NCP1200D100R2G

@@ -0,0 +1,50 @@+# NCP1200D100R2G++**onsemi** · AC-DC Controllers and Regulators · SOIC-8++NCP1200D100R2G from onsemi, 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 | Adj | input | Skip-cycle peak-current adjust. Sets the level below which the controller enters skip-cycle mode for light-load efficiency. Default Vskip ~1.4 V; internal output impedance ~25 kOhm. |+| 2 | FB | input | Feedback input; connect an optocoupler collector here to adjust the peak-current setpoint according to output power demand. Internally pulled up (Rup ~8 kOhm) to internal reference; FB-to-Ipk division ratio ~4. |+| 3 | CS | input | Current sense input. Senses the primary switch current via a sense resistor and routes it through a 250 ns leading-edge blanking network to the internal PWM comparator. Max internal current setpoint ~1.0 V. |+| 4 | GND | power_in | IC ground reference for all internal circuitry. |+| 5 | Drv | output | Gate drive output to an external MOSFET or IGBT. +/-250 mA peak source/sink; Roh ~40 Ohm (typ), Rol ~12 Ohm (typ). Rise ~67 ns, fall ~28 ns into 1 nF. |+| 6 | VCC | power_in | Supply pin for the IC. Connect an external bulk capacitor of typically 10 uF. UVLO: VCCON ~9.8 V (start), VCCOFF ~11.4 V (stop during dynamic self-supply). Absolute max 16 V. |+| 7 | NC | unconnected | No connection. Left un-connected to ensure adequate creepage distance between the low-voltage side (VCC) and the high-voltage HV pin. |+| 8 | HV | power_in | High-voltage start-up / self-supply pin. Connect directly to the rectified high-voltage rail; injects a constant current (~4 mA) into the VCC bulk cap to eliminate the auxiliary winding. Minimum operating voltage 30 V; max 450 V (VCC grounded) or 500 V (VCC decoupled with 10 uF). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | SOIC-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `NCP1200D100R2G`+- `NCP1200D100R2GP100G`++## CAD (KiCad official)++- Symbol: `NCP1200D100R2G`+- 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:** [onsemi datasheet](docs/ncp1200d100r2g-datasheet.pdf) (18 pp, sha256 `6af2476d5e861a8b`, 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/ncp1200d100r2g-datasheet.pdf)

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