Slew Rate SettingWhen the VBUS voltage is changed dynamically through reference voltage (VBUSREF_I_SET and VBUSREF_I_SET2 registers or VBUSREF_E_SET and VBUSREF_E_SET2 registers), the reference voltage change rate can be controlled through SLEW_SET bits. For example, the VBUS is set in internal way with 5x ratio, and the VBUSREF_I = 1V at first (VBUS = 5V), then the user sets the VBUSREF_I voltage to 1.6V to get 8V output. If the slew rate is 2mV/ μs, the VBUS voltage will increase to 8V in 600mV / 2mV/μs = 300μs.