TD1466TR from Techcode Semicon, in a SOT-23-6. 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	BST	passive	Bootstrap. Connect a capacitor (typ. 0.1µF) between SW and BST to form a floating supply for the high-side power switch driver, boosting the gate drive above VIN.
2	GND	power_in	Ground. Voltage reference for the regulated output. Isolate from the D1-to-C1 ground path to prevent switching-current spikes from being induced into the sensitive analog return.
3	FB	input	Feedback input. Connect to the tap of an external resistor divider from VOUT to GND to set the output voltage against the 0.812V internal reference. Frequency foldback lowers the switching frequency when VFB < 300mV to prevent current-limit runaway during short-circuit.
4	EN	input	Enable input. Pull above VEN_R ≈ 1.35V to turn the device ON; pull below ~1.17V to shut down (IS ≈ 0.1µA). For automatic enable at power-up, tie to VIN through a ~1MΩ resistor.
5	VIN	power_in	Supply voltage input, 11V to 60V (absolute max 60V). Requires a local input capacitor (typ. 4.7µF X5R/X7R ceramic) to suppress switching-current spikes.
6	SW	power_out	Switching node - drain of the internal N-channel power MOSFET (RDS(ON) ≈ 0.7Ω). Connect to the external inductor and Schottky catch diode of the buck output filter.

Key specifications

Parameter	Value
Manufacturer	Techcode Semicon
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

Same part, different packaging or reel option.

TD1466TRT
TD1466TR

CAD (KiCad official)

Symbol: TD1466TR
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`td1466tr.step`	97 KB	You want the bare part, or you mark your own boards.
`td1466tr-etched.step`	1.5 MB	You want the part with `TD1466TR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 377 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Techcode Semicon datasheet (8 pp, sha256 ab36122dc7aa9ee3, 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