Can the same capacitor be used to support multiple LP2950s in the same circuit (as Cin)
As stated in the datasheet, a 1 uF capacitor is recommended to be used locally, meaning located nearby the regulator. Here you can take "nearby" as around 1 cm away as a rule of thumb. Hence, if the regulators are located far away from each other, you should use separate capacitors for each regulator. Otherwise, a single capacitor would be sufficient since the impedance is low between the capacitor and the regulator.