Power supply for GPS module! . . .

[DineZ94]

Hai guys . . Am currently having GPS Module SKG13 . . Am going to connect GPS with PIC16F877A in breadboard . . My doubt is how can i give power supply to GPS module as i dont have a 12v adapter for GPS . . Am using a 12v battery power supply for microcontroller and lcd which i have converted to 5v . . Is there any option that i can connect this 5v or 12v from this battery (OR) breadboard to GPS module . . Thanks in advance . .

 

[Altaero]

Why do you think you need 12v?
As datasheet states:
Regulated power for the SKG13C (SKG13BL) is required. The input voltage Vcc should be 3.0V to 4.2V range, current is no less than 100mA.
You cannot use 5v directly, but you can put an LDO to convert 5v to 3.6v.

 

[DineZ94]

Why do you think you need 12v?
As datasheet states:
Regulated power for the SKG13C (SKG13BL) is required. The input voltage Vcc should be 3.0V to 4.2V range, current is no less than 100mA.
You cannot use 5v directly, but you can put an LDO to convert 5v to 3.6v.

May I know whats that LDO and how to convert . . As i have converted 12v to 5v , can i again convert that 5v to 3.6v with the LDO ?? sry if thats a silly question :wink:

 

[ads-ee]

May I know whats that LDO and how to convert . . As i have converted 12v to 5v , can i again convert that 5v to 3.6v with the LDO ?? sry if thats a silly question :wink:

Yes you can use another LDO to convert the 5V to 3.3V (3.3V is more likely what is needed than 3.6V, personally I have not run across any 3.6V devices).

 

[Altaero]

LDO is an acronym for Low-DropOut - this is a type of linear voltage regulators with (surprisingly) low dropout, or minimal voltage drop between input and output.
Yes, 3.3V are much more common, it's better to use them (nevertheless 3.6V is still possible). In fact, you can use any voltage regulator within specified range.
Also as I understood from this particular range, this module perfectly suits for Li-Ion batteries, because their voltage ranges are almost the same.

 

[ads-ee]

3.3V is not just common. It's the standard voltage. What you are proposing is over the typical value. Yes the operating range of Vcc is 3.0-4.2V, but that doesn't mean you should run it higher than 3.3V and if you do the "test conditions" used will no longer be valid.

From the datasheet.

 

[Altaero]

3.3V is not just common. It's the standard voltage. What you are proposing is over the typical value. Yes the operating range of Vcc is 3.0-4.2V, but that doesn't mean you should run it higher than 3.3V and if you do the "test conditions" used will no longer be valid.

From the datasheet.
View attachment 138458

Yes, you're right. I should have viewed datasheet more carefully.