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VIPER22ASTR-E Datasheet(PDF) 11 Page - STMicroelectronics

Part # VIPER22ASTR-E
Description  Low Power OFF-Line SMPS Primary Switcher
PDF  20 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VIPER22ASTR-E Datasheet(HTML) 11 Page - STMicroelectronics

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VIPer22ADIP/ VIPer22AS - E
Operations
Rev1
11/20
4.5
Overvoltage threshold
An overvoltage detector on the VDD pin allows the VIPer22A to reset itself when VDD
exceeds VDDovp. This is illustrated in Figure 7. which shows the whole sequence of an
overvoltage event. Note that this event is only latched for the time needed by VDD to reach
VDDoff, and then the device resumes normal operation automatically.
Figure 7.
Overvoltage Sequence
t
t
VDS
VDDon
VDD
VDDoff
VDDovp



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