TX4137

@@ -0,0 +1,41 @@+# TX4137++**XDS** · DC-DC Converters · SOT-23-6++TX4137 from XDS, in a SOT-23-6. Pinout and pin descriptions extracted from the datasheet (via LCSC) by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | NC | unconnected | No connect. Leave floating. |+| 2 | GND | power_in | Ground reference for the IC. Connect to the system ground plane using a large copper area to improve thermal dissipation. |+| 3 | FB | input | Output feedback voltage pin. Connect to the mid-point of an external resistor divider from VOUT to GND. The internal reference is 0.812V (typ, 0.792-0.832V). Absolute max 6V. |+| 4 | EN | input | Chip enable input. Rising threshold ~1.35V, falling ~1.17V, hysteresis 180mV. Do not leave floating; pull up to IN through ~510kΩ if unused. Absolute max 6V. |+| 5 | IN | power_in | Chip power input. Operates from 5.5V to 60V (abs max 65V). Bypass with a low-ESR ceramic capacitor (X5R/X7R, typically 4.7µF) placed close to the pin. |+| 6 | SW | output | Switch node output; drain of the internal high-side power MOSFET (RDS(on) ≈ 0.9Ω). Connect to the inductor and to the freewheeling Schottky diode cathode. Operates from -0.3V to VIN+0.3V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XDS |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `TX4137`+- 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:** [XDS datasheet](https://datasheet.lcsc.com/datasheet/pdf/8474a2432d895279533b900693ae5e97.pdf) (8 pp, sha256 `977d631c3d6360a2`, 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/tx4137-datasheet.pdf)

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