- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372196 > SP690R 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over PDF資料下載
參數(shù)資料
| 型號： | SP690R |
| 英文描述： | 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
| 中文描述： | 3.0V/3.3V低功耗微處理器監(jiān)控與電池開關(guān)過 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 631K |
| 代理商： | SP690R |
SP690A/692ADS/08 SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over
Copyright 2000 Sipex Corporation
11
L
A
N
G
I
S
S
U
T
A
T
S
V
C
C
V
m
o
d
e
e
n
n
o
c
s
D
T
U
O
V
T
U
O
V
o
8
d
e
e
n
n
n
o
n
C
a
T
O
T
A
M
B
h
g
c
w
u
o
S
l
h
s
P
V
T
T
A
B
V
e
A
V
1
o
h
d
m
6
e
e
o
n
a
h
V
<
n
n
w
s
o
C
a
e
V
T
U
y
b
s
a
,
.
O
t
e
C
s
g
n
o
.
n
s
μ
s
a
C
w
a
C
o
T
T
A
B
-
I
P
s
p
m
o
c
l
.
e
P
s
O
F
P
w
o
c
o
L
T
E
S
E
R
w
o
c
o
L
T
E
S
E
R
)
o
5
0
8
P
S
(
h
g
c
o
L
I
D
W
d
e
a
s
s
m
i
g
o
d
h
c
W
Using a High Capacity Capacitor
as a Backup Power Source
V
BATT
has the same operating voltage range as
V
CC
, and the battery-switchover threshold volt-
ages are typically +20mV centered at V
BATT
,
allowing use of a capacitor and a simple charging
circuit as a backup source (see
Figure 16)
.
If V
CC
is above the reset threshold and V
BATT
is 0.5V above V
CC
, current flows to VOUT and
V
CC
from V
BATT
until the voltage at V
BATT
is
less than 0.5V above V
CC
.
Leakage current through the capacitor charging
diode and the
SP690A/SP802L/SP805L
internal
power diode eventually discharges the capacitor
to V
CC
. Also, if V
CC
and V
BATT
start from 0.5V
above the reset threshold and power is lost at
V
CC
, the capacitor on V
BATT
discharges through
V
CC
until V
BATT
reaches the reset threshold; the
SP690A/SP802L/SP805L
then switches to
battery-backup mode.
Figure 15. Allowable BACKUP-BATTERY Voltages
Figure 14. Input and Output Status in Battery-Backup Mode.
To enter the Battery-Backup mode, V
CC
must be less than the
Reset threshold and less than V
BATT
.
Figure 16. Backup Power Source Using High Capacity
Capacitor
with SP690A/802L/805L and a +5V
±
5% Supply
Figure 17. Backup Power Source Using High Capacity
Capacitor
with SP692A/802M/805M and a +5V
±
10% Supply
V
CC
+5V
GND
V
BATT
V
OUT
RESET
(RESET)*
CONNECT TO
STATIC RAM
TO
μ
P
0.1F
CONNECT
*( ) SP805L only
V
CC
+5V
GND
V
BATT
V
OUT
RESET
(RESET)*
CONNECT TO
STATIC RAM
TO
μ
P
100K
0.1F
CONNECT
*( ) SP805M only
T
E
R
B
A
M
P
U
R
N
M
T
E
U
A
M
B
G
A
I
X
P
T
A
U
L
M
K
O
Y
R
E
]
-
C
V
A
B
T
V
[
A
L
L
0
2
5
9
0
0
6
8
8
P
P
P
S
S
S
0
8
A
M
M
2
2
5
9
0
0
6
8
8
P
P
P
S
S
S
5
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP690RCN | 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP690RCP | 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP690REN | 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP690REP | Trim Pot Accessory; Body Material:Polyester; Mounting Hole Dia:0.330" |
| SP690S | 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP690RCN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP690RCN-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP690RCP | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
| SP690RCP-L | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP690REN | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。