TX4150A

@@ -0,0 +1,45 @@+# TX4150A++**XDS** · DC-DC Converters · ESOP-8++TX4150A from XDS, 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 | CS | input | Output current setting pin. A sense resistor (Rcs) from CS to GND programs the output constant-current limit and is also used by the internal line-drop (cable) compensation network. |+| 2 | BST | passive | Bootstrap capacitor pin for the high-side N-MOSFET gate driver. A 100 nF ceramic capacitor is connected between BST and SW; the internal LDO charges it to approximately 5.3V when the low-side switch is on. |+| 3 | SW | output | Switch node output. Common drain of the integrated high-side and low-side power MOSFETs; connect the external buck inductor here. Absolute maximum voltage is VDD+0.3V. |+| 4 | GND | power_in | Chip ground reference. Must be tied to the system ground plane; also internally connected to the exposed thermal pad (EP). |+| 5 | VDD | power_in | Chip power supply input. Wide operating range 4.5V to 36V (36V absolute max); input over-voltage protection triggers at 33V (Vinovp). Decouple with low-ESR ceramic input capacitance close to the pin. |+| 6 | FB | input | Feedback input. Connect a resistor divider from VOUT so that FB regulates to the internal 0.9V reference (VREF). VFB_OVP output over-voltage threshold is 1.1×VFB. Absolute max 6V. |+| 7 | EN | input | Chip enable input. Driving EN above its threshold turns the converter on; pulling it low places the part in shutdown. Do not leave floating: use a pull-up resistor, or a divider from VIN to program a higher input UVLO threshold. Absolute max 6V. |+| 8 | LED | output | External LED indicator drive output (typ. status/charge indicator in USB-charger applications). Absolute max 6V. |+| EP | EP | power_in | Exposed thermal pad on the bottom of the ESOP-8 package. Internally connected to GND; must be soldered to a PCB ground copper pour for proper thermal performance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XDS |+| Package | ESOP-8 |+| Category | PMIC |+| Pins | 9 |++## CAD (KiCad official)++- Symbol: `TX4150A`+- 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:** [XDS datasheet](docs/tx4150a-datasheet.pdf) (11 pp, sha256 `cf6b1936f63a5adb`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/tx4150a-datasheet.pdf)

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