General Description
The RT9730 is an integrated circuit (IC) designed to replace passive device in charging system with extra protection function. It is optimized to protect low voltage system from up to 28V high voltage input. The IC monitors the input voltage to make sure all parameters are operating in normal range. It also monitors its own temperature and turns off the MOSFET when the chip temperature exceeds 140°C.

Features
● No External Blocking Diode Requiring
● Over Voltage Turn Off Time of Less Than 1μs
● High Accuracy Protection Thresholds
● Over Temperature Protection
● High Immunity of False Triggering Under Transients
● Thermal Enhanced 8-Lead WDFN Package
● RoHS Compliant and Halogen Free

Applications
● Cellular Phones
● Digital Cameras
● PDAs and Smart Phones
● Portable Instruments