component
LD1117D33CTR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
symbol: give the SO-8 its real 8-pin pinout. The page shipped the 3-pin DPAK/TO-220 pinout (GND/VOUT/VIN) on an 8-pad SOIC-8 footprint, leaving pads 4-8 as copper no symbol pin could reach. Taken from Figure 2 of the LD1117 datasheet, which lists D33CTR under SO-8: 1 GND, 2 VOUT, 3 VOUT, 4 VIN, 5 NC, 6 VOUT, 7 VOUT, 8 NC. Note the automated extraction of this same datasheet returned '2-7 all VOUT, 8 VIN' and flagged itself review_required; reading the figure directly showed VIN is pin 4 and pins 5 and 8 are NC, so that reading would have wired the input to a no-connect.
4 files changed
+123−105
ld1117d33ctr.kicad_sym+27−7@@ -1,25 +1,45 @@ (kicad_symbol_lib (version 20211014) (generator ds2sf_rect) (symbol "LD1117D33CTR" (in_bom yes) (on_board yes)- (property "Reference" "U" (at 0 5.08 0) (effects (font (size 1.27 1.27))))- (property "Value" "LD1117D33CTR" (at 0 -7.62 0) (effects (font (size 1.27 1.27))))+ (property "Reference" "U" (at 0 7.62 0) (effects (font (size 1.27 1.27))))+ (property "Value" "LD1117D33CTR" (at 0 -10.16 0) (effects (font (size 1.27 1.27)))) (property "Footprint" "" (at 0 0 0) (effects (font (size 1.27 1.27)) hide)) (symbol "LD1117D33CTR_0_1"- (rectangle (start -12.70 2.54) (end 12.70 -5.08)+ (rectangle (start -12.70 5.08) (end 12.70 -7.62) (stroke (width 0.254) (type default)) (fill (type background))) ) (symbol "LD1117D33CTR_1_1"- (pin power_in line (at -17.78 0.00 0) (length 5.08)+ (pin power_in line (at -17.78 2.54 0) (length 5.08) (name "GND" (effects (font (size 1.27 1.27)))) (number "1" (effects (font (size 1.27 1.27)))) )- (pin power_out line (at -17.78 -2.54 0) (length 5.08)+ (pin power_out line (at -17.78 0.00 0) (length 5.08) (name "VOUT" (effects (font (size 1.27 1.27)))) (number "2" (effects (font (size 1.27 1.27)))) )- (pin power_in line (at 17.78 0.00 180) (length 5.08)- (name "VIN" (effects (font (size 1.27 1.27))))+ (pin power_out line (at -17.78 -2.54 0) (length 5.08)+ (name "VOUT" (effects (font (size 1.27 1.27)))) (number "3" (effects (font (size 1.27 1.27)))) )+ (pin power_in line (at -17.78 -5.08 0) (length 5.08)+ (name "VIN" (effects (font (size 1.27 1.27))))+ (number "4" (effects (font (size 1.27 1.27))))+ )+ (pin no_connect line (at 17.78 2.54 180) (length 5.08)+ (name "NC" (effects (font (size 1.27 1.27))))+ (number "8" (effects (font (size 1.27 1.27))))+ )+ (pin power_out line (at 17.78 0.00 180) (length 5.08)+ (name "VOUT" (effects (font (size 1.27 1.27))))+ (number "7" (effects (font (size 1.27 1.27))))+ )+ (pin power_out line (at 17.78 -2.54 180) (length 5.08)+ (name "VOUT" (effects (font (size 1.27 1.27))))+ (number "6" (effects (font (size 1.27 1.27))))+ )+ (pin no_connect line (at 17.78 -5.08 180) (length 5.08)+ (name "NC" (effects (font (size 1.27 1.27))))+ (number "5" (effects (font (size 1.27 1.27))))+ ) ) ) )
ld1117d33ctr.lbr+34−23@@ -50,18 +50,18 @@ <layer number="98" name="Guide" color="6" fill="1" visible="yes" active="yes"/> </layers> <library>-<description></description>+<description>STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8</description> <packages>-<package name="LD1117D33CTR">- <description>LD1117D33CTR</description>- <smd name="1" x="-2.4750" y="1.9050" dx="1.9500" dy="0.6000" layer="1"/>- <smd name="2" x="-2.4750" y="0.6350" dx="1.9500" dy="0.6000" layer="1"/>- <smd name="3" x="-2.4750" y="-0.6350" dx="1.9500" dy="0.6000" layer="1"/>- <smd