BL8563-18PRA from BL Shanghai Belling, 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	Supply voltage input, 2.0 V to 6.0 V (8 V abs max). Bypass with 1 uF ceramic to Vss close to the pin.
2	Vss	power_in	Ground / negative supply return for the regulator and reference.
3	CE	input	Chip enable. Drive high (Vceh >= 1.5 V, up to Vin) to enable the regulator; drive low (Vcel <= 0.25 V) to shut down (Istandby = 0.1 uA typ). When CE is low a 1.5 kΩ discharge resistor is switched across Vout. Internal ~500 kΩ pull-down to Vss.
4	NC	unconnected	No internal connection. Leave floating or tie to Vss.
5	Vout	power_out	Regulated output, 1.8 V (±2%) for the -18 option, 300 mA max output current. Bypass with 1 uF ceramic to Vss for stability. Discharged through internal 1.5 kΩ when CE is low.

Key specifications

Parameter	Value
Manufacturer	BL Shanghai Belling
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

BL8563-18PRA
BL8563-18PRAQ
BL8563-18PRARM
BL8563-18PRACKETR
BL8563-18PRACKFTR

CAD (KiCad official)

Symbol: BL8563-18PRA
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: BL Shanghai Belling datasheet (9 pp, sha256 c6fe9ba9214e8e33, 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