Cost-effective QC 2.0 decoding solution for cellphone chargers and adapters

Now available from Digi-Key, Diodes' AP4370 is a decoding IC compatible with Qualcomm's high-voltage dedicated charging port (HVDCP) quick charge (QC) 2.0 protocol. The device decodes the different combinations of D+/D- signals generated by a portable device and into the related configurations of V1/V2. This can be used to change either the voltage reference or voltage feedback divider resistor for the controller IC to achieve constant voltage and constant current control. AP4370 has over-voltage discharge features to accelerate output voltage decline transition. It automatically provides 5V output configuration for a connected portable device that is not compatible to Qualcomm QC 2.0 protocol. The AP4370 is available in an industry-standard SOT26 package.