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max809mm3-4-38

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HGSEMI MAX809MM3 4 38 TR Supervisor and Reset ICs, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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MAX809MM3-4.38

HGSEMI MAX809MM3 4 38 TR · Supervisor and Reset ICs · SOT-23

MAX809MM3-4.38 from HGSEMI MAX809MM3 4 38 TR, in a SOT-23. 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 Chip ground reference. Connect to system ground.
2 ~{RESET} output Active-low reset output. Driven low when VCC drops below Vth (4.38 V nominal for the -4.38 variant) and held low for ~200 ms (typ., 80-350 ms) after VCC rises above Vth. VOL ≤ 0.3 V at ISINK=1.2 mA; VOH ≥ 0.8·VCC at ISOURCE=500 µA. Absolute-max range -0.3 V to VCC+0.3 V.
3 VCC power_in Chip supply input and monitored voltage. Operating range 1.0 V to 6.0 V; absolute-max 6.5 V. Quiescent current 5.5 µA typ. at VCC=6 V. Internal comparator asserts RESET when VCC falls below Vth (4.38 V nominal, ±2.5%).

Key specifications

Parameter Value
Manufacturer HGSEMI MAX809MM3 4 38 TR
Package SOT-23
Category PMIC
Pins 3

Ordering variants

  • MAX809MM3-4.38/TR

CAD (KiCad official)

  • Symbol: MAX809MM3-4.38
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: HGSEMI MAX809MM3 4 38 TR datasheet (6 pp, sha256 9583e5dc537e4ff6, 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

Symbol & Footprint

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Datasheet

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