Circuit diagram L6201 original supply, us $ 2.8-3.2 , [st] stmicroelectronics, l6201 Seekic diagrams
L4972 - 2 A SWITCHING REGULATOR - STMicroelectronics
L5983 - Up to 1.5 A step down switching regulator - STMicroelectronics
L4972 - 2 A SWITCHING REGULATOR - STMicroelectronics
L6201 Original supply, US $ 2.8-3.2 , [ST] STMicroelectronics, L6201