Hello All,

Building a small RF code transmitter and receiver units and need help finding a suitable 5v regulator. There seems to be a confusing amount of IC's to choose from. None seemingly ideal.

My problem is the unit will be battery powered from 4 cells. Voltage will range from 6v to 4.4v with current peaking around 40mA.

Can anyone recommend a simple IC (or discrete) circuit to use?

Thanks,
Bob
PS. I need to use 5v as the TX and Rx modules loose coverage at lower voltages (3.3v).