diff --git a/library/dc-dc.lib b/library/dc-dc.lib
index 65f92a54..c582fe5d 100644
--- a/library/dc-dc.lib
+++ b/library/dc-dc.lib
@@ -2237,6 +2237,51 @@ X Agnd 8 0 -400 100 U 50 50 1 1 W
 ENDDRAW
 ENDDEF
 #
+# MCP16331x-E-CH
+#
+DEF MCP16331x-E-CH U 0 20 Y Y 1 F N
+F0 "U" -310 250 50 H V L CNN
+F1 "MCP16331x-E-CH" 430 250 50 H V C CNN
+F2 "TO_SOT_Packages_SMD:SOT-23-6" 0 -400 50 H I C CNN
+F3 "" -1200 650 50 H I C CNN
+$FPLIST
+ SOT*23*
+$ENDFPLIST
+DRAW
+S -300 200 300 -200 0 1 10 f
+X BOOST 1 400 100 100 L 50 50 1 1 I
+X GND 2 0 -300 100 U 50 50 1 1 W
+X VFB 3 -400 0 100 R 50 50 1 1 I
+X EN 4 -400 100 100 R 50 50 1 1 I
+X VIN 5 0 300 100 D 50 50 1 1 W
+X SW 6 400 -100 100 L 50 50 1 1 w
+ENDDRAW
+ENDDEF
+#
+# MCP16331x-E-MNY
+#
+DEF MCP16331x-E-MNY U 0 20 Y Y 1 F N
+F0 "U" -310 250 50 H V L CNN
+F1 "MCP16331x-E-MNY" 460 250 50 H V C CNN
+F2 "Housings_DFN_QFN:DFN-8-1EP_3x2mm_Pitch0.5mm" 0 -400 50 H I C CNN
+F3 "" -1200 650 50 H I C CNN
+$FPLIST
+ DFN*1EP*3x2mm*Pitch0.5mm*
+$ENDFPLIST
+DRAW
+S -300 200 300 -200 0 1 10 f
+X SW 1 400 -100 100 L 50 50 1 1 w
+X EN 2 -400 100 100 R 50 50 1 1 I
+X NC 3 300 0 100 L 50 50 1 1 N N
+X NC 4 -300 0 100 R 50 50 1 1 N N
+X GND 5 0 -300 100 U 50 50 1 1 W
+X VFB 6 -400 -100 100 R 50 50 1 1 I
+X BOOST 7 400 100 100 L 50 50 1 1 I
+X VIN 8 0 300 100 D 50 50 1 1 W
+X EP 9 100 -300 100 U 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
 # MCP1640-CH
 #
 DEF MCP1640-CH U 0 40 Y Y 1 F N