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LM4040 Datasheet(PDF) 14 Page - Micrel Semiconductor

Part # LM4040
Description  Precision Micropower Shunt Voltage Reference
PDF  16 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

LM4040 Datasheet(HTML) 14 Page - Micrel Semiconductor

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LM4040/4041
Micrel
LM4040/4041
14
January 2000
+15V
R1
2N2905
2N
3964
R2
120k
LM4041-ADJ
FB
+
–
1.24V
R1
IOUT =
1µA < IOUT = 100mA
+5V
R3
100k
CMOS
R4
10M
1
2
3
6
5
4
4N28
N.C.
R2
22k
LM4041-ADJ
+
–
R1
332
Ω
±1%
FB
1N914
2N2222
D1*
λ
I
THRESHOLD =
= 3.7mA
± 2%
1.24V
R1
D2
1N4002
0 to 20 mA
Figure 10. Current Source
Figure 11. Precision Floating Current Detector
* D1 can be any LED, V
F = 1.5V to 2.2V at 3mA. D1 may act as an indicator. D1 will
be on if I
THRESHOLD falls below the threshold current, except with I = O.



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