Rockchip RK816B
The RK816B is a complex power management integrated circuit (PMIC) for multi-core system applications powered by Li-ion polymer battery cell, or by a 5V input either form an USB port or form an adapter. The RK816B can provide a complete power management solution with very few external components. The RK816B provides four configurable synchronous step-down converters, and six LDO regulators.RK816B Datasheet Rev 1.5 Rockchip RK816B Datasheet Revision 1.5 Oct.2019 Copyright ©2019 Fuzhou Rockchip Electronics Co., Ltd. 1 RK816B Datasheet Rev 1.5 Introduction 1.1 Overview The device also contains a bi-directional charger, the power path management function, and a battery fuel gauge. Power up/power down controller is configurable and can support any customized power up/power down sequences (OTP based). A real time clock (RTC) is also integrated to provide a 32KHz output buffer, and real time function. The RK816B supports 32KHz clock generation based on a crystal oscillator. The switch mode bi-directional charger, together with power path controller integrated in RK816B, allows supplying power form the USB to the loads while it is charging the battery. The charger provides functions such as input current limiting, input voltage limiting, constant temperature charging, trickle current charging, constant current/constant voltage charging, charging termination, dead battery charging, charging over time protection, charging over or under temperature protection, etc.