HX6606P332MR from HX hengjiaxing, in a SOT-23. 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 / VSS reference. Common return for input and output current.
2	VOUT	power_out	Regulated output. Factory-trimmed to a voltage in 1.2-5.0 V (3.3 V for the -33 variant), ±2% accuracy, up to 300 mA output current. Requires ~1.0 µF ceramic output capacitor.
3	VIN	power_in	Unregulated supply input. Operating range up to 8 V absolute max; typical Vin ≥ Vout + dropout (0.28-0.68 V depending on Vout). Bypass with ~1.0 µF ceramic capacitor.

Key specifications

Parameter	Value
Manufacturer	HX hengjiaxing
Package	SOT-23
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

HX6606P332MR

CAD (KiCad official)

Symbol: HX6606P332MR
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HX hengjiaxing datasheet (5 pp, sha256 9d64f0e1dcc3149e, 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).

Datasheet PDF