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よくある質問
Does the LDO (Low Dropout Regulator) in the NuMicro® Family need to connect to an external capacitor? 日付：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.
| 製品: | マイクロコントローラ ,Arm Cortex-M0 MCU ,M051 ベースシリーズ ,M0518シリーズ ,M0519シリーズ ,ミニ 51 ベースシリーズ ,ナノ 100/102 ベースシリーズ ,ナノ 110/112 LCD シリーズ ,ナノ 120 USB シリーズ ,ナノ 130 アドバンストシリーズ ,NUC029 シリーズ ,NUC100/200 アドバンストシリーズ ,NUC120/122/123/220 USB シリーズ ,NUC130/230 CAN シリーズ ,NUC131/NUC1311 CAN シリーズ ,NUC140/240 コネクティビティシリーズ ,Arm Cortex-M4 MCU ,M451 ベースシリーズ ,M451M シリーズ ,M452 USB シリーズ ,M453 CAN シリーズ ,NUC442/472 シリーズ ,NUC505 シリーズ |
|---|---|
| アプリケーション: | |
| 機能: | Peripherals,Power Detection,LDO |