SPX2950ACN-3.3(2003) Просмотр технического описания (PDF) - Signal Processing Technologies
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SPX2950ACN-3.3 Datasheet PDF : 13 Pages
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TYPICAL APPLICATIONS: (Continued)
4
20mA
1N4001
0.1µF
+5V
4.7mA
8
+V IN
1
V OUT
SPX2951
7
FB
OUTPUT
2
GND
4
1N457
MIN VOLTAGE = 4V
360K Ω
Figure 8. Open Circuit Detector for 4mA to 20mA
Current Loop
UNREGULATED INPUT
8
IN
1
V OUT
SPX2951
6
V TAP
FB
7
2
SENSE
GND
4
330kΩ
27kΩ
+ 4.7µF
2N5432
(2)
5V
OUTPUT
LOAD
50mA
TO
300 mA
Figure 9. 300mA Regulator with 0.75V
IN
FEEDBACK
Q15A
Q3
R11
18kΩ
Q6
Q1
Q42
10
R1
20kΩ
Q40
Q41
4
R30
30kΩ
R2
50kΩ
Q4
Q7
C1
Q5
20pF
R11
20.6kΩ
Q2
R5
180kΩ
R6
140kΩ
R8
31.4kΩ
R10
150
kΩ
R9
27.8kΩ
Q13 Q12
Q11
R3
R4
50kΩ
13kΩ
Q15B
Q9
Q8
1 Q16
Q17 1
2
2
Q20
C2
40pF
R18
20kΩ
3
Q25 3 Q26
Q14 R17
12kΩ
24
Q24
3
OUT
SENSE
R27
VTAP
R28
Q22
R12
110kΩ
R13
100
kΩ
Q18
Q21
R14
350kΩ
R13
100kΩ
Q23
3
Q19
R16
30kΩ R17
Q29
10Ω
Q28
6
R21
8Ω
ERROR
Q37
Q36
R22
150kΩ
Q30 Q31
R23
R24 60kΩ
50kΩ
SHDN
Q38
4
R26
60kΩ
2
Q39
Q35
Q34
5
R25
2.8kΩ
GND
DENOTES CONNECTION ON
LP2950 ONLY
Figure 10. Schematic Diagram
Rev. 3/6/03
SPX2950/SPX2951 150mA Low Dropout Voltage Regulator
12
©Copyright 2003 Sipex Corporation
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