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VIPER20A-E Fiches technique(PDF) 9 Page - STMicroelectronics

No de pièce VIPER20A-E
Description  SMPS primary I.C.
PDF  34 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VIPER20A-E Fiches technique(HTML) 9 Page - STMicroelectronics

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Pin description
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3.5
OSC pin (oscillator frequency):
An Rt-Ct network must be connected on that to define the switching frequency. Note that
despite the connection of Rt to VDD, no significant frequency change occurs for VDD varying
from 8V to 15V. It provides also a synchronisation capability, when connected to an external
frequency source.
Figure 1.
Connection diagrams (top view)
Figure 2.
Current and voltage convention
PENTAWATT HV
PENTAWATT HV (022Y)
DIP-8
PowerSO-10TM
-
+
13V
OSC
COMP SOURCE
DRAIN
VDD
VCOMP
VOSC
VDD
VDS
ICOMP
IOSC
IDD
ID
FC00020



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