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HG811RM4

Public Made by Adom

by adom

HGSEMI Supervisor And Reset ICs, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HG811RM4

HGSEMI · Supervisor And Reset ICs · SOT-143-4

HG811RM4 from HGSEMI, in a SOT-143-4. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Power supply negative terminal (ground) of the HG811x reset IC.
2 VRESET output Reset output that goes low when VCC falls below Vth or MR is low and goes high Trp (500 ms typical) after VCC returns above Vth or MR returns high; the absolute voltage range is -0.3 V to VCC+0.3 V.
3 MR input Active-low enable control input (VMRH minimum 0.7×VCC, VMRL maximum 0.2×VCC, minimum low pulse width 10 µs).
4 VCC power_in Positive supply input with an operating range of 1.0 V to 6.0 V and an absolute maximum of 6.5 V.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOT-143-4
Category Power Management (PMIC)
Pins 4

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating voltage VCC 1 6 V 4
Quiescent current ICCH 1 5 uA VCC=6V,VMR=VCC,No Load 4
Standby current ICCL 1 32 uA VCC=6V,VMR=GND,No Load 4
Enable pull-up current IMR 1 25 uA VCC=6V,VMR=GND,No Load 4
Output reset time (HG811Z/R/S/T group) Trp 85 500 900 ms VCC=VMR=0 to 3.5V or VMR=0 to 3.5V, VCC=3.5V, No Load 4
Output low voltage VOL 0.5 V VCC=Vthmin，ISINK=3.2mA 4
Input low voltage (MR) VMRL 0 V VCC=6V,VRESET=GND, No Load 4
Enable pulse minimum width tMR 10 us 4
Threshold temperature coefficient Vh/(Vh*T) -200 200 ppm/℃ -20℃≤Ta≤60℃ 4
Supply voltage (absolute maximum) VCC 6.5 V 3
Reset output voltage (absolute minimum) VRESET -0.3 V 3
Power dissipation PD 200 mW SOT-143 3
Operating temperature range TA -20 70 ℃ 3
Storage temperature range TS -50 125 ℃ 3
Soldering temperature TW 260 ℃ 10s 3
Reset threshold voltage (nominal for HG811RM4) Vth 2.63 V Ordering table value for HG811RM4/TR (ARAA) 1
Reset fall time Trd 150 ns VCC=Vth to Vth-100mV 4

CAD (KiCad official)

  • Symbol: HG811RM4
  • Footprint: Package_TO_SOT_SMD:SOT-143
  • 3D model: SOT-143-4 (KiCad packages3D, STEP)
  • 3D model files: hg811rm4-etched.step / hg811rm4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hg811rm4.step / hg811rm4.glb are the bare package body.

Provenance

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

  • Datasheet: HGSEMI datasheet (7 pp, sha256 a75fd3d5b03be350, retrieved 2026-10-20, 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: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF