TX6211

@@ -0,0 +1,43 @@+# TX6211++**XDS** · LED Drivers · SOP-8++TX6211 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 | GND | power_in | Device ground / power return (电源地). |+| 2 | EN | input | Enable input, active high. Also accepts a PWM signal for LED dimming. Logic thresholds: HEN ≥ 0.4×VDD, LEN ≤ 0.8V. |+| 3 | COMP | passive | Loop / frequency compensation node. Connect a compensation capacitor (and optional series RC) to GND to set the control-loop response. |+| 4 | IFB | input | Output LED current feedback sense input. Regulated to VIFB ≈ 250mV (min 240mV / max 260mV) across the LED-current sense resistor for constant-current control. |+| 5 | DRV | output | Gate-drive output for the external N-channel power MOSFET. Rise/fall time ≤ 50 ns into a 500 pF load; max voltage VDD + 0.3V. |+| 6 | ICS | input | Input / inductor peak-current sense input. Used for cycle-by-cycle peak current control and input over-current protection; VCS_TH ≈ 250 mV (240-260 mV). |+| 7 | TOFF | passive | Fixed off-time programming pin. Connect a capacitor C1 (typ. 22-47 pF) to GND to set TOFF = 0.51 × 150 kΩ × (C1 + 7.3 pF) + TD (TD ≈ 61 ns). Minimum TOFF ≈ 620 ns with no external cap. |+| 8 | VDD | power_in | Chip supply input, internally clamped by a Zener regulator to ~5.5V (IVDD < 10 mA). UVLO rising ≈ 3.2V with 0.5V hysteresis. Fed from VIN through an external dropping resistor RVDD. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XDS |+| Package | SOP-8 |+| Category | LED-drv |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `TX6211`+- 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/tx6211-datasheet.pdf) (8 pp, sha256 `d69a9c37293b6897`, 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/tx6211-datasheet.pdf)

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