component
UC3845BD1R2G
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onsemi AC-DC Controllers and Regulators, SOIC-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": "uc3845bd1r2g",+ "title": "UC3845BD1R2G",+ "brief": "onsemi AC-DC Controllers and Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.", "version": "0.1.0",- "type": "component",- "description": "onsemi AC-DC Controllers and Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "pmic", "uc3845bd1r2g" ],+ "component": {+ "mpn": "UC3845BD1R2G",+ "manufacturer": "onsemi",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "PMIC",+ "subcategory": "AC-DC Controllers and Regulators",+ "datasheet": "https://www.onsemi.com/pdf/datasheet/uc3845bd1r2-d.pdf",+ "parts": {+ "symbol": "uc3845bd1r2g.kicad_sym",+ "footprint": "uc3845bd1r2g.kicad_mod",+ "model_3d": "uc3845bd1r2g.glb",+ "model_3d_step": "uc3845bd1r2g.step",+ "lbr": "uc3845bd1r2g.lbr"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "Compensation",+ "type": "output",+ "description": "Error amplifier output / compensation node. External RC network to Voltage Feedback (pin 2) sets the closed-loop gain and frequency response of the error amplifier used for output regulation."+ },+ {+ "number": "2",+ "name": "Voltage Feedback",+ "type": "input",+ "description": "Inverting input of the on-chip 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 (VFB regulation set point ~2.5 V)."+ },+ {+ "number": "3",+ "name": "Current Sense",+ "type": "input",+ "description": "Non-inverting input of the current-sense comparator. Monitors the MOSFET source current across a sense resistor; the internal PWM latch is reset (output terminates) when this pin reaches the threshold set by the error amp output (nominal max threshold 1.0 V)."+ },+ {+ "number": "4",+ "name": "RT/CT",+ "type": "passive",+ "description": "Oscillator timing pin. External resistor RT to Vref and timing capacitor CT to GND set the oscillator frequency (fOSC \u2248 1.72 / (RT\u00b7CT) for RT > 5 k\u03a9). Output switching frequency equals oscillator frequency."+ },+ {+ "number": "5",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground and current return for control circuitry and totem-pole output stage. In the SOIC-8/PDIP-8 package the signal and power grounds share this pin (the SOIC-14 D-suffix splits them)."+ },+ {+ "number": "6",+ "name": "Output",+ "type": "output",+ "description": "High-current totem-pole gate-drive output for the external power MOSFET. Capable of \u00b11 A peak source/sink; typical VOH \u2248 13.5 V and VOL \u2248 0.1 V at 20 mA. Rise/fall times ~50 ns into 1 nF."+ },+ {+ "number": "7",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply for the control IC and output driver. UVLO thresholds for the UC3845B are 8.5 V (on) / 7.6 V (off). Absolute max 36 V (internally zener-clamped); typical startup current 0.3 mA, operating current ~12 mA."+ },+ {+ "number": "8",+ "name": "Vref",+ "type": "power_out",+ "description": "Buffered 5.0 V \u00b11% precision reference output (4.95-5.05 V at 25 \u00b0C, 1 mA). Sources up to ~50 mA to bias external circuitry and to feed the oscillator timing resistor RT. Short-circuit protected (~85 mA typ)."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://www.onsemi.com/pdf/datasheet/uc3845bd1r2-d.pdf",+ "pages": 22,+ "sha256": "811d8a44f6a2a239",+ "source_tier": "mfr"+ },+ "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": "onsemi",+ "Package": "SOIC-8",+ "Category": "PMIC",+ "Pins": "8"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "uc3845bd1r2g"+ ],+ "discovery_pitch": "UC3845BD1R2G (onsemi) component page with datasheet-verified CAD.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -25,10 +138,5 @@ "docs/uc3845bd1r2g-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }