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IMP809S-TD

Public Unreviewed

by Ray

TDSEMIC Supervisor and Reset ICs, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Contents

README

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IMP809S-TD

TDSEMIC · Supervisor and Reset ICs · SOT-23-3

IMP809S-TD from TDSEMIC, 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 Chip ground reference.
2 RESET output Active-low reset output. Asserts low when VCC falls below the detection threshold (Vth = 2.93 V typ, ±2.5%). After VCC rises back above Vth, RESET is held low for the reset delay (Trp = 500 ms typ, 100-900 ms) then released high. VOL ≤ 0.3 V at ISINK = 1.2 mA; VOH ≥ 0.8·VCC at ISOURCE = 500 µA.
3 VCC power_in Supply input, 1.0 V to 6.0 V operating range (6.5 V absolute max). Also the monitored voltage from which the reset threshold is derived. Quiescent current ICC = 2 µA typ, 5 µA max at VCC = 5.5 V.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • IMP809S-TD

CAD (KiCad official)

  • Symbol: IMP809S-TD
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
imp809s-td.step 59 KB You want the bare part, or you mark your own boards.
imp809s-td-etched.step 1.8 MB You want the part with IMP809S-TD already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 446 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: TDSEMIC datasheet (3 pp, sha256 8f25e6d90ab67db5, 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