1A output current limit -3.3V negative converter circuit diagram

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

Photocoupler

The LT8611 is a compact, high efficiency, high speed, synchronous, monolithic, step-down switching regulator that consumes only 2.5μA of quiescent current. The device integrates the upper and lower tube power switches and all necessary circuitry to minimize the need for additional external components. An internal current sense amplifier with monitoring and control pins enables accurate input or output current regulation and limiting. Low ripple Burst Mode® operation achieves high efficiency at very low output current while maintaining output ripple below 10mVpp.