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Charging System Safety Device General Description The RT9730 is an integrated circuit (IC) designed to replace passive device in charging system with extra protection function
https://www.richtek.com/assets/product_file/RT9730/DS9730-01.pdf
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Design Support ▶ Technical Documentation ▶ Power Management for Video Doorbell
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voltage is at its regulation voltage and charging current is less than a user defined percentage of rated charge current and charging is terminated
https://www.richtek.com/battery-management/en/battery-mgmt-overview.html
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Divider 3 mode and 1.2V shorted mode to comply with the legacy fast charging mode of mobile devices
https://www.richtek.com/assets/product_file/RTQ2115C-QA/DSQ2115C-QA-00.pdf
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IC) designed to replace passive device in charging system with extra protection function
Products ▶ Supervisors & Reset ICs ▶ Power Monitoring and Protection ▶ RT9730
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Design Support ▶ Design Reference ▶ EVB_RT1718SGQW
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Divider 3 mode and 1.2V shorted mode to comply with the legacy fast charging mode of mobile devices
https://www.richtek.com/assets/product_file/RTQ2116C-QA/DSQ2116C-QA-00.pdf
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The charging task will always be terminated in constant voltage mode when the charging current reduces to the termination current of 10% x ICHG_FAST
Products ▶ PMICs ▶ RT5021
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The battery volume and the state of charging and discharging can be indicated by 4LEDs
https://www.richtek.com/assets/product_file/RT9480/DS9480-05.pdf
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https://www.richtek.com/~/media/AN PDF/AN068_EN.pdf
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