fixed qfp footprints' solder mask, added LTC3612 footprint and schematic symbols

schematics/power/regulators.dcm

@@ -6,4 +6,10 @@ K Buck Step-down regulator
 F http://www.ti.com/lit/ds/symlink/lm2596.pdf
 $ENDCMP
 #
+$CMP LTC3612-TSSOP
+D The LTC3612 is a low quiescent current monolithic synchronous buck regulator using a current mode, constant frequency architecture.
+K regulator, dc-dc
+F http://cds.linear.com/docs/en/datasheet/3612fc.pdf
+$ENDCMP
+#
 #End Doc Library

schematics/power/regulators.lib

@@ -22,6 +22,36 @@ X ON 5 -150 -500 200 U 50 50 1 1 I I
 ENDDRAW
 ENDDEF
 #
+# LTC3612-TSSOP
+#
+DEF LTC3612-TSSOP U 0 40 Y Y 1 F N
+F0 "U" 900 50 60 H V C CNN
+F1 "LTC3612-TSSOP" 400 50 60 H V C CNN
+F2 "" 0 0 60 H I C CNN
+F3 "" 0 0 60 H I C CNN
+DRAW
+S 0 0 1000 -1200 0 1 0 F
+X SVin 1 -200 -50 200 R 50 50 1 1 W
+X RUN 2 -200 -700 200 R 50 50 1 1 I
+X PGOOD 3 -200 -500 200 R 50 50 1 1 C
+X MODE 4 -200 -800 200 R 50 50 1 1 I
+X VFB 5 -200 -900 200 R 50 50 1 1 I
+X ITH 6 -200 -1000 200 R 50 50 1 1 I
+X TRACK/SS 7 -200 -600 200 R 50 50 1 1 I
+X DDR 8 1200 -1050 200 L 50 50 1 1 I
+X RT/SYNC 9 -200 -1100 200 R 50 50 1 1 I
+X SGND 10 600 -1400 200 U 50 50 1 1 W
+X PVIN_DRV 20 -200 -150 200 R 50 50 1 1 W
+X PGND-Pad 21 500 -1400 200 U 50 50 1 1 W
+X SW 12 1200 -50 200 L 50 50 1 1 w
+X SW 14 1200 -150 200 L 50 50 1 1 w
+X PVIN 15 -200 -350 200 R 50 50 1 1 W
+X PVIN 16 -200 -250 200 R 50 50 1 1 W
+X SW 17 1200 -250 200 L 50 50 1 1 w
+X SW 19 1200 -350 200 L 50 50 1 1 w
+ENDDRAW
+ENDDEF
+#
 # MC34063
 #
 DEF MC34063 U 0 40 Y Y 1 F N