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LP2950 Datasheet(PDF) 12 Page - Micrel Semiconductor

Part # LP2950
Description  100mA Low-Dropout Voltage Regulator
PDF  14 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

LP2950 Datasheet(HTML) 12 Page - Micrel Semiconductor

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LP2950/2951
Micrel
3-46
February 1999
LP2951
SD
V
ERROR
GND
4
1
8
OUT
+V IN
FB
5
3
470k
470k
+VIN
RESET
R1
R 2
7
VOUT
+
1µF
LP2951
SD
V
ERROR
GND
4
1
8
OUT
+VIN
FB
6
5
3
TAP
SENSE
2
+
1
µF
+VOUT = 5V
+
–
C1
100k
Ω
<5.8V**
+
–
C2
100k
Ω
<6.0V**
+
–
C3
100k
Ω
<6.2V**
39k
Ω
100
k
Ω
1%
1
k
Ω
1%
1
k
Ω
1%
1%
10k
Ω
20k
Ω
R3
+
–
C4
RESET
39k
Ω
6V
LEAD-
ACID
BATTERY
+
C1-C4
LP339
7
Latch Off When Error Flag Occurs
Open Circuit Detector for 4mA to 20mA Current Loop
Regulator with State-of-Charge Indicator
*OPTIONAL LATCH OFF WHEN DROP OUT OCCURS. ADJUST R3 FOR C2
SWITCHING WHEN V
IN
IS 6.0V
**OUTPUTS GO LOW WHEN V
IN
DROPS BELOW DESIGNATED THRESHOLDS.
MIC2951
V
GND
4
1
8
OUT
VIN
FB
7
0.1µF
1N
4001
4
20mA
OUTPUT*
4.7mA
+5V
1
5
4
2
MIN. VOLTAGE
4V
360
1N457
* HIGH FOR
I < 3.5mA
L



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