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TYPICAL APPLICATIONS (continued)
SPX2975
+VIN
AUX SHUTDOWN
OFF
ON
3 SD
8
+VIN
_______ 5
ERROR
SPX2975
1
V OUT
GND
FB
+
4
7
TEMP
SENSOR
SPX35
8.2KΩ
10KΩ
5 DEGREE SHUTDOWN FLAG
EXTERNAL CIRCUIT
PROTECTED
FORVOEMR TEMPERATURE
(V+ GOES OFF
WTEHMEPN > 125)
System Over Temperature Protection Circuit
OR
RELAY
4
20mA
1N4001
0.1uF
8
+V IN
SPX2975
1
VOUT
7
FB
+5V
4.7mA
OUTPUT
2
GND
4
1N457
360K Ω ..
MIN VOLTAGE = 4V
Open Circuit Detector for 4mA to 20mA Current Loop
UNREGULATED INPUT
5
IN
1
VOUT
SPX2975
330KΩ ..
27KΩ ..
2N5432
3
V TAP
FB
7
2
SENSE
GND
4
+
4.7uF
5V
OUTPUT
LOAD
50mA
TO
300 mA
300 mA Regulator with 0.75 Dropout
Rev. 10/30/00