Hello guys
I need circuit with LT 1073 IC to make my own diy power bank, so need circuit with 5V and minimum 1A.
No different to step up or step down circuit, I also have charger for batteries so don't need exactly power bank circuit.
I have about 30 1.2V 1500mAh ni-mh rechargeable batteries to use in this project.
Thank you

 

So what do you need?
Just use the appropriate circuit in the data sheet with the part value and types recommended. Any shortcuts in that area will likely result in a circuit the doesn't work properly.
And make sure you lay it out on a board with a copper ground plane, short connections, and proper decoupling capacitors.
Switching regulators are fussy about layout so don't try it with a plug-in breadboard.

I suggest you get Ltspice and simulate the circuit to get familiar with its operation.
If you put the LT1073 from the Component Power Products selection in a blank schematic and right-click on it, you will get the following:


Select the macromodel test fixture and it will come up with a demo schematic you can use for initial testing.
After getting familiar with its operation, you can then change it, if needed, to the configuration you want, and simulate that.
Here's the simulation of that test fixture circuit.
You can adjust the value of R1 or R2 to get the 5V output voltage you want. For example R2 = 22k gives close to 5V.

 

Thank you very useful
But I need circuit with input power ni-mh batteries in Series or parallel model with output 5V and 1A or higher.
That datasheet only have circuit with one cell battery input and 5V and 30mA output.

 

.....That datasheet only have circuit with one cell battery input and 5V and 30mA output.

If you want 1A output you will need to use a different chip or add a boost transistor such as shown here from the data sheet:

It can be designed to operate from a higher input voltage of course (up to 30V).

 

Umm thank you
So for 5V 1A I can make ni-mh pack in series mode to increase the input voltage for circuit.
But if I use 10 cells in series mode it's give me 12V 1500mAh so if I connect this battery pack to this circuit, circuit give me 5V 1A in output?
How I can measure output capacity of the circuit with this battery pack?
* I have 30 1.2V 1500mAh ni-mh batteries to make series or parallel battery pack to supply input voltage circuit
* I just wanna use this chip (LT 1073)

 

I thinking about make Parallel battery pack with 10 cells 1.2V or 1.7V with 15000mAh and connect it to this circuit for increase the output Amperage.
Is it possible to?

 

........How I can measure output capacity of the circuit with this battery pack?
* I have 30 1.2V 1500mAh ni-mh batteries to make series or parallel battery pack to supply input voltage circuit

The maximum total energy in your batteries is approximately 30*1.2*1500mAh = 54Wh.
Assuming 85% efficiency for the converter, the output would deliver 1A @ 5V (5W) for (54*.85) / 5 = 9.18 hours.
Practically I would say you would get about 7-8 hours of operation.

 

I thinking about make Parallel battery pack with 10 cells 1.2V or 1.7V with 15000mAh and connect it to this circuit for increase the output Amperage.
Is it possible to?

Thank you
What about this it's possible to use this circuit for it with this parallel battery pack?

 

I thinking about make Parallel battery pack with 10 cells 1.2V or 1.7V with 15000mAh and connect it to this circuit for increase the output Amperage.
Is it possible to?

The maximum output amperage is determined by the converter.
More batteries just allows it to deliver the amperage longer.

 

So you think just one circuit is there to use for this?
And how I can make 3V battery pack with high amperage?
Do you have any different ideas about this project?
So much thank you

 

So you think just one circuit is there to use for this?
And how I can make 3V battery pack with high amperage?
Do you have any different ideas about this project?
So much thank you

It's not entirely clear to me what you are trying to achieve with all these batteries.
What exactly do you want to use this "power pack" for?
If I better understand you goal, then I can make better suggestions.

 

I wanna make something like portable psu (power bank) with 5V 1A output and high capacity.
And I wanna use ni-mh battery pack (parallel) to supply input voltage for circuit.

 

I wanna make something like portable psu (power bank) with 5V 1A output and high capacity.
And I wanna use ni-mh battery pack (parallel) to supply input voltage for circuit.

also I got this

 

That will not give you 1A output, as I previously noted.

 

You're right but this circuit you send give 6V 1A I want 5V 1A.
what should I do?
Please give me useful circuit

 

You're right but this circuit you send give 6V 1A I want 5V 1A.
what should I do?................

First thing you should do is learn how to read a data sheet so you understand how the circuit works.
You should not try to design a circuit without knowing how it works.

This is on page 8:

 

Thank you
So you should learn more about it.
Where can I learn more about it?

 

And also please give me program name who can simulate any kind of circuit with all components collection like real.
LTspice IV don't exactly work because in program I find circuit that give me 5V 1A in output but you tell me that's not work.

 

You read and understand that data sheet.
That's how you learn about it.

LTspice will simulate any circuit you design.

Here's a basic explanation of switching supplies.