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LM317 View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
View to exact match
LM317
Fairchild
Fairchild Semiconductor Fairchild
LM317 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
LM317
Typical Application
VI
Input
Ci
0. 1µF
VI LKMA331177 Vo
Vadj
R1
Iadj
R2 Iadj
Output
Co
1µF
VO = 1.25V (1+ R 2/ R1)+Iadj R2
Figure 5. Programmable Regulator
Ci is required when regulator is located an appreciable distance from power supply filter.
Co is not needed for stability, however, it does improve transient response.
Since IADJ is controlled to less than 100µA, the error associated with this term is negligible in most applications.
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