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VIPER20ADIP-E データシートの表示(PDF) - STMicroelectronics

部品番号
コンポーネント説明
メーカー
VIPER20ADIP-E
ST-Microelectronics
STMicroelectronics ST-Microelectronics
VIPER20ADIP-E Datasheet PDF : 31 Pages
First Prev 11 12 13 14 15 16 17 18 19 20 Next Last
5 Operation Description
Figure 14. Oscillator
Rt
VDD
OSC
Ct
VIPer50A-E/ASP-E
For Rt > 1.2kand Ct 40KHz
CLK
FSW
=
---2---.-3---
RtCt
1
-R----t-5--–-5---10---5---0- ⎠⎞
18/31
FC00050
Ct
22nF
15nF
Forbidden area
880
Ct(nF) =
Fsw(kHz)
Forbidden area
40kHz
Fsw
1,000
Oscillator frequency vs Rt and Ct
FC00030
Ct = 1.5 nF
500
300
Ct = 2.7 nF
Ct = 4.7 nF
200
Ct = 10 nF
100
50
30
1
23
5
10
20 30 50
Rt (k)

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