Is there a TPS55165-Q1 variant available with a startup voltage (min) of something more like 4.7V (instead of 5.3V)? The TPS55165-Q1 is an almost perfect fit for my application (wide input voltage range, 2 MHz switching, able to provide output of 5V at 1A for a wide input voltage range), but I really need a lower startup voltage capability. This would allow me to power the application using a 5V rail (e.g., USB) with a protection diode (Schottky). Thanks!