LP2951CT-3.3 查看數據表（PDF） - Signal Processing Technologies
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LP2951CT-3.3 Datasheet PDF : 12 Pages
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TYPICAL APPLICATIONS (continued)
LP2950/LP2951
+V IN
AUX SHUTDOW
INPUT
OFF
ON
3 SD
8
+VIN _______ 5
ERROR
LP2951
10K Ω ..
5 DEGREE SHUTDOWN FLAG
1
V OUT
TEMP
SENSOR
+
AS35
-
GND
4
FB
7
8.2KΩ ..
EXTERNAL CIRCUIT
PROTECTED FROM
OVER TEMPERATURE
(V+ GOES OFF WHEN
TEMP > 125)
Fig 6. System Over Temperature Protection
OR
RELAY
4
20mA
1N4001
0.1uF
8
+V IN
1
V OUT
LP2951
7
FB
+5V
4.7mA
OUTPUT
2
GND
4
1N457
360K Ω ..
Fig. 7
MIN VOLTAGE = 4V
Open Circuit Detector for 4mA to 20mA Current Loop
UNREGULATED INPUT
5
IN
1
V OUT
LP2951
3
V TAP
FB
7
2
SENSE
GND
4
330KΩ ..
27KΩ ..
+
4.7uF
2N5432
5V
OUTPUT
LOAD
50mA
TO
300 mA
Fig 8. 300 mA Regulator with 0.75V
Rev. 11/2/00
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