AP2151DWG-7 from Diodes Incorporated, in a SOT-25-5. 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	OUT	power_out	Voltage output pin from the internal high-side power switch. Drives the downstream USB/load rail; a 0.1 µF ceramic (and typically a 120 µF bulk) capacitor to GND is recommended. When EN is de-asserted, this pin is discharged through an internal ~100 Ω NMOS.
2	GND	power_in	Device ground reference. Return path for the power switch and internal control circuitry.
3	FLG	output	Open-drain over-current / over-temperature fault report output. Pulled low (active) after a 7 ms (typ) deglitch when an over-current or thermal-shutdown event is detected. Requires an external pull-up resistor (e.g. 10 kΩ) to a logic rail; FLG-FET on-resistance is ~20 Ω at 10 mA.
4	EN	input	Active-high enable input for the AP2151D. VIH ≥ 2.0 V turns the switch on; VIL ≤ 0.8 V turns it off and activates the output-discharge path. Input leakage ≤ 1 µA at VEN = 5 V; max VEN = 6.5 V. Do not leave floating.
5	IN	power_in	Voltage input pin, 2.7 V to 5.5 V operating (6.5 V absolute max). Supplies both the internal control circuitry and the source of the pass MOSFET. A 0.01-0.1 µF X7R/X5R ceramic bypass capacitor close to the pin is recommended, plus a bulk cap (≥10 µF) for heavy loads. UVLO releases at ~1.9 V.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-25-5
Category	PMIC
Pins	5

Ordering variants

AP2151DWG-7
AP2151DWG-7AP2151DSG-13
AP2151DWG-7AP2151DMPG-13
AP2151DWG-7AP2151DFMG-7

CAD (KiCad official)

Symbol: AP2151DWG-7
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-25-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ap2151dwg-7.step`	85 KB	You want the bare part, or you mark your own boards.
`ap2151dwg-7-etched.step`	1.7 MB	You want the part with `AP2151DWG-7` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 427 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 (18 pp, sha256 781650a6c67afd9a, 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