component

LT1641-1CS8#TRPBF

Public Made by Adom

by adom

Analog Devices Surge Suppressors, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttvs-fuse-board level protectionlt1641-1cs8#trpbffactory-2.0.0extractor-text

Verified LT1641-1CS8#TRPBF

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 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: LT1641-1CS8#TRPBF · SO-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 12-page datasheet
  • ✓distributor: lcsc C664551, digikey LT1641-1CS8#TRPBFTR-ND, mouser 584-LT1641-1CS8TRPBF
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-fd1p27j4/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.12)
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lt1641-1cs8-trpbf.kicad_sym✓ lt1641-1cs8-trpbf.kicad_mod✓ lt1641-1cs8-trpbf.step
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
lt1641-1cs8-trpbf / README.md
History Download
Ray Publish 0.1.0 e600a62 10d ago

LT1641-1CS8#TRPBF

Analog Devices · Surge Suppressors · SO-8

LT1641-1CS8#TRPBF from Analog Devices, in a SO-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 ON input Undervoltage lockout input: GATE is pulled low when ON falls below the 1.233V high-to-low threshold and turns back on above the 1.313V low-to-high threshold.
2 FB input Power-good comparator input that monitors the output through an external resistive divider; PWRGD goes low below 1.233V and releases above 1.313V, and FB also sets the foldback current limit.
3 PWRGD output Open-collector power-good output to GND that is pulled low when FB is below 1.233V and goes high-impedance above 1.313V; an external pull-up may be taken as high as 100V.
4 GND power_in Chip ground reference for the device.
5 TIMER passive Timing input where an external capacitor sets the maximum time in current limit before GATE is pulled low at 1.233V; use no less than 1.5nF for C2.
6 GATE output High-side gate drive for the external N-channel FET, giving at least 10V gate drive above VCC of 20V and 4.5V between 10.8V and 20V; absolute maximum rating is 100V.
7 SENSE input Current-limit sense input: the sense resistor sits between VCC and SENSE, regulating VCC-VSENSE to 47mV when VFB is 0.5V or higher and folding back to 12mV at VFB = 0V; absolute maximum is 100V, and shorting SENSE to VCC defeats current limit.
8 VCC power_in Positive supply input rated 9V to 80V for normal operation (ICC typically 2mA), with an internal undervoltage lockout that disables the chip below 8.3V and an absolute maximum of 100V.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package SO-8
Category TVS/Fuse/Board Level Protection
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
VCC Operating Range VCC 9 80 V 2
VCC Supply Current ICC 2 5.5 mA ON = 3V 2
VCC Undervoltage Lockout VLKO 7.5 8.3 8.8 V 2
FB Pin High Voltage Threshold VFBH 1.28 1.313 1.345 V FB Low to High Transition 2
FB Pin Low Voltage Threshold VFBL 1.221 1.233 1.245 V FB High to Low Transition 2
SENSE Pin Trip Voltage (VCC, VSENSE) VSENSETRIP 8 12 17 mV VFB = 0V 2
SENSE Pin Trip Voltage (VCC, VSENSE) VSENSETRIP 39 47 55 mV VFB = 1V 2
GATE Pin Pull-Up Current IGATEUP -5 -10 -20 µA Charge Pump On, VGATE = 7V 2
GATE Pin Pull-Down Current IGATEDN 35 70 100 mA Any Fault Condition, VGATE = 2V 2
External N-Channel Gate Drive ∆VGATE 4.5 18 V VCC = 10.8V to 20V 2
External N-Channel Gate Drive ∆VGATE 10 18 V VCC = 20V to 80V 2
TIMER Pin Pull-Up Current ITIMERUP -24 -80 -132 µA VTIMER = 0V 2
TIMER Pin Pull-Down Current ITIMERON 1.5 3 5 µA VTIMER = 1V 2
ON Pin High Threshold VONH 1.28 1.313 1.345 V ON Low to High Transition 2
ON Pin Low Threshold VONL 1.221 1.233 1.245 V ON High to Low Transition 2
Response time SENSE to GATE low (VCC, SENSE high to GATE low) tPHLSENSE 0.5 1 2 µs Figures 1, 4 3
VCC pin absolute voltage VCC -0.3 100 V 2
Input Voltage (SENSE) VSENSE -0.3 100 V 2
Input Voltage (TIMER) VTIMER -0.3 44 V 2
Input Voltage (FB, ON) VFB, VON -0.3 60 V 2
Output Voltage (PWRGD) VPWRGD -0.3 100 V 2
Output Voltage (GATE) VGATE -0.3 100 V 2
Storage Temperature Range -65 150 °C 2
Lead Temperature (Soldering) 300 °C Soldering, 10 sec 2
Operating Temperature Range (C grade) 0 70 °C LT1641-1C 2
Maximum Junction Temperature TJMAX 125 °C 2
Thermal Resistance, Junction to Ambient θJA 110 °C/W TJMAX = 125°C 2

CAD (KiCad official)

  • Symbol: LT1641-1CS8#TRPBF
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Analog Devices datasheet (12 pp, sha256 00aa5309da79d653, retrieved 2026-10-30, 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