Looking for a 24V regulator

[yigiter]

28 v to 24v regulator

Hello,
I need a regulator that has the specifications below:

1)if Vin>25V Vout=24V
2)if Vin<25V Vout=Vin

if you could help it would be very appreciated.
Best regards,

Edit:
3)the load current is about 4 amp.

-Erkan

 

[nicleo]

24V Regulator

What's the range of Vin?

 

[yigiter]

Re: 24V Regulator

14<Vin<28V

So: for 14<Vin<25, Vout=Vin
for 25<Vin<28, Vout=24V
i have tried to do it using 7824 but it only works as
for Vin>27V, Vout=24V

 

[nicleo]

Re: 24V Regulator

14<Vin<28V

So: for 14<Vin<25, Vout=Vin
for 25<Vin<28, Vout=24V
i have tried to do it using 7824 but it only works as
for Vin>27V, Vout=24V

Yes. "7824" is a linear regulator. To work properly, it needs certain amount of voltage difference between input voltage and output voltage.

 

[yigiter]

Re: 24V Regulator

is there a way to regulate Vin>25V to 24V?

 

[nicleo]

Re: 24V Regulator

is there a way to regulate Vin>25V to 24V?

Wish the following link will help:
**broken link removed**

Pls update

 

[yigiter]

Re: 24V Regulator

unfortunately,
i have searched it, too.
for 14<Vin<28, Vout=24 and I=4Amp; Maximum Switch Current is too high

isn't there a way as simple as 7824?

 

[nicleo]

24V Regulator

Why did you say the maximum switch current is too 'high'? If I'm not mistaken, you need to supply a 4A load, right?

LM1084 is a low-dropout linear voltage regulator. In order to get 24V output, the minimum input voltage must be (24V + 1.3V) or above.

Pls update.

 

[yigiter]

Re: 24V Regulator

Why did you say the maximum switch current is too 'high'? If I'm not mistaken, you need to supply a 4A load, right?

if you click the "click to show why other parts were not found" button in;
**broken link removed**
you can see the your recommended IC(LM3478) is not suitable for me.

 

[yigiter]

Re: 24V Regulator

i will research the LM1084 and feedback you.

 

[nicleo]

Re: 24V Regulator

if you click the "click to show why other parts were not found" button in;
h**p://webench.national.com/servlet/SS?VinMin=14.0&VinMax=28&O1V=24&O1I=4&op_TA=30
you can see the your recommended IC(LM3478) is not suitable for me.

Yes. You're right. I didn't note that the '5A' is the maximum current rating of the switch.

 

[yigiter]

Re: 24V Regulator

i researched LM1084. it seems useful for me. i will get one and try. thank you for your helps.
Best regards,

-Erkan