LM4040AIM3 データシートの表示（PDF） - Micrel

部品番号

コンポーネント説明

メーカー

LM4040AIM3

Precision Micropower Shunt Voltage Reference

Micrel 

LM4040/4041

+15V

LM4041-ADJ

+ FB

–

R1

2N2905

R2

120k

2N

3964

1µA < 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

Figure 11. Precision Floating Current Detector

* 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.

Micrel

LM4040/4041

14

January 2000

Share Link: