max1834 circuit

I'm sorry I lost some information to you.

I got a
(1) 1.8V / 45mA logic signal ("Hi"),
(2) 2.8V constant voltage source


how can I transform 1.8V / 45mA logic signal into 2.6V / 10mA(Max)
by the simplest circuit (supposed digital transistor)?

Could any expert advise which component I can use ?
Thanks for your kindly help.

Use Maxim low-voltage step-up converters such as MAX1832 or MAX1834 ..
More details at:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2455

Regards,
IanP

Thanks, IanP.
Is there any more easy way to do it ?
Like digital transistor EMD9 (Rohm) or ...?
Your kindly help I'd really appreciate it.

You can build an oscillator based on 2 BJTs (digital transistors without resistor between base and emitter) and put the output (any of collectors) through a voltage doubler with a 2.7V zener diode in parallel with the load ..
This circuit should be able to run of as low as 1.5V ..

Regards,
IanP

I'm sorry I lost some information to you.

I got a
(1) 1.8V / 45mA logic signal ("Hi"),
(2) 2.8V constant voltage source


how can I transform 1.8V / 45mA logic signal into 2.6V / 10mA(Max)
by the simplest circuit (supposed digital transistor)?

To make an invertor is ok.
Could any expert advise which component I can use ?
Thanks for your kindly help.