adjustable positive / negative regulators 3 or 6A

arhi

Member

• Apr 9, 2009

• #1

I'm currently using LM317 and LM337 as adjustable positive and negative regulators but they are only 1.5A rated. Anyone can point me to "bigger" replacement (6A preferable, 3A will do)

 

Techie7

Member

• Apr 9, 2009

• #2

[SIZE=-1]LM338. 5A Positive adjustable regulator from STM.
[/SIZE]

 

S

Speakerguy

Active Member

• Apr 9, 2009

• #3

LM338 is good, so are LT1083 and LM1084.

 

arhi

Member

• Apr 9, 2009

• #4

speakerguy79, thanks ... just found them:
LT1033 (negative 3A regulator)
LT1083 (7.5A positive regulator)

and company ...

never used them before so this is going to be fun

thanks guy's

 

S

Speakerguy

Active Member

• Apr 9, 2009

• #5

Just be sure to follow the output capacitor recommendations. Don't use ceramics or very low ESR electrolytics and tantalums for the output cap. A big electrolytic (>100uF) with .2 to .5 ohms ESR would probably be good.

 

arhi

Member

• Apr 9, 2009

• #6

strange ?!
the datasheet shows 10uF tantalum on the first page ?!
https://www.linear.com/pc/downloadDocument.do?navId=H0,C1,C1003,C1040,C1055,P1283,D3741

 

S

Speakerguy

Active Member

• Apr 9, 2009

• #7

Tantalum is OK, just not a super low ESR type.

 

G

getparts

New Member

• Apr 14, 2009

• #8

Micrel 5A and 7.5A regulators

You can opt for Micrel MI29500 or MIC29750 which are rated 5A and 7.5 A respectively.

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Request parts from Micrel for evaluation.

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