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參數資料
| 型號： | TLE6365G |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, DSO-8 |
| 文件頁數： | 18/18頁 |
| 文件大小： | 279K |
| 代理商： | TLE6365G |
TLE 6365
Data Sheet
9
Rev. 1.9, 2007-07-30
Circuit Description
Below some important sections of the TLE 6365 are described in more detail.
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 (VCC < VRT for t > tRR) 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 tRD
before switching to HIGH. If
V
CC drops below the reset threshold VRT 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 tRR avoids wrong triggering caused by short
“glitches” on the
V
CC-line.
Figure 3
Reset Function
AET03325.VSD
Invalid
Start Up
Invalid
V
CC
t
V
PG
V
RT
Typ. 4.70 V
Typ. 4.65 V
1 V
<
t
RR
<
t
RD
t
RO
ON Delay
H
L
Started
ON Delay
Stopped
t
RD
t
RR
t
RD
ON Delay
Power
Start-Up
Normal
Failed
N
Failed
Normal
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