LM4041DIM3-1.2TR Micrel, LM4041DIM3-1.2TR Datasheet - Page 15

• Manufacturer Part Number: LM4041DIM3-1.2TR
• Description: the micrel lm4041dim3-1.2 tr is a 1.225v shunt voltage reference....
• Manufacturer: Micrel

March 2005
D1 will be on if I
I
THRESHOLD
* D1 can be any LED, V
1N4002
Figure 11. Precision Floating Current Detector
0 to 20 mA
D2
=
1.24V
R1
THRESHOLD
2N2222
332Ω
D1*
±1%
LM4041-ADJ
R1
22k
R2
= 3.7mA ± 2%
Figure 10. Current Source
F
1N914
λ
= 1.5V to 2.2V at 3mA. D1 may act as an indicator.
FB
falls below the threshold current, except with I = O.
N.C.
1A < I
120k
R2
–
+
LM4041-ADJ
1
2
3
15
+
–
OUT
4N28
I
OUT
FB
= 100mA
2N
3964
=
+15V
1.24V
4
6
5
R1
2N2905
R1
+5V
R4
10M
R3
100k
CMOS
M9999-031805