive temperature range of −40° to +85°C. Features • Complete Pulse Width Modulation Control Circuitry • On−Chip Oscillator with Master or Slave Operation • On−Chip Error Amplifiers • On−Chip 5.0 V Reference, 1.5% Accuracy • Adjustable Dead−Time Control • Uncommitted Output Transistor Rated to 200 mA Source or Sink • Undervoltage Lockout • These are Pb−Free and Halide−Free Devices PIN CONNECTIO [ ... ]

MC34060A PDF Datasheet Download