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| 型號： | LX7001MY |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 電源管理 |
| 英文描述： | TRANSIENT IMMUNE UNDERVOLTAGE SENSING CIRCUIT |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, CDIP8 |
| 封裝： | CERAMIC, DIP-8 |
| 文件頁數(shù)： | 9/9頁 |
| 文件大?。?/td> | 137K |
| 代理商： | LX7001MY |
T
RANSIENT
I
MMUNE
U
NDERVOLTAGE
S
ENSING
C
IRCUIT
LX 7001
PRODUCT DATABOOK 1 9 9 6 / 1 9 9 7
9
Copyright 1999
Rev. 1.2 6/99
P
R O D U C T I O N
D
A T A
S
H E E T
T Y P I C A L A P P L I C A T I O N C I R C U I T S
(Con't.)
FIGURE 17.
— LOW VOLTAGE MICROPROCESSOR RESET
with ADDITIONAL HYSTERESIS.
Comparator hysteresis can be increased with the addition of resistor R
. The
hysteresis equation has been simplified and does not account for the change of
input current I
IN
as V
CC
crosses the comparator threshold. An increase of the
lower threshold
V
will be observed due to I
which is typically 340μA at
4.59V. The equations are accurate to ±10% with R
H
less than 150
and R
L
between 1.5k
and 10k
.
V
H
=
+ 0.02
V
TH (LOWER)
= 340 R
H
x 10
-6
Where: R
H
≤
150
R
L
≥
1.5
≤
10k
4.6 R
H
R
L
TEST DATA
V
TH
(mV)
0
3.4
6.8
6.8
10
10
16
16
34
34
51
51
V
(mV)
20
51
40
81
71
112
100
164
190
327
276
480
R
H
(
)
0
10
20
20
30
30
47
47
100
100
150
150
R
L
(
)
0
1.5
4.7
1.5
2.7
1.5
2.7
1.5
2.7
1.5
2.7
1.5
1.2 V
REF
MICROPROCESSOR
CIRCUIT
RESET
V
IN
POWER
SUPPLY
R
L
R
H
I
IN
PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document
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