AP2127K-3.0TRG1 from Diodes Incorporated AP2127K 3 0TRG1, 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	Power input. Operating input voltage range 2.5V to 6V (absolute max 6.5V). Requires 1µF low-ESR ceramic bypass capacitor to GND.
2	GND	power_in	Device ground reference.
3	Shutdown	input	Active-low enable input (nSHDN). Drive >=1.5V to enable the regulator; drive <=0.5V to place the device in shutdown mode (Istandby ~0.1µA). Internal ~3MΩ pull-down resistance.
4	NC/ADJ	unconnected	No Connection for fixed-voltage versions (AP2127K-3.0 is a fixed 3.0V variant, so this pin is NC). On adjustable variants this pin is the VOUT feedback input (ADJ) for an external resistor divider.
5	VOUT	power_out	Regulated 3.0V power output, up to 300mA continuous (400mA typ current limit, 50mA short-circuit limit). Requires 1µF low-ESR ceramic output capacitor to GND. Auto-discharge MOSFET (~60Ω) pulls VOUT low when disabled.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated AP2127K 3 0TRG1
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

AP2127K-3.0TRG1

CAD (KiCad official)

Symbol: AP2127K-3.0TRG1
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: Diodes Incorporated AP2127K 3 0TRG1 datasheet (24 pp, sha256 d48c96ac985d348a, retrieved 2026-08-17, tier: manufacturer)
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