XB8089D

@@ -0,0 +1,48 @@+# XB8089D++**XySemi** · Battery Management · SOIC-8-EP++XB8089D from XySemi, in a SOIC-8-EP. 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 | VM | input | Negative terminal of the battery pack sense/switch node. The internal FET switch connects this terminal to GND during normal operation. Used to sense charger/load presence and overcurrent (rated -6 V to 10 V absolute max). |+| 2 | VM | input | Negative terminal of the battery pack sense/switch node (paralleled with pins 1/3/4). |+| 3 | VM | input | Negative terminal of the battery pack sense/switch node (paralleled with pins 1/2/4). |+| 4 | VM | input | Negative terminal of the battery pack sense/switch node (paralleled with pins 1/2/3). |+| 5 | GND | power_in | Ground. Connect the negative terminal of the battery cell (BAT-) to this pin. |+| 6 | VDD | power_in | Power supply input. Connect to BAT+ through the recommended 1 kΩ series resistor (with a 0.1 µF decoupling cap to GND). Absolute maximum VDD is -0.3 V to 6 V. |+| 7 | GND | power_in | Ground. Tied to pins 5 and 8; connect to the battery negative terminal. |+| 8 | GND | power_in | Ground. Tied to pins 5 and 7; connect to the battery negative terminal. |+| 9 | EPAD | power_in | Exposed thermal pad on the underside of the SOP8-EPAD package. Must be soldered to the GND copper pour of the XB8089D for proper thermal dissipation and current handling. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XySemi |+| Package | SOIC-8-EP |+| Category | PMIC |+| Pins | 9 |++## Ordering variants++- `XB8089D`++## CAD (KiCad official)++- Symbol: `XB8089D`+- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm`+- 3D model: SOIC-8-EP (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XySemi datasheet](docs/xb8089d-datasheet.pdf) (12 pp, sha256 `369d1f9bfe612e8b`, 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/xb8089d-datasheet.pdf)

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