LM4041 データシートの表示（PDF） - Micrel

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LM4041

Precision Micropower Shunt Voltage Reference

Micrel 

LM4040/4041

+15V

+ FB

LM4041-ADJ –

R1

2N2905

R2

120k

2N

3964

1A < IOUT = 100mA

I OUT

=

1.24V

R1

Figure 10. Current Source

0 to 20 mA

D2

1N4002

R1

332Ω

±1%

FB

1N914

+

LM4041-ADJ

–

2N2222

R2

22k

1

6

D1*

λ

2

5

N.C. 3

ITHRESHOLD =

1.24V

R1

= 3.7mA ± 2%

4

4N28

+5V

R3

100k

CMOS

R4

10M

* 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

Micrel, Inc.

March 2005

15

M9999-031805

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