APX811-23UG-7 from Diodes Incorporated, in a SOT-143. 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	GND	power_in	Ground reference for the device.
2	RESET	output	Push-pull active-low reset output (APX811 variant). Driven low whenever VCC falls below the reset threshold (2.25V for the -23 option) or MR is pulled low, and held low for the ~200ms reset timeout after VCC returns above threshold. VOL <= 0.4V at ISINK = 3.2mA; VOH >= 0.8*VCC at ISOURCE = 500uA.
3	MR	input	Active-low manual reset input. A logic low (VIL = 0.3*VCC) forces RESET active; minimum pulse width is 100ns. Typically driven by a push-button to ground; may be left floating/tied high if unused.
4	VCC	power_in	Operating supply voltage input and monitored rail. Recommended operating range 1.1V to 5.5V; absolute max 7V. Typical supply current 30uA (max 40uA) at VCC = Vth + 0.2V.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	SOT-143
Category	PMIC
Pins	4

Ordering variants

APX811-23UG-7

CAD (KiCad official)

Symbol: APX811-23UG-7
Footprint: Package_TO_SOT_SMD:SOT-143
3D model: SOT-143 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Diodes Incorporated datasheet (10 pp, sha256 7a730fe754bff472, retrieved 2026-08-17, tier: lcsc)
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