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參數(shù)資料
| 型號： | TLE6365G |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | Step Down Voltage-Regulator with Reset |
| 中文描述： | 降壓電壓調(diào)節(jié)器的復(fù)位 |
| 文件頁數(shù)： | 9/17頁 |
| 文件大?。?/td> | 322K |
| 代理商： | TLE6365G |
TLE 6365
Data Sheet Rev. 1.7
9
2003-06-02
2
Below some important sections of the
TLE 6365
are described in more detail.
Circuit Description
Power On Reset
In order to avoid any system failure, a sequence of several conditions has to be passed.
In case of
V
CC
power down (
V
CC
<
V
RT
for
t
>
t
RR
) a logic LOW signal is generated at the
pin RO to reset an external microcontroller. When the level of
V
CC
reaches the reset
threshold
V
RT
, the signal at RO remains LOW for the Power-up reset delay time
t
RD
before switching to HIGH. If
V
CC
drops below the reset threshold
V
RT
for a time extending
the reset reaction time
t
RR
, the reset circuit is activated and a power down sequence of
period
t
RD
is initiated. The reset reaction time
t
RR
avoids wrong triggering caused by short
“glitches” on the
V
CC
-line.
Figure 3
Reset Function
ON Delay
started
ON Delay
invalid
invalid
ON Delay
Start Up
invalid
t
V
CC
RO
H
L
V
PG
V
RT
t
1V
typ.4,65V
typ.4,70V
t
RD
< t
RR
t
RR
< t
RD
t
RD
Normal
Power
Sart-Up
Normal
Failed
N
Failed
stopped
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