FAQ
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FAQ
Does the LDO (Low Dropout Regulator) in the NuMicro® Family need to connect to an external capacitor? Issue Date：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.
| Products: | 마이크로컨트롤러(MCU) ,Arm Cortex-M0 MCUs ,M051 시리즈 ,M0518 시리즈 ,M0519 시리즈 ,Mini51 시리즈 ,Nano100/102 시리즈 ,Nano110/112 LCD 시리즈 ,Nano120 USB 시리즈 ,Nano130 어드밴스드 시리즈 ,NUC029 시리즈 ,NUC100/200 어드밴스드 시리즈 ,NUC120/122/123/220 USB 시리즈 ,NUC130/230 CAN 시리즈 ,NUC131/NUC1311 CAN 시리즈 ,NUC140/240 연결(Connectivity) 시리즈 ,Arm Cortex-M4 MCUs ,M451 시리즈 ,M451M 시리즈 ,M452 USB 시리즈 ,M453 CAN 시리즈 ,NUC442/472 시리즈 ,NUC505 시리즈 |
|---|---|
| Applications: | |
| Function: | Peripherals,Power Detection,LDO |