The LTC4412 is offered in a low-profile SOT-23 package. E and I grades feature an operating junction temperature range of -40°C to +85°C, high reliability H grades from -40°C to +150°C, and ...

Then, the LTC4412's GATE pin causes the external MOSFET to turn on, reducing its voltage drop from a parasitic diode drop to as low as 10 mV. The system is now in the low loss forward regulation mode.