UC3843BD1013TR

@@ -0,0 +1,50 @@+# UC3843BD1013TR++**STMicroelectronics** · AC-DC Controllers and Regulators · SO-8++UC3843BD1013TR from STMicroelectronics, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | COMP | output | Error Amplifier output, made available for external loop compensation (typically an R-C network between COMP and VFB). Also serves as the input to the PWM comparator via an internal 2R:R divider and 1 V offset. |+| 2 | VFB | input | Inverting input of the internal Error Amplifier (non-inverting input tied to internal 2.50 V reference). Normally connected to the switching power supply output through a resistor divider for voltage-mode feedback. Input bias current typ -0.1 uA. |+| 3 | ISENSE | input | Current sense input. A voltage proportional to the switch/inductor current (typically from a source-side sense resistor) is applied here; the internal PWM current-sense comparator terminates the output switch conduction when this pin reaches ~1 V (max input signal 0.9-1.1 V, gain 3 V/V). |+| 4 | RT/CT | passive | Oscillator timing pin. Connect timing resistor RT from VREF (pin 8) to this pin and timing capacitor CT from this pin to GROUND to program oscillator frequency and maximum duty cycle. Operation up to 500 kHz. |+| 5 | GROUND | power_in | Combined control-circuitry and power ground return. All bypass, timing capacitors and current-sense components must be referenced to this pin via a single-point ground. |+| 6 | OUTPUT | output | Totem-pole gate driver output for directly driving the gate of an external N-channel power MOSFET. Sources/sinks up to ±1 A peak; rise/fall time typ 50 ns into 1 nF; low in the off-state. |+| 7 | Vi | power_in | Positive supply (VCC) of the control IC. Absolute maximum 30 V (self-limiting via internal 36 V zener at Ii<30 mA). UC3843B UVLO start threshold typ 8.5 V, minimum operating voltage after turn-on typ 7.6 V; operating supply current typ 12 mA. |+| 8 | VREF | power_out | Trimmed 5.00 V reference output (5 V ±2%, 50 mA capability). Supplies charging current to the timing capacitor CT via timing resistor RT and can be used to bias external circuitry. Short-circuit current typ -100 mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SO-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `UC3843BD1013TRD1`+- `UC3843BD1013TRD1013TR`+- `UC3843BD1013TRN`+- `UC3843BD1013TRBN`++## CAD (KiCad official)++- Symbol: `UC3843BD1013TR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SO-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](docs/uc3843bd1013tr-datasheet.pdf) (15 pp, sha256 `fedfd7362400f8b3`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/uc3843bd1013tr-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "uc3843bd1013tr",+  "version": "0.1.0",+  "type": "component",+  "description": "STMicroelectronics AC-DC Controllers and Regulators, SO-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "uc3843bd1013tr"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "uc3843bd1013tr.kicad_sym",+    "uc3843bd1013tr.kicad_mod",+    "uc3843bd1013tr.glb",+    "uc3843bd1013tr.step",+    "uc3843bd1013tr.lbr",+    "docs/hero.png",+    "docs/uc3843bd1013tr-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file