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參數(shù)資料
| 型號： | FM810TS3X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 3-Pin UC Supervisor Circuits |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | SOT-23, 3 PIN |
| 文件頁數(shù)： | 3/7頁 |
| 文件大小： | 46K |
| 代理商： | FM810TS3X |
3
www.fairchildsemi.com
F
μ
C
FM809/810 Rev. C
Pin Descriptions
Pin Number
Name
Function
1
GND
GROUND
2
RESET*
RESET (RESET) remains LOW (HIGH)
while V
CC
is below V
TH
, and for at least
140ms after V
CC
rises above V
TH
.
3
V
CC
* with overbar, FM809 (RESET); without, FM810 (RESET).
Circuit Timing (Ex: FM809)
When operating properly with 5V in (for example), V
OUT
will also
be about 5V. When V
IN
starts to fall, V
OUT
will follow it down as
shown. When V
drops below V
, V
OUT
drops to ground ("issues
a RESET") and stays there unless V
IN
operating voltage, approx. 1V. At this point, the supervisor loses
control, and its output may rise, only to again follow V
IN
down to the
ground.
When V
IN
begins to rise, V
OUT
follows it until 1.0V or so is reached,
whereupon the device regains control, V
OUT
is pulled to ground,
etc. When V
IN
rises above V
TH
, V
OUT
comes out of RESET 140 ms
later.
If it is required that a lower value than GND + 1.0V is needed on
RESET signal during V
CC
≤
1V, a 100K resistor may be used on
the device output (to GND for the FM809, to V
CC
for the FM810).
5V
V
TH
1V
GND
5V
V
TH
1V
GND
INPUT
OUTPUT
140ms
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