AP3211KTR-G1 from Diodes Incorporated, in a SOT-23-6. 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	BS	passive	Bootstrap pin. A bootstrap capacitor (typ. 10nF) is connected between BS and SW to generate the gate-drive rail for the internal high-side NMOS switch. Absolute-max voltage is VSW + 6V.
2	GND	power_in	Device ground return pin.
3	FB	input	Feedback pin. Connect to an external resistor divider from VOUT to set the output voltage; regulates to VFB = 0.81V (typ). If VFB exceeds ~20% above nominal (~0.972V) OVP triggers; if VFB < 0.25V the oscillator frequency is folded back (~460kHz) for short-circuit protection. Absolute max -0.3V to 6V.
4	EN	input	Enable/control input. Drive above 1.5V to enable the IC; drive below 0.4V to shut it down (shutdown supply current ~0.1μA typ, 1μA max). Absolute-max voltage -0.3V to VIN+0.3V.
5	IN	power_in	Supply input pin. Operating range 4.5V-18V (absolute max 20V). A local input decoupling capacitor (typ. 10μF) to GND is required to keep the DC input voltage stable.
6	SW	power_out	Power switch output. Connects to the external inductor, freewheeling Schottky diode (asynchronous), and bootstrap capacitor. Absolute-max voltage 21V.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-23-6
Category	PMIC
Pins	6

Ordering variants

AP3211KTR-G1

CAD (KiCad official)

Symbol: AP3211KTR-G1
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ap3211ktr-g1.step`	97 KB	You want the bare part, or you mark your own boards.
`ap3211ktr-g1-etched.step`	1.9 MB	You want the part with `AP3211KTR-G1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 492 faces against 117 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 (11 pp, sha256 e19ceaa554a5443e, 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