UPD720250K8-711-BAP-A#YK1 Overview
It is a part of the 32-QFN package. This packaging has a Tape & Reel (TR)-shape, making it convenient to carry around. A reliable operation requires a temperature that is regulated to -40°C~105°C. It should work as long as you use a 3.3VV power source.
UPD720250K8-711-BAP-A#YK1 Features

UPD720250K8-711-BAP-A#YK1 Applications
There are a lot of Renesas Electronics America
UPD720250K8-711-BAP-A#YK1 Controllers Interface ICs applications.

Dimmable LED Power Supply
Dimming Control Devices
Commercial LED Lighting
Smart LED Lighting
Portable Appliances
Battery-Operated Devices
Cellular Data Devices
Factory Automation and Process Controls
IrDA transmission control
Remote transmission formatter

Package / Case	32-QFN
Operating Temperature	-40°C~105°C
Packaging	Tape & Reel (TR)
Part Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Voltage - Supply	3.3V
Function	Controller
Protocol	USB
Standards	USB 2.0, USB 3.0