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LM4041 Datasheet(PDF) 15 Page - Micrel Semiconductor

Part # LM4041
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

LM4041 Datasheet(HTML) 15 Page - Micrel Semiconductor

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March 2005
15
M9999-031805
LM4040/4041
Micrel, Inc.
Figure 10. Current Source
* D1 can be any LED, VF = 1.5V to 2.2V at 3mA. D1 may act as an indicator.
D1 will be on if ITHRESHOLD falls below the threshold current, except with I = O.
Figure 11. Precision Floating Current Detector
+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
+15V
R1
2N2905
2N
3964
R2
120k
LM4041-ADJ
FB
+
–
1.24V
R1
IOUT =
1A < IOUT = 100mA



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