參數(shù)資料
型號(hào): SG3546DM
廠商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類: 電源管理
英文描述: 3.3 V UNDERVOLTAGE SENSING CIRCUIT
中文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: 0.150 INCH, ROHS COMPLIANT, PLASTIC, SOIC-8
文件頁(yè)數(shù): 7/7頁(yè)
文件大?。?/td> 156K
代理商: SG3546DM
3.3V U
N D E R V O LTA G E
S
E N S I N G
C
I R C U I T
SG3546
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
7
Copyright 1994
Rev. 1.3 2/96
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 AT I O N C I R C U I T S
FIGURE 8.
— LOW VOLTAGE MICROPROCESSOR RESET
POWER
SUPPLY
1.2 V
REF
RESET
2
1.0k
1
3
FIGURE 9.
— VOLTAGE MONITOR
FIGURE 7.
— SWITCHING THE LOAD OFF WHEN
BATTERY VOLTAGE REACHES BELOW V
TH
A time-delayed reset can be accomplished with the addition of C
DLY
.
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.
POWER
SUPPLY
1.2 V
REF
MICROPROCESSOR
CIRCUIT
RESET
C
DLY
R
2
1
3
1.2 V
REF
LOAD
RESET
2
4
1
t
DLY
= R C
DLY
In
V
TH(MPU)
IN
1 -
1
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