dk501

@@ -0,0 +1,49 @@+# DK501++**Shenzhen DongKe Semicon** · AC-DC Controllers and Regulators · SOP-8++DK501 from Shenzhen DongKe Semicon, in a SOP-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 | TC | passive | Thermal/connection pin. Per datasheet, tied to GND. Provides thermal conduction path. |+| 2 | GND | power_in | Internal ground reference pin. Reference point for all sampled/detected signals inside the IC. |+| 3 | FB | input | Feedback voltage sense pin. Regulates output by comparing voltage between pin 2 (GND) and pin 3 (FB) against the internal 2.5V reference. Requires an external 102-103 (1nF-10nF) smoothing capacitor to filter the signal. |+| 4 | VCC | power_in | IC supply pin. Uses patented self-powered technology; requires an external 22uF/47uF low-ESR high-frequency capacitor for energy storage placed close between pin 4 and pin 2. Operating VCC ≈ 4.7V, startup threshold 4.95V, restart 3.4V, protection 6.3V. |+| 5 | OC | power_out | Open-collector/drain output of the integrated 700V high-voltage power switching MOSFET (drain node) and current-sense circuit. Also serves as a thermal-conduction pin; enlarge PCB copper area for heat dissipation. Peak current 600 mA typ. |+| 6 | OC | power_out | Open-collector/drain output of the integrated 700V high-voltage power switching MOSFET (drain node). Tied together with pins 5, 7, and 8 for thermal dissipation. |+| 7 | OC | power_out | Open-collector/drain output of the integrated 700V high-voltage power switching MOSFET (drain node). Tied together with pins 5, 6, and 8 for thermal dissipation. |+| 8 | OC | power_out | Open-collector/drain output of the integrated 700V high-voltage power switching MOSFET (drain node). Tied together with pins 5, 6, and 7 for thermal dissipation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shenzhen DongKe Semicon |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `DK501`+- `DK501S`++## CAD (KiCad official)++- Symbol: `DK501`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shenzhen DongKe Semicon datasheet](docs/dk501-datasheet.pdf) (None pp, sha256 `d6c13d2c6381bb42`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/dk501-datasheet.pdf)

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