MEL7138PG-N from MICRONE, in a SOT-89. 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	VDD	power_in	Positive supply input. Operating range 2.7 V to 6.0 V; absolute maximum -0.3 V to +7 V. Feeds the internal bandgap reference and control circuit.
2	GND	power_in	Device ground reference (Vss). Return path for supply and sink current.
3	OUT	output	Constant-current sink output. Connects to the cathode of the driven LED (anode tied to supply). Sinks a regulated current (nominal ~350 mA for the -35 bin; up to 400 mA recommended max). Dropout voltage ~130 mV typ; absolute maximum -0.3 V to +7 V.

Key specifications

Parameter	Value
Manufacturer	MICRONE
Package	SOT-89
Category	LED-drv
Pins	3

Ordering variants

Same part, different packaging or reel option.

MEL7138PG-NP
MEL7138PG-NM
MEL7138PG-NT

CAD (KiCad official)

Symbol: MEL7138PG-N
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89 (KiCad packages3D, STEP)

Provenance

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

Datasheet: MICRONE datasheet (5 pp, sha256 d94695295257fc74, 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