1.3.2 Regulated Output Voltage Pin (VOUT)
The VOUT pin is the regulated output voltage VR of the LDO. A minimum output capacitance of 3.3 µF is required for the LDO to ensure the stability in all operating conditions. The MCP1781 is stable with ceramic capacitors. See Section 2.2 “Output Capacitance Requirements” for output capacitor selection guidance.