RT9013-18GB-MS from MSKSEMI, 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	Input supply pin. Operating range up to 5.5 V (absolute max 7 V). Requires a 1 uF to 10 uF bypass capacitor to GND placed close to the pin.
2	GND	power_in	Device ground return. Common reference for VIN, VOUT and CE.
3	CE	input	Chip Enable (EN). Drive high to enable the regulator; drive low (or leave at 0 V) to place the device in shutdown (<1 uA). Recommended logic-high level is >=1.1 V to cover temperature and process variation. An internal 1 MΩ resistor is present between CE and GND, so the pin should not be left floating.
4	NC	unconnected	No internal connection. Leave floating or tie to GND per PCB convention.
5	VOUT	power_out	Regulated output pin. Fixed 1.8 V nominal on the -18 variant, up to 500 mA output current. Requires a 1 uF to 10 uF output capacitor to GND for stability.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

RT9013-18GB-MS

CAD (KiCad official)

Symbol: RT9013-18GB-MS
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: MSKSEMI datasheet (9 pp, sha256 4db96a23f249c60c, 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