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AN557 数据表(PDF) 21 Page - STMicroelectronics

部件名 AN557
功能描述  EASY APPLICATION DESIGN WITH THE L4970A
PDF  52 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

AN557 数据表(HTML) 21 Page - STMicroelectronics

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AN557 APPLICATION NOTE
Figure 25. Power fail and reset circuit.
Figure 26. Reset and power fail and reset circuit.
Figure 27. Power stage circuit.
Vi
RISING P.FAIL
THRESHOLD
TURN-ON
THRESHOLD
11V
FALLING P.FAIL
THRESHOLD
TURN-OFF THRESHOLD
10V
t
5.1V
100mV
HISTERESIS
4.9V
5V
FALLING
RESET
THRESHOLD
Vo=5.1V
RISING RESET
THRESHOLD
OUTPUT RESET
tDR
tDR
t
t
t
DELAY RESET
POWER FAIL TIME
D93IN013



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