component
LM78M12CDT
Public Made by Adomby adom
HGSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
page.json: fold the "TAB" entry into pin 2. On TO-252-2 the tab is not a separate pad - it is that lead - so nothing was ever unconnected, but the page listed it as its own pin and pads.json reported pin-not-in-symbol for a pin that cannot exist. Target chosen because net GND matches pin 2; the tab's description is merged into that pin rather than dropped.
2 files changed
+6−19
pads.json+2−9@@ -24,14 +24,7 @@ "3" ], "paste_apertures": 4,- "issues": [- {- "kind": "pin-not-in-symbol",- "pin": "TAB",- "name": "GND",- "detail": "page.json describes pin \"TAB\" (GND) from the datasheet, but the symbol has no such pin, so nothing can connect to it"- }- ],+ "issues": [], "pads": [ { "pad": "1",@@ -84,7 +77,7 @@ "pin": "2", "name": "GND", "type": "power_in",- "description": "Common ground reference. Electrically connected to the exposed TAB of the TO-252-2 package; solder the TAB to a copper pour for both grounding and heatsinking.",+ "description": "Common ground reference. Electrically connected to the exposed TAB of the TO-252-2 package; solder the TAB to a copper pour for both grounding and heatsinking. Also the package tab: exposed thermal/electrical tab, internally tied to GND (pin 2). Solder to a ground copper pour to conduct heat away from the die.", "is_pin1": false, "source": { "geometry": "TO-252-2.kicad_mod",
page.json+4−10@@ -15,7 +15,7 @@ "mpn": "LM78M12CDT", "manufacturer": "HGSEMI", "package": "TO-252-2",- "pin_count": 4,+ "pin_count": 3, "category": "PMIC", "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators", "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2405210917_HGSEMI-LM78M12CDT-TR_C7432052.pdf",@@ -32,25 +32,19 @@ "number": "1", "name": "VIN", "type": "power_in",- "description": "Unregulated DC input voltage. For the 12V variant, VI up to 35V absolute max; recommended operating range ~14.5V to 30V. Bypass to GND with 0.33µF ceramic close to the pin."+ "description": "Unregulated DC input voltage. For the 12V variant, VI up to 35V absolute max; recommended operating range ~14.5V to 30V. Bypass to GND with 0.33\u00b5F ceramic close to the pin." }, { "number": "2", "name": "GND", "type": "power_in",- "description": "Common ground reference. Electrically connected to the exposed TAB of the TO-252-2 package; solder the TAB to a copper pour for both grounding and heatsinking."+ "description": "Common ground reference. Electrically connected to the exposed TAB of the TO-252-2 package; solder the TAB to a copper pour for both grounding and heatsinking. Also the package tab: exposed thermal/electrical tab, internally tied to GND (pin 2). Solder to a ground copper pour to conduct heat away from the die." }, { "number": "3", "name": "VOUT", "type": "power_out",- "description": "Regulated +12V output (11.75V-12.25V typical at TJ=25°C), up to 0.5A with adequate heatsinking. Bypass to GND with a 0.1µF ceramic close to the pin for stability."- },- {- "number": "TAB",- "name": "GND",- "type": "power_in",- "description": "Exposed thermal/electrical tab, internally tied to GND (pin 2). Solder to a ground copper pour to conduct heat away from the die."+ "description": "Regulated +12V output (11.75V-12.25V typical at TJ=25\u00b0C), up to 0.5A with adequate heatsinking. Bypass to GND with a 0.1\u00b5F ceramic close to the pin for stability." } ], "provenance": {