HX6211B182MR from HX hengjiaxing, in a SOT-23-5. 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	VIN	power_in	Unregulated input supply. Operating range 1.8V to 7V; absolute maximum 9V. Bypass with a 10uF ceramic Ci to VSS close to the pin.
2	VSS	power_in	Device ground / return for VIN, VOUT, and CE. Tie to system GND with a low-impedance path.
3	CE	input	Chip-enable input. VCEH ≥ 0.35*VIN enables the regulator; VCEL ≤ 0.5V disables it, dropping quiescent current to ~0.1uA (Typ). Input current ≤ 0.5uA across 0V..VIN. Do not leave floating.
4	NC	unconnected	No internal connection. Leave floating or tie to VSS.
5	VOUT	power_out	Regulated 1.8V output (per B182 option code; series covers 1.8V-5.0V). ±2% accuracy, max output current 400mA at Vin=4.3V (600mA absolute). Requires a 10uF ceramic Co to VSS for stability.

Key specifications

Parameter	Value
Manufacturer	HX hengjiaxing
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

HX6211B182MR

CAD (KiCad official)

Symbol: HX6211B182MR
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HX hengjiaxing datasheet (6 pp, sha256 5b615ca1dc80aa8a, 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