YHM2009: WLP-6 OVP,Uart communication
YHM2006: WLP-12 OVP, OCP, NTC over temperature protection, Uart communication
YHM4001: POGO pin communication, 1.5A fast charge path, voltage/current/impedance monitoring
YHM2710: 500mA Linear Charger
YHM4501: DDR VTT Buffer
YHM4502: ECG Buffer,low bias current,high input impedance,Lead On detection path