vni4140 is a power management chip, its parameters are the voltage output range is 1.1V-1.85V, the switching frequency is 80KHz. LED. The input voltage ranges from 2.7V to 5.5V. Power management chip It supports two\/three\/four phase power supply, support VRM9.0 specification, voltage output range is 1.1V-1.85V, can adjust the output of 0.025V interval, switching frequency up to 80KHz, with large power supply, small ripple, small internal resistance and other characteristics, can precisely adjust the CPU power supply voltage.