UC2843AD8TR

@@ -0,0 +1,56 @@+# UC2843AD8TR++**Texas Instruments** · DC-DC Converters · SOIC-8++UC2843AD8TR from Texas Instruments, in a SOIC-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 | Output of the low-impedance 1-MHz internal error amplifier and input to the peak current limit / PWM comparator. Open-loop gain (AVOL) 80 dB; capable of sinking up to 6 mA and is not internally current limited. |+| 2 | FB | input | Inverting input to the error amplifier, used to control the power converter voltage-feedback loop for stability. |+| 3 | ISENSE | input | Input to the peak current limit / PWM comparator. Used with a current sense resistor; the error-amplifier output voltage controls cycle-by-cycle peak current limit. Maximum peak current sense signal is internally clamped to 1 V. |+| 4 | RT/CT | input | Input to the internal oscillator, programmed with an external timing resistor (RT) and timing capacitor (CT). TI recommends CT of 470 pF to 4.7 nF and RT of 5 kΩ to 100 kΩ. |+| 5 | GND | power_in | Controller signal ground. In the 8-pin package, both signal ground and gate-driver return share this pin. |+| 6 | OUTPUT | output | Totem-pole gate-driver output. Can sink and source up to 1 A; a gate-drive resistor must be used to limit gate-driver current. |+| 7 | VCC | power_in | Bias input to the gate driver and the IC. Requires a bypass capacitor at least 10× the gate capacitance of the main switching FET. UC2843A UVLO on/off = 8.4 V / 7.6 V; absolute max 30 V. |+| 8 | VREF | power_out | 5-V reference voltage output of the PWM controller. Must supply no more than 10 mA under normal operation; short-circuit protected at ~100 mA. Requires a 1 µF high-frequency bypass capacitor. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `UC2843AD8TRD`+- `UC2843AD8TR`+- `UC2843AD8TRDR`+- `UC2843AD8TRP`+- `UC2843AD8TRN`+- `UC2843AD8TRJG`+- `UC2843AD8TRDW`+- `UC2843AD8TRDWR`+- `UC2843AD8TRFK`+- `UC2843AD8TRFN`++## CAD (KiCad official)++- Symbol: `UC2843AD8TR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/uc2843ad8tr.pdf) (48 pp, sha256 `2105c9079933cb44`, retrieved 2026-08-17, tier: manufacturer)+- **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/uc2843ad8tr-datasheet.pdf)

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