Re: Component suggestion...

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gareth wrote:
Hi,

I'm trying to build a handheld gaming device using a PIC16F887 with
an
LCD screen.


Although the PIC will run at lower voltages the LCD requires 5V.

I'm guessing this is a TTL serial LCD. FWIW these tend to be rather
expensive for what they consist of.

One of my favourite LCDs is the Nokia 6100 screen. Sparkfun.com does a
nice breakout board and led boost converter for it. It runs at 3.3v
simplifying battery powered design significantly.

I want to power the device with a maximum of 4AAA batteries which
will
provice a voltage of between 4.8V and 6V. I am quite happy to reduce
the number of batteries...

I'm looking for a voltage regulator that will provide me with a
constant output voltage of 5V with an input voltage ranging from 4.8V
to 6V (possibly lower depending on the regulator).

4.8v suggest that a boost converter is required. Again, using 3.3v for
the lot means that a simple LDO will suffice.



The greatest current draw will be the LCD backlight which draws
200mA.


Unfortunately I am unable to solder surface mount components so I
really require something with a DIP package or similar.

There are several places which produce packaged boost converters, Maxim
and National come to mind. I'm sure they will supply in DIP. Surface
mount isn't all that bad with a good iron. Instructables.com has a nice
introductory article for it somewhere.

- --
Brendan Gillatt
brendan {at} brendangillatt {dot} co {dot} uk
http://www.brendangillatt.co.uk
PGP Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBACD7433
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