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參數(shù)資料
| 型號(hào)： | 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)： | 8/9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
Copyright 1999
Rev. 1.2 6/99
8
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
FIGURE 13.
— LOW VOLTAGE MICROPROCESSOR RESET.
A time delayed reset can be accomplished with the addition of C
.
For systems with extremely fast power supply rise times (< 500ns) it
is recommended that the RC
time constant be greater than 5.0μs.
V
TH(MPU)
is the microprocessor reset input threshold.
Overheating of the logic level power MOSFET due to insufficient gate
voltage can be prevented with the above circuit. When the input signal is
below the 4.3 volt threshold of the LX7001C, its output grounds the gate
of the L
2
MOSFET.
FIGURE 15.
— VOLTAGE MONITOR.
FIGURE 16.
— MOSFET LOW VOLTAGE GATE DRIVE PROTECTION.
V
TH(MPU)
IN
1 -
t
DLY
= R C
DLY
In
1
FIGURE 14.
— SWITCHING THE LOAD OFF WHEN
BATTERY REACHES BELOW 4.3V
POWER
SUPPLY
1.2 V
REF
MICROPROCESSOR
CIRCUIT
RESET
C
DLY
R
V
IN
1.2 V
REF
LOAD
RESET
V
IN
POWER
SUPPLY
1.2 V
REF
RESET
V
IN
1.0k
1.2 V
REF
RESET
V
IN
270
4.3V
V
CC
R
L
SMP60N03-10L
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