AP2210K-5.0TRG1 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	Unregulated supply input. Recommended operating range 2.5V to 13.2V (absolute max 15V). Bypass with a 1.0µF ceramic capacitor to GND close to the pin.
2	GND	power_in	Device ground reference. Also carries quiescent current (typ 1.3mA at 150mA load).
3	EN	input	Enable input, CMOS/TTL compatible. Logic high (VEN ≥ 2.0V) enables the regulator; logic low (VEN ≤ 0.4V) shuts it down (<1µA standby). Absolute max 15V, recommended 0-13.2V. Do not leave floating.
4	BYP	passive	Bypass capacitor pin for low-noise operation on fixed-output (5.0V) versions. Connect a 100pF ceramic capacitor from BYP to GND to reduce output noise. On the ADJ variant this pin becomes the feedback ADJ input (not applicable to AP2210K-5.0).
5	VOUT	power_out	Regulated 5.0V output, up to 300mA. Requires ≥2.2µF ceramic output capacitor for stability. Includes over-current (450mA typ current limit), thermal, and reverse-current protection.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

AP2210K-5.0TRG1K
AP2210K-5.0TRG1W

CAD (KiCad official)

Symbol: AP2210K-5.0TRG1
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 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