component
TX6126
Public Made by Adomby adom
XDS LED Drivers, ESOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTX6126
XDS · LED Drivers · ESOP-8
TX6126 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 | GND | power_in | Device ground reference. Connect to the system ground plane close to the CS sense resistor return for accurate current sensing. |
| 2 | NC | unconnected | No connect. Leave floating (悬空). |
| 3 | DIM | input | Dimming control input. Pulling below 0.9V shuts down the LED output; above 3.1V forces 100% output current. Supports PWM dimming and linear dimming (linear range 1.1-3.1V). Must not be left floating; add >=10nF to GND for linear dimming. |
| 4 | SW | output | Switch node, internally connected to the drain of the integrated 90V power MOSFET. Connects to the inductor / freewheel diode of the buck power stage. Max VDS = 90V. |
| 5 | CS | input | Inductor peak current sense input. Internally paralleled with pin 6 (both CS pins are the same net). Threshold VCS_TH = 245/255/265 mV across the external sense resistor R2. |
| 6 | CS | input | Inductor peak current sense input (second CS pin, tied to pin 5 internally on the ESOP8 variant). Sense threshold 250 mV typical. |
| 7 | TOFF | input | Off-time programming pin. Fixed off-time is set by an external capacitor C1 via TOFF = 0.51 * 150kΩ * (C1 + 8pF) + TD (TD = 61 ns). With no external cap, the internal default TOFF is 650 ns. |
| 8 | VDD | power_in | Chip supply. Internally clamped by a 5.5V shunt zener (I_VDD < 10 mA). Supplied from VIN through dropping resistor R1 = (VIN - VDD) / I_VDD (typical I_VDD ≈ 2 mA). UVLO rising 2.6V, hysteresis 0.4V. |
| 9 | EP | passive | Exposed thermal pad on the ESOP8 package. Internally connected to the SW pin (MOSFET drain). Solder to a copper pour that follows the SW node for heat dissipation - do NOT tie to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XDS |
| Package | ESOP-8 |
| Category | LED-drv |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
TX6126 - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm - 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files:
tx6126-etched.step/tx6126-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tx6126.step/tx6126.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XDS datasheet (8 pp, sha256
0fb4682c062a3625, 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).