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TPS55165-Q1: Similar device with lower VIN_startup capability

Part Number: TPS55165-Q1

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!