HT7836-A from UMW, in a SOT-89-3. 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	Ground reference for the regulator. Connect to system ground; the device references its output and internal Vref to this pin.
2	VOUT	power_out	Regulated output voltage, 3.6V nominal (3.492V min / 3.708V max) at IOUT=40mA. Delivers up to 450mA. Recommended output capacitor for stability (see application section).
3	VIN	power_in	Supply input voltage. Absolute max 15V; recommended operating max 12V. Minimum input ~4.5V for 3.6V output regulation (VOUT + dropout ~80mV). Bypass with a small ceramic capacitor to GND.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOT-89-3
Category	PMIC
Pins	3

CAD (KiCad official)

Symbol: HT7836-A
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ht7836-a.step`	57 KB	You want the bare part, or you mark your own boards.
`ht7836-a-etched.step`	1.1 MB	You want the part with `HT7836-A` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 296 faces against 42 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: UMW datasheet (12 pp, sha256 0ddd2116b6d87a09, 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