component
HG809SM3
Public Made by Adomby adom
HGSEMI Supervisor And Reset ICs, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownHG809SM3
HGSEMI · Supervisor And Reset ICs · SOT-23-3
HG809SM3 from HGSEMI, in a SOT-23-3. 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 | Chip ground pin. |
| 2 | RESET | output | Reset output: VOL is at most 0.3 V at ISINK = 1.2 mA when VCC = Vthmin, and VOH is at least 0.8×VCC at ISOURCE = 500 µA when VCC > Vthmax; the absolute range is -0.3 V to VCC+0.3 V. |
| 3 | VCC | power_in | Chip supply input; operating range is 1.0 V to 6.0 V, and the absolute maximum input voltage is 6.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| Package | SOT-23-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
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 | 3 | ||
| Reset voltage (multiplier of nominal Vth(E); nominal 2.93 V for HG809SM3) | Vth（1） | 0.975 | 1.025 | x Vth(E) | VCC=Vth+0.5V to Vth，空载，VRESET =VCC to GND | 3 | |
| Power-on reset time (R/S/T group, applies to S variant) | Trp | 80 | 350 | ms | VCC=0to3.5V，空载 | 3 | |
| Reset output low voltage | VOL | 0.3 | V | VCC=Vthmin，ISINK=1.2mA | 3 | ||
| Reset output high voltage (multiplier of VCC) | VOH | 0.8 | x VCC | VCC>Vthmax，ISOURCE=500uA | 3 | ||
| Temperature coefficient (printed ±150 ppm/℃) | ΔVth/(Vth*ΔTa) | -150 | 150 | ppm/℃ | -40℃≤Ta≤85℃ | 3 | |
| Input voltage (absolute maximum) | VCC | 6.5 | V | 3 | |||
| Reset output voltage (lower limit; upper limit printed as VCC+0.3 V) | VRESET | -0.3 | V | 3 | |||
| Power dissipation, SOT-23 | PD | 200 | mW | 3 | |||
| Operating temperature range | Tw | -40 | 85 | ℃ | 3 | ||
| Storage temperature range | Tc | -55 | 125 | ℃ | 3 | ||
| Operating junction temperature range | Tj | -40 | 85 | ℃ | 3 | ||
| Soldering temperature | Th | 260 | ℃ | 10s | 3 |
CAD (KiCad official)
- Symbol:
HG809SM3 - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
hg809sm3-etched.step/hg809sm3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hg809sm3.step/hg809sm3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (6 pp, sha256
4dd29334cac9e274, retrieved 2026-10-18, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).