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TPS3306-18DR

Public Made by Adom

by adom

Texas Instruments Supervisor and Reset ICs, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Datasheet

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Contents

README

markdown

TPS3306-18DR

Texas Instruments · Supervisor and Reset ICs · SOIC-8

TPS3306-18DR from Texas Instruments, in a SOIC-8. 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 SENSE1 input Sense voltage input 1. Monitored against internal threshold V_IT1 (typ 2.93 V for TPS3306-18). RESET asserted low when SENSE1 falls below V_IT1.
2 SENSE2 input Sense voltage input 2. Monitored against internal threshold V_IT2 (typ 1.68 V for TPS3306-18). RESET asserted low when SENSE2 falls below V_IT2.
3 PFI input Power-fail comparator input. Compared against internal 1.25 V reference (with ~10 mV hysteresis). Tie to GND if the power-fail comparator is unused.
4 GND power_in Ground reference for the device.
5 RESET output Active-low reset output, open-drain. Asserted low during power-up, when either SENSE input drops below its threshold, or on watchdog time-out. Requires external pull-up resistor.
6 PFO output Power-fail comparator output, open-drain. Goes low when PFI drops below the 1.25 V reference. Requires external pull-up resistor.
7 WDI input Watchdog timer input. Must see a low-to-high or high-to-low transition within t_t(out) ~ 0.8 s to prevent RESET assertion. Leave unconnected to disable the watchdog.
8 VDD power_in Supply voltage input. Operating range 1.1 V to 6 V (RESET is defined for VDD >= 1.1 V). Typical supply current 15 uA.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • TPS3306-18DR
  • TPS3306-18DRD
  • TPS3306-18DRDGK
  • TPS3306-18DRDGKR

CAD (KiCad official)

  • Symbol: TPS3306-18DR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: tps3306-18dr-etched.step / tps3306-18dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps3306-18dr.step / tps3306-18dr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
tps3306-18dr.step 122 KB You want the bare part, or you mark your own boards.
tps3306-18dr-etched.step 2.8 MB You want the part with TPS3306-18DR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 663 faces against 147 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: Texas Instruments datasheet (18 pp, sha256 3855f7b133f40a4c, retrieved 2026-08-17, tier: manufacturer)
  • 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