name="4" x="-2.4750" y="-1.9050" dx="1.9500" dy="0.6000" layer="1"/>- <smd name="5" x="2.4750" y="-1.9050" dx="1.9500" dy="0.6000" layer="1"/>- <smd name="6" x="2.4750" y="-0.6350" dx="1.9500" dy="0.6000" layer="1"/>- <smd name="7" x="2.4750" y="0.6350" dx="1.9500" dy="0.6000" layer="1"/>- <smd name="8" x="2.4750" y="1.9050" dx="1.9500" dy="0.6000" layer="1"/>+<package name="SOIC-8_3.9x4.9mm_P1.27mm">+ <description>SOIC-8, 3.9 x 4.9 mm, 1.27 mm pitch</description>+ <smd name="1" x="-2.4750" y="1.9050" dx="1.9500" dy="0.6000" layer="1" roundness="50"/>+ <smd name="2" x="-2.4750" y="0.6350" dx="1.9500" dy="0.6000" layer="1" roundness="50"/>+ <smd name="3" x="-2.4750" y="-0.6350" dx="1.9500" dy="0.6000" layer="1" roundness="50"/>+ <smd name="4" x="-2.4750" y="-1.9050" dx="1.9500" dy="0.6000" layer="1" roundness="50"/>+ <smd name="5" x="2.4750" y="-1.9050" dx="1.9500" dy="0.6000" layer="1" roundness="50"/>+ <smd name="6" x="2.4750" y="-0.6350" dx="1.9500" dy="0.6000" layer="1" roundness="50"/>+ <smd name="7" x="2.4750" y="0.6350" dx="1.9500" dy="0.6000" layer="1" roundness="50"/>+ <smd name="8" x="2.4750" y="1.9050" dx="1.9500" dy="0.6000" layer="1" roundness="50"/> <polygon width="0.1200" layer="21"> <vertex x="-2.6000" y="2.4700"/> <vertex x="-2.8400" y="2.8000"/>@@ -86,29 +86,40 @@ </packages> <symbols> <symbol name="LD1117D33CTR">- <wire x1="-12.7" y1="2.54" x2="12.7" y2="2.54" width="0.254" layer="94"/>- <wire x1="12.7" y1="2.54" x2="12.7" y2="-5.08" width="0.254" layer="94"/>- <wire x1="12.7" y1="-5.08" x2="-12.7" y2="-5.08" width="0.254" layer="94"/>- <wire x1="-12.7" y1="-5.08" x2="-12.7" y2="2.54" width="0.254" layer="94"/>- <text x="0" y="5.08" size="1.27" layer="95" align="bottom-center">>NAME</text>- <text x="0" y="-7.62" size="1.27" layer="96" align="top-center">>VALUE</text>- <pin name="GND" x="-17.78" y="0" length="middle" direction="pwr"/>- <pin name="VOUT" x="-17.78" y="-2.54" length="middle" direction="out"/>- <pin name="VIN" x="17.78" y="0" length="middle" direction="pwr" rot="R180"/>+ <description>STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8</description>+ <wire x1="-12.7" y1="5.08" x2="12.7" y2="5.08" width="0.254" layer="94"/>+ <wire x1="12.7" y1="5.08" x2="12.7" y2="-7.62" width="0.254" layer="94"/>+ <wire x1="12.7" y1="-7.62" x2="-12.7" y2="-7.62" width="0.254" layer="94"/>+ <wire x1="-12.7" y1="-7.62" x2="-12.7" y2="5.08" width="0.254" layer="94"/>+ <text x="0.0000" y="7.6200" size="1.27" layer="95" align="center">>NAME</text>+ <text x="0.0000" y="-10.1600" size="1.27" layer="96" align="center">>VALUE</text>+ <pin name="GND" x="-17.78" y="2.54" length="middle" direction="pwr"/>+ <pin name="VOUT" x="-17.78" y="0" length="middle" direction="out"/>+ <pin name="VOUT@2" x="-17.78" y="-2.54" length="middle" direction="out"/>+ <pin name="VIN" x="-17.78" y="-5.08" length="middle" direction="pwr"/>+ <pin name="NC" x="17.78" y="2.54" length="middle" direction="io" rot="R180"/>+ <pin name="VOUT@3" x="17.78" y="0" length="middle" direction="out" rot="R180"/>+ <pin name="VOUT@4" x="17.78" y="-2.54" length="middle" direction="out" rot="R180"/>+ <pin name="NC@2" x="17.78" y="-5.08" length="middle" direction="io" rot="R180"/> </symbol> </symbols> <devicesets> <deviceset name="LD1117D33CTR" prefix="U">- <description></description>+ <description>STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8</description> <gates> <gate name="G$1" symbol="LD1117D33CTR" x="0" y="0"/> </gates> <devices>- <device name="" package="LD1117D33CTR">+ <device name="" package="SOIC-8_3.9x4.9mm_P1.27mm"> <connects> <connect gate="G$1" pin="GND" pad="1"/> <connect gate="G$1" pin="VOUT" pad="2"/>- <connect gate="G$1" pin="VIN" pad="3"/>+ <connect gate="G$1" pin="VOUT@2" pad="3"/>+ <connect gate="G$1" pin="VIN" pad="4"/>+ <connect gate="G$1" pin="NC" pad="8"/>+ <connect gate="G$1" pin="VOUT@3" pad="7"/>+ <connect gate="G$1" pin="VOUT@4" pad="6"/>+ <connect gate="G$1" pin="NC@2" pad="5"/> </connects> <technologies> <technology name="">
