LM431A 查看數據表（PDF） - Fairchild Semiconductor

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LM431A

Programmable Shunt Regulator

Fairchild Semiconductor 

Typical Application

VO = ⎝⎛1 + RR-----12-⎠⎞ Vref

LM431A/B/C

Figure 11. Shunt Regulator

LM431A/LM431B/LM431C

VO

=

Vre

f

⎛

⎝

1

+

RR-----12-⎠⎞

LM7805/MC7805

VO = ⎝⎛1 + RR-----12-⎠⎞ Vref

LM431A/B/C

LM431A/B/C

Figure 12. Output Control for

Three--Te r- minal Fixed Regulator

Figure 13. High Current Shunt Regulator

LM431A/B/C

Figure 14. Current Limit or Current Source

LM431A/B/C

Figure 15. Constant-Current Sink

7

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