SCT9339STER

@@ -0,0 +1,49 @@+# SCT9339STER++**SCT** · DC-DC Converters · ESOP-8++SCT9339STER from SCT, in a ESOP-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 | BOOT | passive | Bootstrap supply for the high-side power MOSFET gate driver. Connect a 0.1uF (or greater) ceramic capacitor between BOOT and SW to generate the boosted gate-drive voltage. |+| 2 | VIN | power_in | Power supply input, 3.8V to 28V. Must be locally bypassed with a ceramic capacitor close to the pin. |+| 3 | EN | input | Enable logic input. Floating the pin enables the device; supports high-voltage input up to VIN so it can be tied directly to VIN for auto-enable. Precision thresholds of 1.18V rising / 1.1V falling allow programmable UVLO via a resistor divider. |+| 4 | NC | unconnected | No internal connection. Leave floating or tie to a convenient node. |+| 5 | FB | input | Buck converter output feedback sensing input. Connect a resistor divider from VOUT to FB to program the output voltage; the device regulates FB to the internal 0.8V (±1%) reference. |+| 6 | NC | unconnected | No internal connection. Leave floating or tie to a convenient node. |+| 7 | NC | unconnected | No internal connection. Leave floating or tie to a convenient node. |+| 8 | SW | power_out | Switching node of the buck converter. Connect to the external inductor; also serves as the bootstrap capacitor return reference for the BOOT pin. |+| 9 | GND (Thermal Pad) | power_in | Exposed thermal pad on the bottom of the ESOP-8 package. Serves as device ground and the heat-dissipation path; must be soldered to the PCB ground plane for proper operation and thermal performance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | SCT |+| Package | ESOP-8 |+| Category | PMIC |+| Pins | 9 |++## Ordering variants++- `SCT9339STERSTE`+- `SCT9339STERSTER`++## CAD (KiCad official)++- Symbol: `SCT9339STER`+- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`+- 3D model: ESOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [SCT datasheet](docs/sct9339ster-datasheet.pdf) (19 pp, sha256 `d8867bdb12241602`, 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/sct9339ster-datasheet.pdf)

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