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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README.md+14@@ -43,6 +43,20 @@ UC2844BD1R2G from onsemi, in a SOIC-8. Pinout and pin descriptions extracted fro - Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm` - 3D model: SOIC-8 (KiCad packages3D, STEP) +## 3D model downloads++Two STEP files. Same geometry, different body top:++| File | Size | Use it when |+|---|---|---|+| [`uc2844bd1r2g.step`](uc2844bd1r2g.step) | 122 KB | You want the bare part, or you mark your own boards. |+| [`uc2844bd1r2g-etched.step`](uc2844bd1r2g-etched.step) | 2.7 MB | You want the part with `UC2844BD1R2G` already on it. |++The marking in the etched file is real recessed geometry cut into the solid, not a+texture or a decal: 649 faces against 147 in the bare model. It+survives export, section views, and rendering in any CAD tool, and it drops straight+into KiCad or Fusion with no extra setup.+ ## Provenance Data extracted from the manufacturer datasheet, not a distributor listing:
package.json+1−1@@ -1,6 +1,6 @@ { "slug": "uc2844bd1r2g",- "version": "0.1.0",+ "version": "0.2.0", "type": "component", "description": "onsemi AC-DC Controllers and Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.", "tags": [
page.json+9−9@@ -4,7 +4,7 @@ "slug": "uc2844bd1r2g", "title": "UC2844BD1R2G", "brief": "onsemi AC-DC Controllers and Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",- "version": "0.1.0",+ "version": "0.2.0", "license": "CC-BY-SA-4.0", "tags": [ "component",@@ -40,7 +40,7 @@ "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."+ "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 µA, max -1.0 µA (UC284xB) at V_FB = 5.0 V." }, { "number": "3",@@ -52,7 +52,7 @@ "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)."+ "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 ≈ 1.72 / (R_T·C_T) for R_T > 5 kΩ). Also sets the maximum output duty cycle (~50% max via internal blanking on alternate cycles)." }, { "number": "5",@@ -70,13 +70,13 @@ "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)."+ "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 ≤ 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."+ "description": "Trimmed 5.0 V reference output (±1% at 25 °C, 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": {@@ -150,9 +150,9 @@ "docs/hero.png", "docs/uc2844bd1r2g-datasheet.pdf", "viewers/symbol.html",- "viewers/footprint.html"+ "viewers/footprint.html",+ "pads.json" ],- "visibility": {- "public": true- }+ "visibility": "public",+ "description": "onsemi AC-DC Controllers and Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D." }