LP2950 Datasheet, PDF (9/10 Pages) National Semiconductor (TI) – Series of Adjustable Micropower Voltage Regulators

CORPORATION
LP2950 / LP2951
TYPICAL APPLICATIONS (continued)
+V_IN
AUX SHUTDOWN
INPUT
OFF
ON
3
SD
8
+V_IN
5
ERROR
10K Ω
5 DEGREE SHUTDOWN FLAG
LP2951
TEMP
SENSOR
+
AS35
–
GND
4
1
V_OUT
FB
7
8.2K Ω
EXTERNAL CIRCUIT
PROTECTED FROM
OR
OVER TEMPERATURE
(V+ GOES OFF WHEN
TEMP > 125)
RELAY
SYSTEM OVER TEMPERATURE PROTECTION CIRCUIT
1F-48
4
20mA
IN4001
0.1 µF
8
+V_IN
1
V_OUT
LP2951
GND
4
7
FB
IN457
+5v
4.7mA
OUTPUT
2
360K Ω
MIN VOLTAGE = 4V
OPEN CIRCUIT DETECTOR FOR 4mA TO 20mA CURRENT LOOP
1F-49
UNREGULATED INPUT
5
IN
1
V_OUT
LP2951
3
V_TAP
FB
7
2
SENSE
GND
4
330K Ω
27K Ω
2N5432
+
4.7µF
5V
OUTPUT
LOAD 50mA
TO 300mA
300mA REGULATOR WITH 0.75 DROPOUT
1F-50
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