HG810LM3 from HGSEMI, in a SOT-23-3. 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. Chip ground terminal.
2	RESET	output	Active-low reset output (push-pull). Drives low when VCC is above the 4.63 V detection threshold (Vth); pulled high when VCC falls below Vth and for a ~500 ms delay (Trp) after VCC recovers. VOL ≤ 0.3 V at ISINK = 1.2 mA; VOH ≥ 0.8·VCC at ISOURCE = 150 µA (1.8 V < VCC < Vth,min).
3	VCC	power_in	Supply / sense input, 1.0 V to 6.0 V (absolute max 6.5 V). Voltage monitored against the 4.63 V (±2.5%) detection threshold for the HG810LM3 variant. Typical quiescent current 2 µA at VCC = 5.5 V, no load.

Key specifications

Parameter	Value
Manufacturer	HGSEMI
Package	SOT-23-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

HG810LM3/TR

CAD (KiCad official)

Symbol: HG810LM3
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HGSEMI datasheet (6 pp, sha256 617dd8734b6693f4, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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