DK5V45R25P

@@ -0,0 +1,44 @@+# DK5V45R25P++**Shenzhen DongKe Semicon** · AC-DC Controllers and Regulators · SOP-8++DK5V45R25P 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 | A | passive | Anode-equivalent terminal of the synchronous rectifier (source of the internal 45V NMOS). Acts as the diode anode in the application; all A pins (1,2,3) are internally tied and typically connected to transformer secondary return. Reference point for all datasheet voltage specs. |+| 2 | A | passive | Anode-equivalent terminal of the synchronous rectifier. Internally tied to pins 1 and 3. |+| 3 | A | passive | Anode-equivalent terminal of the synchronous rectifier. Internally tied to pins 1 and 2. |+| 4 | VCC | power_in | Chip supply pin. Startup threshold VCC_ON = 3.6V, UVLO VCC_OFF = 3.1V, normal operating range 5-6V. In 5V low-side applications VCC ties directly to the output positive rail - no external components required. |+| 5 | K | passive | Cathode-equivalent terminal of the synchronous rectifier (drain of the internal 45V NMOS). Acts as the diode cathode in the application; all K pins (5,6,7,8) are internally tied and typically connected to the output positive rail. |+| 6 | K | passive | Cathode-equivalent terminal of the synchronous rectifier. Internally tied to pins 5, 7, 8. |+| 7 | K | passive | Cathode-equivalent terminal of the synchronous rectifier. Internally tied to pins 5, 6, 8. |+| 8 | K | passive | Cathode-equivalent terminal of the synchronous rectifier. Internally tied to pins 5, 6, 7. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shenzhen DongKe Semicon |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `DK5V45R25P`+- 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/dk5v45r25p-datasheet.pdf) (6 pp, sha256 `d96183bd9086ab0e`, 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/dk5v45r25p-datasheet.pdf)

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