TD1484AMR from Techcode Semicon, in a SOIC-8-EP. 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	BS	passive	High-Side Gate Drive Boost Input. Supplies drive voltage for the high-side N-channel MOSFET. Connect a 0.01µF or greater bootstrap capacitor from SW to BS to power the high-side switch.
2	IN	power_in	Supply Voltage input. Operates from +4.75V to +20V unregulated input. An input decoupling capacitor (C1) is required at this pin to prevent large voltage spikes.
3	SW	power_out	Power Switching Output. The switching node that supplies power to the output. Connect the output LC filter from SW to the load; also ties to the bootstrap capacitor for the high-side switch.
4	GND	power_in	Device ground. Also connected internally to the exposed pad, which serves as a thermal radiator and must be soldered to the PCB ground plane.
5	FB	input	Feedback Input. Senses the output voltage via a resistive divider to regulate the output. Feedback threshold is 0.923V (typ).
6	COMP	passive	Compensation Node for the regulation control loop. Connect a series RC network from COMP to GND to compensate the loop; an additional shunt capacitor from COMP to GND may be required.
7	EN	input	Enable Input. Digital input that turns the regulator on (high) or off (low). Threshold ~1.5V typ; pull up with a 100kΩ resistor for automatic startup.
8	SS	passive	Soft-Start Control Input. A capacitor from SS to GND sets the soft-start period (0.1µF ≈ 15ms via ~6µA charge current). Leave unconnected to disable the soft-start feature.
9	EP	power_in	Exposed thermal pad on the bottom of the ESOP-8 package. Internally connected to GND and must be soldered to the PCB ground plane for proper thermal performance.

Key specifications

Parameter	Value
Manufacturer	Techcode Semicon
Package	SOIC-8-EP
Category	PMIC
Pins	9

Ordering variants

Same part, different packaging or reel option.

TD1484AMR

CAD (KiCad official)

Symbol: TD1484AMR
Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
3D model: SOIC-8-EP (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`td1484amr.step`	193 KB	You want the bare part, or you mark your own boards.
`td1484amr-etched.step`	1.4 MB	You want the part with `TD1484AMR` 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 63 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 (13 pp, sha256 3605ce070377a87a, 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