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Häufig gestellte Fragen
Does the LDO (Low Dropout Regulator) in the NuMicro® Family need to connect to an external capacitor? Datum：2015-09-25
To stabilize the LDO output voltage in a chip, an external capacitor needs to be connected to the LDO output pin LDO_CAP. The capacitor needs to be close to the LDO_CAP pin. If the chip series has multiple LDO output pins, each LDO output pin requires an external capacitor.
According to different NuMicro® Family series, the value of an external capacitor for LDO_CAP may be different. Please refer to the following table:
|
NuMicro® Family Series |
Minimum Value of an External Capacitor |
|
Mini51 Series |
Do not need an external capacitor. |
|
Mini58 Series |
Do not need an external capacitor. |
|
M051 Series |
1 uF |
|
M0518 Series |
1 uF |
|
NUC029xAN Series |
1 uF |
|
NUC029FAE Series |
Do not need an external capacitor. |
|
NUC100/120 Series |
1 uF |
|
NUC130/140 Series |
1 uF |
|
NUC122 Series |
10 uF |
|
NUC123 Series |
1 uF |
|
NUC131 Series |
1 uF |
|
NUC200/220 Series |
1 uF |
|
NUC230/240 Series |
1 uF |
|
Nano100 Series |
10 uF |
|
Nano1x2 Series |
1 uF |
|
NUC442/472 Series |
1 uF |
|
M451 Series |
1 uF |
|
NUC505 Series |
4.7 uF |
In addition, LDO_CAP can be connected to a 0.1uF bypass capacitor to filter high frequency noise.
| Produkte: | Mikrocontroller ,Arm Cortex-M0-MCUs ,M051-Base-Serie ,M0518-Serie ,M0519-Serie ,Mini51-Base-Serie ,Nano100/102-Base-Serie ,Nano110/112-LCD-Serie ,Nano120-USB-Serie ,Nano130-Advanced-Serie ,NUC029-Serie ,NUC100/200-Advanced-Serie ,NUC120/122/123/220-USB-Serie ,NUC130/230-CAN-Serie ,NUC131-NUC1311-CAN-Serie ,NUC140/240-Konnektivität-Serie ,Arm Cortex-M4-MCUs ,M451-Base-Serie ,M451M-Serie ,M452-USB-Serie ,M453-CAN-Serie ,NUC442/472-Serie ,NUC505-Serie |
|---|---|
| Applikationen: | |
| Funktion: | Peripherals,Power Detection,LDO |