component
UC2844BD1R2G
Public Made by Adomby adom
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": "uc2844bd1r2g",+ "title": "UC2844BD1R2G",+ "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", "uc2844bd1r2g" ],+ "component": {+ "mpn": "UC2844BD1R2G",+ "manufacturer": "onsemi",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "PMIC",+ "subcategory": "AC-DC Controllers and Regulators",+ "datasheet": "https://www.onsemi.com/pdf/datasheet/uc2844bd1r2-d.pdf",+ "parts": {+ "symbol": "uc2844bd1r2g.kicad_sym",+ "footprint": "uc2844bd1r2g.kicad_mod",+ "model_3d": "uc2844bd1r2g.glb",+ "model_3d_step": "uc2844bd1r2g.step",+ "lbr": "uc2844bd1r2g.lbr"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "Compensation",+ "type": "output",+ "description": "Error amplifier output, used for loop compensation. Typically tied to Voltage Feedback (pin 2) through an R-C network to set the closed-loop bandwidth and phase margin. Output swings from ~0.8 V (low) up to ~6.2 V (high) with ~1 mA source / 12 mA sink capability."+ },+ {+ "number": "2",+ "name": "Voltage Feedback",+ "type": "input",+ "description": "Inverting input of the internal error amplifier. Normally connected to the switching-supply output through a resistor divider; internal reference is 2.5 V. Input bias current typically -0.1 \u00b5A, max -1.0 \u00b5A (UC284xB) at V_FB = 5.0 V."+ },+ {+ "number": "3",+ "name": "Current Sense",+ "type": "input",+ "description": "Input to the PWM current-sense comparator. A voltage proportional to the switch/inductor current (developed across an external current-sense resistor) is applied here. Peak comparator threshold is 1.0 V typical (max 1.1 V); internal current-sense-to-output voltage gain A_V = 3.0 V/V."+ },+ {+ "number": "4",+ "name": "RT/CT",+ "type": "passive",+ "description": "Oscillator timing pin. An external resistor R_T from Vref to this pin and a timing capacitor C_T from this pin to GND set the oscillator frequency (f_OSC \u2248 1.72 / (R_T\u00b7C_T) for R_T > 5 k\u03a9). Also sets the maximum output duty cycle (~50% max via internal blanking on alternate cycles)."+ },+ {+ "number": "5",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground (single ground pin on the 8-pin package; combined signal and power return). All bypass capacitors and the current-sense resistor should return here with a low-impedance path."+ },+ {+ "number": "6",+ "name": "Output",+ "type": "output",+ "description": "High-current totem-pole gate-drive output for driving an external power MOSFET. Rated 1.0 A peak source/sink; typical rise/fall time 50 ns into 1.0 nF. Output is held low with V_CC below the UVLO threshold."+ },+ {+ "number": "7",+ "name": "VCC",+ "type": "power_in",+ "description": "Positive supply input for control logic and gate driver. UC2844B UVLO turn-on = 16 V typ, turn-off = 10 V typ (large hysteresis for bootstrap start-up). Startup current 0.3 mA typ; operating current 12 mA typ. Absolute max 36 V (internally clamped by zener; limit I_CC + I_Z \u2264 30 mA)."+ },+ {+ "number": "8",+ "name": "Vref",+ "type": "power_out",+ "description": "Trimmed 5.0 V reference output (\u00b11% at 25 \u00b0C, I_O = 1.0 mA). Sources up to ~20 mA for external circuitry; internally current-limited to -85 mA (typ) short-circuit. Bypass to GND with a low-ESR ceramic capacitor."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://www.onsemi.com/pdf/datasheet/uc2844bd1r2-d.pdf",+ "pages": 19,+ "sha256": "e69ff39fc0ea9e08",+ "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": [+ "uc2844bd1r2g"+ ],+ "discovery_pitch": "UC2844BD1R2G (onsemi) component page with datasheet-verified CAD.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -25,10 +138,5 @@ "docs/uc2844bd1r2g-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }