component
SY8401ABC
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Silergy Corp DC-DC Converters, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# SY8401ABC++**Silergy Corp** · DC-DC Converters · SOT-23-6++SY8401ABC from Silergy Corp, in a SOT-23-6. 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 | BS | passive | Boot-strap pin supplying the high-side gate driver. Decouple to LX with a 100nF (0.1uF) low-ESR ceramic capacitor. Absolute maximum BS-LX = 4V. |+| 2 | GND | power_in | Ground pin. Also serves as the case position for θ_JC measurement on the SOT23-6 package; maximize copper area for best thermal and noise performance. |+| 3 | FB | input | Output feedback pin. Connect to the center of an external resistor divider to program the output voltage: VOUT = 0.6V × (1 + R1/R2). Reference voltage 0.594-0.606V; FB input current ±50nA max. |+| 4 | EN | input | Enable control. Pull high (>1.26V) to turn on, pull low (<0.94V) to shut down (I_SHDN < 10µA). Do not leave floating; consider a 1MΩ pull-down to GND if the driving source is high-impedance at shutdown. |+| 5 | IN | power_in | Input supply pin, 4.5V to 50V operating range (absolute maximum 55V). Decouple to GND with at least 1uF (10uF X5R low-ESR ceramic recommended) placed close to the IN/GND pins. |+| 6 | LX | power_out | Switching node / inductor pin. Connects internally to the drain of the high-side N-channel power FET (RDS(ON) = 700mΩ typ). Connect to the external inductor; minimize PCB copper area on this net to reduce EMI. Peak current limit 1.05-1.65A. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Silergy Corp |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `SY8401ABCABC`++## CAD (KiCad official)++- Symbol: `SY8401ABC`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Silergy Corp datasheet](docs/sy8401abc-datasheet.pdf) (10 pp, sha256 `5406cac6f9b1f5fd`, retrieved 2026-08-17, tier: manufacturer)+- **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/sy8401abc-datasheet.pdf)
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