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MC34063A Equivalent with synchronous rectification

Other Parts Discussed in Thread: MC34063A

As per title,

I'm looking for a modern replacement for the MC34063A, which is a buck/boost converter with BJT output.

Features I would be looking for ar:

  • Synchronous rectification
  • Mosfet output stage
  • Lower Vsense threshold (on MC34063 is about 1250mV)

Any advice?