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Message-ID: <533A04C4.9090801@neurotica.com>
Date: Mon, 31 Mar 2014 20:13:56 -0400
From: Dave McGuire <mcguire AT neurotica DOT com>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] DDPAK footprint?
References: <533910FA DOT 9080906 AT neurotica DOT com> <1396281261 DOT 2178 DOT 4 DOT camel AT AMD64X2 DOT fritz DOT box>
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Reply-To: geda-user AT delorie DOT com


  Perfect...Thanks guys!

         -Dave

On 03/31/2014 11:54 AM, Stefan Salewski wrote:
> On Mon, 2014-03-31 at 02:53 -0400, Dave McGuire wrote:
>>   Hey folks!  Has anyone done a footprint for TI's DDPAK package, like
>> the one used for the LM2673?
> 
> 
> Do you need the rounded center pad?
> If not, input data file like this
> 
> Device = Global
>   author = "Stefan Salewski"
>   email = "mail AT ssalewski DOT de"
>   dist-license = GPL
>   use-license = unlimited
>   date = "31-MAR-2014"
>   elementdir = "./"
>   silkwidth = 10 mil
>   silkoffset = 10 mil
>   textpos = upperleft
>   textorientation = horizontal
>   refdessize = 100
>   mask = 6 mil
>   clearance = 10 mil
>   p1silkmark = ""
>   p1coppermark = "yes"
> 
> # Quad Flat Packages and similar SMD devices like SO, see http://en.wikipedia.org/wiki/QFP
> Device = QFP
>   defaultunit = mm
>   name = "DDPAK" # name of the footprint -- if left empty then filename is used
>   description = "" # detailed description
>   desc = "DDPAK (LM2673)" # short description
>   documentation = "http://www.ti.com/lit/gpn/lm2673" # source of layout, i.e. URI of datasheet
>   pins = 7 # total number of pins
>   rows = 7 # number of pins at side of pin one -- 0 is identical to pins/4
>   width = 16.64 # separation of the two columns of pads -- center to center. If 0 height is used.
>   height = 0 # separation of the two rows of pads -- center to center. If 0 width is used.
>   pitch = 1.27 # distance between adjacent pads -- center to center
>   padthickness = 0.91 # should be smaller than pitch
>   padlength = 2.16
>   centerpadwidth = 10.41 # width of additional center pad with number pins+1 -- use 0 to supress
>   centerpadheight = 10.81 # height of additional center pad with number pins+1 -- use 0 to supress
>   silkbox = "inner" # inner or outer for autosize, custom for explicit size, otherwise no box
>   silkboxwidth = 0 mil # silkbox width, used if silkbox = custom, no box if value is too small
>   silkboxheight = 0 mil # silkbox height, used if silkbox = custom, no box if value is too small
>   ovalpads = "no" # to get ovals use: oval, ovalpads, yes, true, 1
>   p1silkmark = "damage" # mark pin/pad 1: see global section, or for specific shape: circle, damage, slash
>   Generate DDPAK.fp
> 
> gives this footprint:
> 
> Element["" "DDPAK (LM2673)" "DDPAK" "" 0 0 -32756 -30280 0 100 ""]
> (
>   Pad[-35217 -15000 -30295 -15000 3583 2000 4783 "1" "1" ""]
>   Pad[-35217 -10000 -30295 -10000 3583 2000 4783 "2" "2" "square"]
>   Pad[-35217 -5000 -30295 -5000 3583 2000 4783 "3" "3" "square"]
>   Pad[-35217 0 -30295 0 3583 2000 4783 "4" "4" "square"]
>   Pad[-35217 5000 -30295 5000 3583 2000 4783 "5" "5" "square"]
>   Pad[-35217 10000 -30295 10000 3583 2000 4783 "6" "6" "square"]
>   Pad[-35217 15000 -30295 15000 3583 2000 4783 "7" "7" "square"]
>   Pad[0 -787 0 787 40984 2000 42184 "8" "8" "square"]
>   ElementLine[-27004 -17801 -27004 22780 1000]
>   ElementLine[-22026 -22780 27004 -22780 1000]
>   ElementLine[-27004 -17801 -22026 -22780 1000]
>   ElementLine[27004 22780 27004 -22780 1000]
>   ElementLine[27004 22780 -27004 22780 1000]
>   Attribute("name" "DDPAK")
>   Attribute("author" "Stefan Salewski")
>   Attribute("email" "mail AT ssalewski DOT de")
>   Attribute("dist-license" "GPL")
>   Attribute("use-license" "unlimited")
>   Attribute("date" "31-MAR-2014")
>   Attribute("desc" "DDPAK (LM2673)")
>   Attribute("documentation" "http://www.ti.com/lit/gpn/lm2673")
> )
> 
> 


-- 
Dave McGuire, AK4HZ
New Kensington, PA