Part Number:LM5007
Issues with the part heating up and thermal cycling with a load of 200mA (IC REG BUCK ADJ 0.5A 8VSSOP)
Design: Vin=55VDC, Vout=3.3VDC Iout=200mA trying to get to 400-500mA
L=100uH
Ron=200K
Rcl=100K
Rfb2=3.3K
Rfb1=10K
Cout=22uF with series 1 ohm resistor.
any help appreciated