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UC3845BN
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STMicroelectronics AC-DC Controllers and Regulators, DIP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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page.json+116−8@@ -1,13 +1,126 @@ {+ "schema_version": 1,+ "type": "component", "slug": "uc3845bn",+ "title": "UC3845BN",+ "brief": "STMicroelectronics AC-DC Controllers and Regulators, DIP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.", "version": "0.1.0",- "type": "component",- "description": "STMicroelectronics AC-DC Controllers and Regulators, DIP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "pmic", "uc3845bn" ],+ "component": {+ "mpn": "UC3845BN",+ "manufacturer": "STMicroelectronics",+ "package": "DIP-8",+ "pin_count": 8,+ "category": "PMIC",+ "subcategory": "AC-DC Controllers and Regulators",+ "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f5f1fe2018fe4b0fb5140e98da46aa14.pdf",+ "parts": {+ "symbol": "uc3845bn.kicad_sym",+ "footprint": "uc3845bn.kicad_mod",+ "model_3d": "uc3845bn.glb",+ "model_3d_step": "uc3845bn.step",+ "lbr": "uc3845bn.lbr"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "COMP",+ "type": "output",+ "description": "Error amplifier output made available for loop compensation. Typically an RC network is connected between this pin and VFB (pin 2) to shape the control-loop response."+ },+ {+ "number": "2",+ "name": "VFB",+ "type": "input",+ "description": "Inverting input of the internal error amplifier. Normally connected to the switching power supply output through a resistor divider; the non-inverting input is internally tied to the 2.5 V reference."+ },+ {+ "number": "3",+ "name": "ISENSE",+ "type": "input",+ "description": "Current-sense input. A voltage proportional to the primary/inductor current is applied here; the PWM comparator terminates the output switch conduction when this pin reaches the error-amp-derived threshold (max input signal ~1 V, gain 3 V/V)."+ },+ {+ "number": "4",+ "name": "RT/CT",+ "type": "passive",+ "description": "Oscillator timing pin. A resistor RT from this pin to VREF and a capacitor CT from this pin to GROUND set the oscillator frequency and the maximum output duty cycle. Operation up to 500 kHz is possible."+ },+ {+ "number": "5",+ "name": "GROUND",+ "type": "power_in",+ "description": "Common control-circuitry and power-stage return. All voltages in the datasheet are referenced to this pin; timing and bypass capacitors must connect close to this pin in a single-point ground."+ },+ {+ "number": "6",+ "name": "OUTPUT",+ "type": "output",+ "description": "High-current totem-pole gate-drive output for an external N-channel power MOSFET. Peak source/sink currents up to 1 A; typical rise/fall times ~50 ns into 1 nF."+ },+ {+ "number": "7",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply of the control IC (labeled Vi in the block diagram/absolute-maximum table). Max 30 V (self-limiting via internal ~36 V zener). UVLO turn-on 8.5 V typ, turn-off 7.9 V typ; operating supply current ~12 mA typ."+ },+ {+ "number": "8",+ "name": "VREF",+ "type": "power_out",+ "description": "Buffered 5.0 V reference output (5 V, 50 mA capable). Provides charging current for the timing capacitor CT through the timing resistor RT and can bias external circuitry."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://datasheet.lcsc.com/datasheet/pdf/f5f1fe2018fe4b0fb5140e98da46aa14.pdf",+ "pages": 15,+ "sha256": "62066370bcc6f048",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Manufacturer": "STMicroelectronics",+ "Package": "DIP-8",+ "Category": "PMIC",+ "Pins": "8"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "uc3845bn"+ ],+ "discovery_pitch": "UC3845BN (STMicroelectronics) component page with datasheet-verified CAD.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -25,10 +138,5 @@ "docs/uc3845bn-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }