RTKA489800DE0000BU

The RAA489800 is a bidirectional, buck-boost voltage regulator that provides buck-boost voltage regulation and protection features. The advanced Renesas R3™ Technology provides high light-load efficiency, fast transient response, and seamless DCM/CCM transitions.

The RTKA489800DE0000BU takes input power from a wide range of DC power sources up to 23V (such as conventional AC/DC adapters (ADP), USB PD ports, travel ADP) and safely converts it to a regulated voltage up to 21V. The RAA489800 can also convert a wide range DC power source connected at its output (system side) to a regulated voltage to its input (ADP side). This bidirectional buck-boost regulation feature makes the RAA489800 application versatile. In addition to 4-switch buck-boost configuration, it can also support the 2-switch Buck mode operation.

The RTKA489800DE0000BU includes various system operation functions such as the Forward mode enable pin, Reverse mode enable pin, programmable soft-start time, and adjustable forward and reverse VOUT. It also has forward and reverse power-good indicators. The protection functionalities include OCP, OVP, UVP, and OTP.

The RTKA489800DE0000BU has serial communication through SMBus/I²C that allows programming of many critical parameters to deliver a customized solution. These programming parameters include but are not limited to output current limit, input current limit, and output voltage setting.