XC6219B332MR from UMW, in a SOT-23-5. Pinout and pin descriptions extracted from the datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	VIN	power_in	Regulator input supply. Operating range 1.8V to 7V (absolute max 9V). Bypass to VSS with a 10µF ceramic capacitor (Ci).
2	VSS	power_in	Ground / negative supply reference for the regulator.
3	CE	input	Chip enable (active high). VCEH ≥ 1.6V enables the regulator; VCEL ≤ 0.5V (e.g. tied to VSS) shuts it down (turn-off current typ 0.1µA). CE input current ≤0.5µA for VCE = 0V to VIN. Do not leave floating.
4	NC	unconnected	No internal connection. Leave floating or tie to a convenient net; not electrically bonded to the die.
5	VOUT	power_out	Regulated 3.3V output (±2.5%). Delivers up to 300mA typical with Vin=4.3V. Requires a 10µF ceramic output capacitor (Co) to VSS. Dropout ~35mV at 10mA, ~280mV at 100mA.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

XC6219B332MR
XC6219B332MRPR

CAD (KiCad official)

Symbol: XC6219B332MR
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: UMW datasheet (9 pp, sha256 b0229c0bd1c70b57, 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