AP2210K-ADJTRG1 from Diodes Incorporated, 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 input voltage. Recommended operating range 2.5V to 13.2V; absolute maximum 15V. Should be decoupled to GND with a 1.0µF input capacitor close to the pin.
2	GND	power_in	Device ground reference. Carries the regulator quiescent current plus pass-transistor base current (IGND typ 1.3mA at 150mA load).
3	EN	input	Enable input, CMOS/TTL compatible. Logic high (VIH >= 2.0V) enables the regulator; logic low (VIL <= 0.4V) forces shutdown. Absolute maximum VEN = 15V; recommended range 0 to 13.2V. Do not leave floating.
4	BYP/ADJ	input	On the ADJ version (AP2210-ADJ) this pin is the feedback/adjust input to the error amplifier; VOUT = 1.25V * (1 + R2/R1) is set by an external divider from VOUT to ADJ to GND. On fixed-output versions this pin serves as the noise bypass (a 100pF capacitor from BYP to GND lowers output noise).
5	VOUT	power_out	Regulated output voltage, up to 300mA. Requires a 2.2µF (or larger) output capacitor to GND for stability. Current-limited (typ 450mA, max 900mA) and protected against over-temperature and reverse current.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

AP2210K-ADJTRG1

CAD (KiCad official)

Symbol: AP2210K-ADJTRG1
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ap2210k-adjtrg1.step`	85 KB	You want the bare part, or you mark your own boards.
`ap2210k-adjtrg1-etched.step`	2.3 MB	You want the part with `AP2210K-ADJTRG1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 575 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: Diodes Incorporated datasheet (30 pp, sha256 8d83ef61593fff5e, 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