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RT9709

Part Number	RT9709
Manufacturer	RichTek
Description	Integrated Over Voltage Protection Circuit
Published	Mar 31, 2015
Detailed Description	RT9709 Integrated Over Voltage Protection Circuit General Description The RT9709 is an integrated circuit (IC) optimiz...
Datasheet	RT9709 PDF File

Overview

RT9709 Integrated Over Voltage Protection Circuit General Description The RT9709 is an integrated circuit (IC) optimized to protect low voltage system from abnormal high voltage input up to 28V.
The IC monitors the input voltage, battery voltage and the charging current to make sure all three parameters are operated in normal range.
It also monitors its own temperature and turns the MOSFET off when the chip temperature exceeds 140°C.
The RT9709 can supportAC charger or USB charger.
When the input voltage exceeds the OVP threshold, the IC turns off the MOSFET within 1us to remove the power before any damage occurs.
The current in the MOSFET is also limited to prevent charging the battery wi...

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