SDH8322STR

@@ -0,0 +1,48 @@+# SDH8322STR++**Hangzhou Silan Microelectronics** · AC-DC Controllers and Regulators · SOP-8++SDH8322STR from Hangzhou Silan Microelectronics, 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 | SOURCE | power_in | Source of the integrated high-voltage power MOSFET. Tied together with pin 2; connects to the current-sense/return node of the switching converter (typically the return/ground of the power stage in a non-isolated buck-boost topology). |+| 2 | SOURCE | power_in | Second SOURCE pin of the integrated high-voltage power MOSFET. Tied with pin 1 to provide the switching converter return path. |+| 3 | VSET | input | Output voltage setting input. Three-level select pin that programs the internal reference / feedback divider for 12 V, 15 V or 18 V output. In the reference application it is left open (12 V), tied through a resistor R1 (15 V), or configured for 18 V per the datasheet's typical application diagrams. Internal 2 V EA reference is used with the on-chip VDD divider. |+| 4 | VDD | power_in | Chip supply pin. Charged by the internal high-voltage startup current source from the DRAIN pins; then held by an external bypass/auxiliary capacitor. Protected by VDD UVLO (typ. 16.5 V start / 8.8 V stop) and VDD OVP (typ. 26 V). |+| 5 | DRAIN | power_in | Drain of the integrated high-voltage power MOSFET. Connects to the switching node (inductor and rectified bulk high-voltage rail via the converter topology). Also feeds the internal high-voltage startup current source that charges VDD. |+| 6 | DRAIN | power_in | Drain of the integrated high-voltage power MOSFET. Tied with pins 5, 7 and 8. |+| 7 | DRAIN | power_in | Drain of the integrated high-voltage power MOSFET. Tied with pins 5, 6 and 8. |+| 8 | DRAIN | power_in | Drain of the integrated high-voltage power MOSFET. Tied with pins 5, 6 and 7. Four DRAIN pins are ganged to handle the switching current and improve thermal dissipation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Hangzhou Silan Microelectronics |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## Ordering variants++- `SDH8322STR`+- `SDH8322STRTR`++## CAD (KiCad official)++- Symbol: `SDH8322STR`+- 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:** [Hangzhou Silan Microelectronics datasheet](docs/sdh8322str-datasheet.pdf) (5 pp, sha256 `407e5698b2c8f07f`, 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/sdh8322str-datasheet.pdf)

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