Power supply for Wavecom Q2403 module

[ChineseDragon]

q2403

I'm desgining a hand-hold set with Q2403 module.It is powered by 1 Li-Ion battery,how to design the switch power supply for the Q2403 module?

The Q2403 module requires instant 2A peak current supply every 4 seconds. I designed a switch power between the battery and the module, but it is difficult to ensure that condition, could someone help me?(the main chip of the power is MAX669)

 

[VVV]

wavecom q2403

I briefly looked at the specs and it seems the module allows direct conection to a Li+ battery. So that makes me question the necessity of the regulator itself.

Anyway, do you know how long the current pulse lasts?
If it is short, you could just use capacitors.

 

[mitesh]

wavecom power supply

HI Friend,

Its easy to have SMPS power supply, Just use MIC2941ABT it has Low Drop Bul Boost Voltage regulator. I am using this from last 2 years for all my wavecom products.

If u want i will email u the schematic

 

[suncq]

q2403 at

if possible, pls email me schematic! thanks!
suncq@126.com

HI Friend,

Its easy to have SMPS power supply, Just use MIC2941ABT it has Low Drop Bul Boost Voltage regulator. I am using this from last 2 years for all my wavecom products.

If u want i will email u the schematic

 

[mitesh]

max1776 schematics

i will uplaod the schematic for wavecom power supply, even u can use LM2576 , its very cheap and u cna get it any where.

 

[tramp]

power wavecom

Hi,
U can use MAX1776 from maxim 0.75$.But I dont understand what problem face wit 2A peak current.Are u working on GPRS mode.

Regards
tramp