BL8072CLTR50 from BL Shanghai Belling, in a SOT-223-4. 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	Vss/ADJ	power_in	Ground / adjust pin. Tie to GND for the fixed-voltage (5.0V) configuration. In the adjustable configuration this pin is the feedback/ADJ node; Vout = Vref x (1 + R2/R1) + I_ADJ x R2, with I_ADJ ~2 uA. Recommended R1 = 1k-10k, and a 0.1 uF ceramic C_ADJ to ground improves ripple rejection.
2	Vout	power_out	Regulated output. For BL8072CLTR50 this is 5.0V, +/-2% (Vout x0.98 to Vout x1.02). Supplies up to 2A (Iout(Max)=2A when Vin-Vout >= 1V for Vout >= 2.0V). A 1 uF ceramic output capacitor to GND is required for stability.
3	Vdd	power_in	Regulator input (Vin). Recommended operating range up to 18V, absolute maximum 20V. Requires a 1 uF ceramic bypass capacitor to GND. Typical dropout is 850 mV at Iout=1.5A for Vout>=2.0V (Vout=3.3V spec).

Key specifications

Parameter	Value
Manufacturer	BL Shanghai Belling
Package	SOT-223-4
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

BL8072CLTR50
BL8072CLTR50COTR50

CAD (KiCad official)

Symbol: BL8072CLTR50
Footprint: Package_TO_SOT_SMD:SOT-223
3D model: SOT-223-4 (KiCad packages3D, STEP)

Provenance

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

Datasheet: BL Shanghai Belling datasheet (7 pp, sha256 48a7d46f1c8be9ee, 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