pads.json+32−69@@ -21,52 +21,15 @@ "symbol_pins": [ "1", "2",- "3"+ "3",+ "4",+ "5",+ "6",+ "7",+ "8" ], "paste_apertures": 0,- "issues": [- {- "kind": "pin-not-in-symbol",- "pin": "TAB",- "name": "VOUT",- "detail": "page.json describes pin \"TAB\" (VOUT) from the datasheet, but the symbol has no such pin, so nothing can connect to it"- },- {- "kind": "pad-has-no-pin",- "pad": "4",- "thermal": false,- "described_in_page": false,- "detail": "footprint pad \"4\" is in copper but the SYMBOL has no pin for it"- },- {- "kind": "pad-has-no-pin",- "pad": "5",- "thermal": false,- "described_in_page": false,- "detail": "footprint pad \"5\" is in copper but the SYMBOL has no pin for it"- },- {- "kind": "pad-has-no-pin",- "pad": "6",- "thermal": false,- "described_in_page": false,- "detail": "footprint pad \"6\" is in copper but the SYMBOL has no pin for it"- },- {- "kind": "pad-has-no-pin",- "pad": "7",- "thermal": false,- "described_in_page": false,- "detail": "footprint pad \"7\" is in copper but the SYMBOL has no pin for it"- },- {- "kind": "pad-has-no-pin",- "pad": "8",- "thermal": false,- "described_in_page": false,- "detail": "footprint pad \"8\" is in copper but the SYMBOL has no pin for it"- }- ],+ "issues": [], "pads": [ { "pad": "1",@@ -90,7 +53,7 @@ "pin": "1", "name": "GND", "type": "power_in",- "description": "Ground / common return pin. Reference for the internal band-gap and the 3.3 V output. Quiescent current returns through this pin.",+ "description": "Ground / reference for the fixed 3.3 V output.", "is_pin1": true, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",@@ -120,7 +83,7 @@ "pin": "2", "name": "VOUT", "type": "power_out",- "description": "Regulated 3.3 V output (typ. 3.3 V, tolerance +/-1% at 25 degC). Sources up to 800 mA continuous; requires a 10 uF minimum output capacitor for loop stability. Electrically common with the DPAK tab.",+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat.", "is_pin1": false, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",@@ -148,9 +111,9 @@ ], "thermal": false, "pin": "3",- "name": "VIN",- "type": "power_in",- "description": "Unregulated DC input supply. Operating range up to 15 V (18 V absolute max when IOUT < 20 mA); a 100 nF input decoupling capacitor is recommended. Dropout is typically 1.1 V at 800 mA load.",+ "name": "VOUT",+ "type": "power_out",+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat.", "is_pin1": false, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",@@ -178,13 +141,13 @@ ], "thermal": false, "pin": "4",- "name": null,- "type": null,- "description": null,+ "name": "VIN",+ "type": "power_in",+ "description": "Unregulated input supply.", "is_pin1": false, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",- "meaning": null,+ "meaning": "page.json:component.pins", "correspondence": "kicad: symbol pin number == pad name" } },@@ -208,13 +171,13 @@ ], "thermal": false, "pin": "5",- "name": null,- "type": null,- "description": null,+ "name": "NC",+ "type": "no_connect",+ "description": "No internal connection.", "is_pin1": false, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",- "meaning": null,+ "meaning": "page.json:component.pins", "correspondence": "kicad: symbol pin number == pad name" } },@@ -238,13 +201,13 @@ ], "thermal": false, "pin": "6",- "name": null,- "type": null,- "description": null,+ "name": "VOUT",+ "type": "power_out",+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat.", "is_pin1": false, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",- "meaning": null,+ "meaning": "page.json:component.pins", "correspondence": "kicad: symbol pin number == pad name" } },@@ -268,13 +231,13 @@ ], "thermal": false, "pin": "7",- "name": null,- "type": null,- "description": null,+ "name": "VOUT",+ "type": "power_out",+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat.", "is_pin1": false, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",- "meaning": null,+ "meaning": "page.json:component.pins", "correspondence": "kicad: symbol pin number == pad name" } },@@ -298,13 +261,13 @@ ], "thermal": false, "pin": "8",- "name": null,- "type": null,- "description": null,+ "name": "NC",+ "type": "no_connect",+ "description": "No internal connection.", "is_pin1": false, "source": { "geometry": "SOIC-8_3.9x4.9mm_P1.27mm.kicad_mod",- "meaning": null,+ "meaning": "page.json:component.pins", "correspondence": "kicad: symbol pin number == pad name" } }
page.json+30−6@@ -15,7 +15,7 @@ "mpn": "LD1117D33CTR", "manufacturer": "STMicroelectronics", "package": "SOIC-8",- "pin_count": 4,+ "pin_count": 8, "category": "PMIC", "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators", "datasheet": "https://www.st.com/resource/en/datasheet/ld1117d33ctr.pdf",@@ -36,25 +36,49 @@ "number": "1", "name": "GND", "type": "power_in",- "description": "Ground / common return pin. Reference for the internal band-gap and the 3.3 V output. Quiescent current returns through this pin."+ "description": "Ground / reference for the fixed 3.3 V output." }, { "number": "2", "name": "VOUT", "type": "power_out",- "description": "Regulated 3.3 V output (typ. 3.3 V, tolerance +/-1% at 25 degC). Sources up to 800 mA continuous; requires a 10 uF minimum output capacitor for loop stability. Electrically common with the DPAK tab."+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat." }, { "number": "3",+ "name": "VOUT",+ "type": "power_out",+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat."+ },+ {+ "number": "4", "name": "VIN", "type": "power_in",- "description": "Unregulated DC input supply. Operating range up to 15 V (18 V absolute max when IOUT < 20 mA); a 100 nF input decoupling capacitor is recommended. Dropout is typically 1.1 V at 800 mA load."+ "description": "Unregulated input supply."+ },+ {+ "number": "5",+ "name": "NC",+ "type": "no_connect",+ "description": "No internal connection." }, {- "number": "TAB",+ "number": "6", "name": "VOUT", "type": "power_out",- "description": "Exposed metal tab used as the primary thermal path to the PCB copper pour. Electrically tied to VOUT internally, so any copper it contacts is at the regulated output potential."+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat."+ },+ {+ "number": "7",+ "name": "VOUT",+ "type": "power_out",+ "description": "Regulated output. Brought out on four leads (2, 3, 6, 7) to carry current and conduct heat."+ },+ {+ "number": "8",+ "name": "NC",+ "type": "no_connect",+ "description": "No internal connection." } ], "provenance": {