RAA489108

The RAA489108 is a buck-boost Narrow Output Voltage DC (NVDC) charger. The RAA489108 provides NVDC charging, system bus regulation, and protection features for tablets, Ultrabooks, notebooks, power banks, and any USB-C interface platform. The advanced Renesas R3™ technology provides high light-load efficiency and fast transient response.

In Charging mode, the RAA489108 accepts input power from a wide range of DC power sources (such as conventional AC/DC charger adapters, USB PD ports, and travel adapters) and safely charges battery packs with up to 4-series cell Li-ion batteries.

As an NVDC topology charger, the RAA489108 also regulates the system output to a narrow DC range for stable system bus voltage. System power can be provided from the adapter, battery, or a combination of both. The RAA489108 can operate with only a battery, only an adapter, or with both connected. For Intel IMVP compliant systems, the RAA489108 includes PSYS (system power monitor) functionality, which provides an analog signal representing total platform power consumption. The PSYS output connects to a wide range of Renesas IMVP core regulators to provide an IMVP compliant power domain function.

The RAA489108 supports reverse buck, reverse boost, or reverse buck-boost operation to the input port from 2-cell to 4-cell batteries.

The RAA489108 provides SMBus/I²C serial communication that enables programming of many critical parameters to deliver a customized solution.