RT9478M Datasheet | Richtek

Description The RT9478M is a 4-switch bidirectional buck-boost Narrow Voltage DC (NVDC) charge controller, designed to charge 2- to 4-cell batteries from a wide range of DC power sources, including USB-C Power Delivery (PD) sources, conventional AC-DC charger adapters, and mobile batteries. The device’s SMBus serial munication interface allows for flexible programming of various parameters, including charging current, charging voltage, and protection thresholds for overvoltage and undervoltage conditions affecting the input, battery, and system outputs. The remended junction temperature range is - 40C to 125C, and the ambient temperature range is - 40C to 85C. 2 Applications - Drones - Portable Speakers - Portable Devices and Accessories 3 Features - Programmable Frequency: 720k Hz/800k Hz/1.2MHz - Wide Input Voltage Range from 3.8V to 24V - Average Input Current Regulation (AICR) - Minimum Input Voltage Regulation (MIVR) - Support 10m and 5m Sensing Resister - High Accuracy for 2%...