VIPER50B Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
VIPER50B Datasheet PDF : 20 Pages
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VIPER50B/BSP
Figure 9: Oscillator
Rt
Ct
8/20
OSC
VDD
1
For RT > 1.2 KΩ:
FSW
=
2.3
RT CT
DMAX
CLK
DMAX
=
1
−
550
RT − 150
Recommended DMAX values:
100KHz: > 80%
200KHz: > 70%
FC00050
Maximum duty cycle vs Rt
FC00040
0.9
0.8
0.7
0.6
0.5
1
1,000
23
5
10
Rt (kΩ)
20 30 50
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 (kΩ)
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