MIC38HC42YN BiCMOS 1A Current-Mode PWM Controller Micrel Semiconductor.
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. (This item was manufactured prior to August 31st, 2018)
Frequency - Max: 500kHz
Voltage - Supply: 9V to 20V
Duty Cycle: 96%
Operating Temperature: -40°C ~ 85°C