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LP2950AT-3.0 데이터 시트보기 (PDF) - Signal Processing Technologies
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LP2950AT-3.0
100 mA Low Dropout Voltage Regulators
Signal Processing Technologies
LP2950AT-3.0 Datasheet PDF : 12 Pages
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TYPICAL APPLICATIONS
(continued)
LP2950/LP2951
+ 6V
SEALED
LEAD-
120K
Ω
..
1.5K
Ω
..
ACID
BATTERY
SOURCE
FB
AS385
1N457
FOR 5.5 V
400K
Ω
..
100K
Ω
..
3
SD
8
+V
IN
LP2951
1
V
OUT
SENSE
2
GND
4
MAIN V-
+
1uF
MEMORY V+
20K
Ω
..
NI-CAD
BACKUP
BATTERY
Fig.4 Low Battery Disconnect
39k
Ω
..
RESET
8
5 __+_V_
I
_
N
_
ERROR
2
SENSE
1
V
OUT
-
LP2951
3
C4
SD
7
+
FB
39k
Ω
..
GND
TAP
4
6
+V
OUT
= 5V
+
1uF
1%
6V
LEAD-
ACID
1%
BATTERY
100k
Ω
..
-
C1
+
1k
Ω
..
-
C2
+
1%
1k
Ω
..
-
C3
+
10k
Ω
..
R
3
1%
20k
Ω
..
100k
Ω
..
100k
Ω
..
<5.8V**
100k
Ω
..
<6.0V**
<6.2V**
* OPTIONAL LATCH OFF WHEN DROPOUT OCCURS. ADJUST R3 FOR C2 SWITCHING WHEN
V
IN
IS 6.0V
* OUTPUTS GO LOW WHEN V
IN
DROPS BELOW DESGNATED THRESHHOLDS
Fig. 5 Regulator with State-of-Charge Indicator
Rev. 11/2/00
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