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TPS3305-18DGNR

Public Made by Adom

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Texas Instruments Supervisor And Reset ICs, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)tps3305-18dgnrfactory-2.0.0extractor-text

Verified TPS3305-18DGNR

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TPS3305-18DGNR · MSOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 20-page datasheet
  • ✓distributor: lcsc C2066987, digikey 296-3299-2-ND, mouser 595-TPS3305-18DGNR
  • ✓family: MSOP-8_3x3mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ncanrpbb/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tps3305-18dgnr.kicad_sym✓ tps3305-18dgnr.kicad_mod✓ tps3305-18dgnr.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 1d ago
viewers tps3305-18dgnr: viewers · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
tps3305-18dgnr-etched.glb Publish 0.1.0 · Ray 1d ago
tps3305-18dgnr-etched.step tps3305-18dgnr: factory component page (tier=mfr) · Ray 1d ago
tps3305-18dgnr-hero.glb tps3305-18dgnr: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
tps3305-18dgnr-hero.overlay.json Publish 0.1.0 · Ray 1d ago
tps3305-18dgnr.glb Publish 0.1.0 · Ray 1d ago
tps3305-18dgnr.kicad_mod Publish 0.1.0 · Ray 1d ago
tps3305-18dgnr.kicad_sym Publish 0.1.0 · Ray 1d ago
tps3305-18dgnr.lbr Publish 0.1.0 · Ray 1d ago
tps3305-18dgnr.step Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier mfr, 8 pins · Ray 1d ago

TPS3305-18DGNR

Texas Instruments · Supervisor And Reset ICs · MSOP-8

TPS3305-18DGNR from Texas Instruments, in a MSOP-8. 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 SENSE1 input Sense voltage input 1; RESET is asserted when this input falls below its threshold, which is 2.93 V typ for the TPS3305-18.
2 SENSE2 input Sense voltage input 2; RESET is asserted when this input falls below its threshold, which is 1.68 V typ for the TPS3305-18.
3 WDI input Watchdog timer input; RESET is asserted if WDI is not toggled for more than 1.6 s typ, with VIH of 0.7 x VDD and VIL of 0.3 x VDD.
4 GND power_in Ground reference; all voltage ratings in the datasheet are stated with respect to GND.
5 RESET output Active-low reset output, asserted low when a SENSEn input is below its threshold, WDI times out, or MR is low.
6 RESET output Active-high reset output, the complement of the active-low RESET output.
7 MR input Manual reset input; driving MR low asserts RESET, with VIH of 0.7 x VDD and VIL of 0.3 x VDD.
8 VDD power_in Supply voltage input, specified from 2.7 V to 6 V, with RESET defined from VDD of 1.1 V and above.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package MSOP-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage range (VDD input supply range) VDD 2.7 6 V 3
Operating junction temperature range TJ -40 85 °C 3
Supply voltage range, absolute maximum VDD -0.3 7 V All voltage values with respect to GND 2
Reset output voltage range, absolute maximum VRESET, VRESET -0.3 7 V 2
Maximum low output current IOL 5 mA 2
Maximum high output current IOH -5 mA 2
Input clamp current IIK -20 20 mA VI < 0 or VI > VDD 2
Output clamp current IOK -20 20 mA VO < 0 or VO > VDD 2
Storage temperature range Tstg -65 150 °C 2
Soldering temperature 260 °C 2
Continuous total power dissipation, DGN package PD 2.14 W DGN package, TA ≤ +25°C 2
Power rating derating factor, DGN package 17.1 mW/°C DGN package, above TA = +25°C 2
Negative-going input threshold voltage, SENSE1 (3.3V supervised) VIT- 2.86 2.93 3 V VDD = 2.7V to 6V, TA = 0°C to +85°C 3
Negative-going input threshold voltage, SENSE2 (1.8V supervised) VIT- 1.64 1.68 1.72 V VDD = 2.7V to 6V, TA = 0°C to +85°C 3
Negative-going input threshold voltage, SENSE1 (3.3V supervised) VIT- 2.86 2.93 3.02 V VDD = 2.7V to 6V, TA = -40°C to +85°C 3
Negative-going input threshold voltage, SENSE2 (1.8V supervised) VIT- 1.64 1.68 1.73 V VDD = 2.7V to 6V, TA = -40°C to +85°C 3
Low-level output voltage VOL 0.2 V VDD = 2.7V to 6V, IOL = 20µA 3
Low-level output voltage VOL 0.4 V VDD = 3.3V, IOL = 2mA 3
Power-up reset voltage 0.4 V VDD ≥ 1.1V, IOL = 20µA 3
Hysteresis at VSENSEn input Vhys 15 mV VIT- = 1.68V 3
Hysteresis at VSENSEn input Vhys 30 mV VIT- = 2.93V 3
Average high-level input current, WDI IH(AV) 100 150 µA WDI = VDD = 6V, time average (dc = 88%) 3
Average low-level input current, WDI IL(AV) -15 -20 µA WDI = 0V, VDD = 6V, time average (dc = 12%) 3
High-level input current, WDI IIH 120 170 µA WDI = VDD = 6V 3
High-level input current, MR IIH -130 -180 µA MR = 0.7 × VDD, VDD = 6V 3
High-level input current, SENSE1 IIH 5 8 µA VSENSE1 = VDD = 6V 3
High-level input current, SENSE2 IIH 6 9 µA VSENSE2 = VDD = 6V 3
Low-level input current, WDI IIL -120 -170 µA WDI = 0V, VDD = 6V 3
Low-level input current, MR IIL -430 -600 µA MR = 0V, VDD = 6V 3
Low-level input current, SENSEn IIL -1 1 µA VSENSE1,2 = 0V 3
Supply current IDD 40 µA 3
Input capacitance CI 10 pF VI = 0V to VDD 3
Watchdog time-out t(out) 1.1 1.6 2.3 s VI(SENSEn) ≥ VIT+ +0.2V, MR ≥ 0.7 × VDD, see Timing Diagram 4
Delay time td 140 200 280 ms VI(SENSEn) ≥ VIT+ +0.2V, MR ≥ 0.7 × VDD, see Timing Diagram 4
Pulse width, SENSEn tw 6 µs VSENSEnL = VIT- -0.2V, VSENSEnH = VIT+ +0.2V 4
Pulse width, MR tw 100 ns 4
Pulse width, WDI tw 100 ns VIH = 0.7 × VDD, VIL = 0.3 × VDD 4
Propagation delay time, MR to RESET, high-to-low level output tPHL 200 500 ns VI(SENSEn) ≥ VIT+ +0.2V, VIH = 0.7 × VDD, VIL = 0.3 × VDD 4
Propagation delay time, MR to RESET, low-to-high level output tPLH 200 500 ns VI(SENSEn) ≥ VIT+ +0.2V, VIH = 0.7 × VDD, VIL = 0.3 × VDD 4
Propagation delay time, SENSEn to RESET, high-to-low level output tPHL 1 5 µs VIH = VIT+ +0.2V, VIL = VIT- -0.2V, MR ≥ 0.7 × VDD 4
Propagation delay time, SENSEn to RESET, low-to-high level output tPLH 1 5 µs VIH = VIT+ +0.2V, VIL = VIT- -0.2V, MR ≥ 0.7 × VDD 4

CAD (KiCad official)

  • Symbol: TPS3305-18DGNR
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: tps3305-18dgnr-etched.step / tps3305-18dgnr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps3305-18dgnr.step / tps3305-18dgnr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (20 pp, sha256 2ae8290d9b80ba2a, retrieved 2026-11-05, tier: manufacturer)
  • 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