diff --git a/library/ac-dc.lib b/library/ac-dc.lib
index 2a68f956..21555056 100644
--- a/library/ac-dc.lib
+++ b/library/ac-dc.lib
@@ -359,6 +359,98 @@ X HV 8 0 400 100 D 50 50 1 1 I
 ENDDRAW
 ENDDEF
 #
+# LT1248
+#
+DEF LT1248 U 0 40 Y Y 1 F N
+F0 "U" 300 950 50 H V C CNN
+F1 "LT1248" 300 850 50 H V C CNN
+F2 "" 0 -200 50 H I C CNN
+F3 "" 0 -300 50 H I C CNN
+$FPLIST
+ SOIC*3.9x9.9mm*Pitch1.27mm*
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -500 800 500 -800 0 1 10 f
+X GND 1 0 -900 100 U 50 50 1 1 W
+X PKLIM 2 600 100 100 L 50 50 1 1 I
+X CAOUT 3 600 500 100 L 50 50 1 1 O
+X ISENSE 4 600 300 100 L 50 50 1 1 I
+X MOUT 5 600 700 100 L 50 50 1 1 I
+X IAC 6 -600 100 100 R 50 50 1 1 I
+X VAOUT 7 -600 700 100 R 50 50 1 1 O
+X OVP 8 -600 300 100 R 50 50 1 1 I
+X VREF 9 -600 -100 100 R 50 50 1 1 w
+X EN/SYNC 10 -600 -300 100 R 50 50 1 1 I
+X VSENSE 11 -600 500 100 R 50 50 1 1 I
+X RSET 12 -600 -600 100 R 50 50 1 1 P
+X SS 13 -600 -700 100 R 50 50 1 1 P
+X CSET 14 -600 -500 100 R 50 50 1 1 P
+X VCC 15 0 900 100 D 50 50 1 1 W
+X GTDR 16 600 -100 100 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# LT1249
+#
+DEF LT1249 U 0 40 Y Y 1 F N
+F0 "U" 250 650 50 H V C CNN
+F1 "LT1249" 250 550 50 H V C CNN
+F2 "" 0 -100 50 H I C CNN
+F3 "" 0 -200 50 H I C CNN
+$FPLIST
+ SOIC*3.9x4.9mm*Pitch1.27mm*
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -500 500 500 -500 0 1 10 f
+X GND 1 0 -600 100 U 50 50 1 1 W
+X CAOUT 2 -600 0 100 R 50 50 1 1 O
+X MOUT 3 -600 -200 100 R 50 50 1 1 I
+X IAC 4 -600 -400 100 R 50 50 1 1 I
+X VAOUT 5 -600 400 100 R 50 50 1 1 O
+X VSENSE 6 -600 200 100 R 50 50 1 1 I
+X VCC 7 0 600 100 D 50 50 1 1 W
+X GTDR 8 600 0 100 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# LT1509
+#
+DEF LT1509 U 0 40 Y Y 1 F N
+F0 "U" 300 950 50 H V C CNN
+F1 "LT1509" 300 850 50 H V C CNN
+F2 "" -150 -100 50 H I C CNN
+F3 "" -150 -200 50 H I C CNN
+$FPLIST
+ SOIC*7.5x12.8mm*Pitch1.27mm*
+ DIP*W7.62mm*
+$ENDFPLIST
+DRAW
+S -500 800 500 -800 0 1 10 f
+X GTDR1 1 600 -100 100 L 50 50 1 1 O
+X GND2 2 -100 -900 100 U 50 50 1 1 W
+X GND1 3 0 -900 100 U 50 50 1 1 W
+X CSET 4 -600 -300 100 R 50 50 1 1 P
+X PKLIM 5 600 700 100 L 50 50 1 1 I
+X CAOUT 6 600 100 100 L 50 50 1 1 O
+X ISENSE 7 600 300 100 L 50 50 1 1 I
+X MOUT 8 600 500 100 L 50 50 1 1 I
+X IAC 9 -600 100 100 R 50 50 1 1 I
+X VAOUT 10 -600 700 100 R 50 50 1 1 O
+X GTDR2 20 600 -300 100 L 50 50 1 1 O
+X OVP 11 -600 300 100 R 50 50 1 1 I
+X VREF 12 -600 -100 100 R 50 50 1 1 w
+X SS2 13 -600 -600 100 R 50 50 1 1 P
+X VSENSE 14 -600 500 100 R 50 50 1 1 I
+X RSET 15 -600 -400 100 R 50 50 1 1 P
+X SS1 16 -600 -700 100 R 50 50 1 1 P
+X VCC 17 0 900 100 D 50 50 1 1 W
+X VC 18 600 -700 100 L 50 50 1 1 I
+X RAMP 19 600 -500 100 L 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
 # UC3846X-D08-T
 #
 DEF UC3846X-D08-T U 0 40 Y Y 1 F N