MC1321x Battery options?

[lekkal]

Hi all,

 can I use any two AAA batteries to operate the MC1321x module in low power mode? In MC1321xEVKRM.pdf it is mentioned that Don't use Lithium batteries(page 23). Thank you in advance.



Thanks,
Lekkal

[DSbob]

Lekkal,

Judging from the brief MC1321_ description the voltage (3.6) of some of the Lithium chemistries is just over the spec.  Too bad, the S08QG I have been using seems ideally specified for them and I have not noticed a recommendation against them for that device.  If anyone knows that I would appreciate a warning as I'm about to take the plunge to a propriatary parallel 2xAA solution.

There is a no-recharge Li chem with voltage more like Ni__, ~1.4V, readily available in AAA form but a little low for my analog choice.  So you might design for 2xAAA and experiment, or consider what is best in terms of energy storage, current capability, rechargeability, other components, etc., unless the data sheet specifically warns against that particular chemistry.

In my case I could risk switching to a more "modern" analog part, and avoid the risk of the older part near LVD.

DSBob

[lekkal]

Hi DSbob,

I have designed MC13213 board which has to operate with rechargeable Li-ion battery(3.7V) including charge management(controller) IC. But as per the datasheet of mc1321x the operating voltage is 3.0V(max 3.4V). What kind of circuit should be used to get 3.0V from Li-ion battery(3.7V). Can I give 3.7V to MC1321x through a diode? Thanks in advance.