TX4114

@@ -0,0 +1,43 @@+# TX4114++**XDS** · DC-DC Converters · SOP-8++TX4114 from XDS, in a SOP-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 | VFB | input | Output voltage feedback pin. Connect to the mid-point of the R1/R2 divider from VOUT to GND. The internal regulation comparator references Vref = 1.21 V, so VOUT = 1.21 * (R1/R2 + 1). Feedback input current is ~0.05 uA. |+| 2 | TOFF | passive | Oscillator / switching-frequency programming pin. Connect a resistor R4 to GND to set FOSC, per R4(kOhm) = 22000 / FOSC(kHz). Programmable range 150 kHz to 500 kHz (typ 220 kHz at R4 = 100 kOhm). Absolute max on this pin is -0.3 to 6 V. |+| 3 | CUR | passive | Output current-limit programming pin. Connect a resistor R3 to GND to set the current limit, per R3(kOhm) = 29.523 * IOUT. Internal current-limit comparator sink current is typ 8.5 uA (7-10 uA). Absolute max on this pin is -0.3 to 6 V. |+| 4 | VDD | power_in | Chip power supply input (also labeled VIN in the typical application). Operating range 8-30 V, absolute max -3.3 to 32 V. Requires an external electrolytic bulk-decoupling capacitor to GND. Quiescent current is ~10-20 mA at no load. |+| 5 | SW1 | output | Switch node output 1. Internally tied together with SW2 (pin 6) to the drain junction of the integrated high-side P-MOSFET (Rds(on) ~65 mOhm) and low-side N-MOSFET (Rds(on) ~30 mOhm). Connect to the external inductor of the buck output filter. Absolute max -0.3 to 32 V. |+| 6 | SW2 | output | Switch node output 2. Internally the same node as SW1 (pin 5) - the pins are paralleled for current handling. Connect together with SW1 to the external inductor. Absolute max -0.3 to 32 V. |+| 7 | GND | power_in | Chip ground / power return. Internally common with pin 8; both should be tied to the PCB ground plane for the power stage return current. |+| 8 | GND | power_in | Chip ground / power return. Internally common with pin 7; both should be tied to the PCB ground plane for the power stage return current. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XDS |+| Package | SOP-8 |+| Category | PMIC |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `TX4114`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XDS datasheet](docs/tx4114-datasheet.pdf) (6 pp, sha256 `99888ddfe5df6838`, 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/tx4114-datasheet.pdf)

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