component

AP3441SHE-7B

Public Made by Adom

by adom

Diodes Incorporated Voltage Regulators - DC DC Switching Regulators, DFN2020-8-EP. KiCad symbol, footprint and 3D as used on Adom boards; pin functions from the manufacturer datasheet.

componentpower management (pmic)ap3441she-7bboard-derived

Verified AP3441SHE-7B

by Claude, at Caleb Taylor's request · last 27 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 4 records

27 Oct 2026Claude, at Caleb Taylor's requestValidated against Diodes Incorporated's AP3441/L datasheet (DS39754 Rev. 3 - 2, September 2019); 3D model rebuilt to the package drawingfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓Datasheet: the page's LCSC copy is byte-identical (sha256 c159ff21...) to Diodes' current file at diodes.com/datasheet/download/AP3441.pdf, DS39754 Rev. 3 - 2 September 2019; source tier moved to mfr
  • ✓Pins 1-8 match the Pin Descriptions table and the U-DFN2020-8 (Type E) top-view pin assignment (p.1-2); pin 5 renamed nc -> NC; pin 9 (the footprint's centre pad) is the table's EP 'Exposed Pad', named EP
  • ✓Pin types from the table: FB input (was passive), PG open-drain, VIN/PGND/SGND power, NC no_connect, LX power_out (switch node), EN input, EP passive (no internal connection; tie to the ground plane for heat)
  • ✓Descriptions are the Pin Descriptions table wording (p.2), VIN range from p.1; pin 9 described
  • •Footprint vs package outline and Suggested Pad Layout (p.12): 8 pads 0.50 x 0.30 mm on e = 0.50 mm, centres +/-0.90 mm as the suggested layout (Y 0.50, Y2 2.30); pad width 0.30 vs suggested X 0.35, covers b 0.20-0.30; exposed pad 1.05 x 1.75 mm vs E2 0.80-1.00 x D2 1.60-1.80 (suggested Y1 1.00 x X1 1.80); EP-to-pad gap 0.125 mm vs suggested G 0.15; pin 1 top-left as the p.1 top view
  • ✓DigiKey AP3441SHE-7BDITR-ND and Mouser 621-AP3441SHE-7B confirmed as AP3441SHE-7B by Diodes Incorporated (2026-10-27)
  • ✓3D source: tier 1 none (diodes.com part and package-outline pages answer curl (browser headers) and WebFetch with a Cloudflare challenge (HTTP 403); the datasheet links no STEP. No manufacturer STEP retrievable (2026-10-27).) Tier 2 rejected (KiCad DFN-8-1EP_2x2mm_P0.5mm_EP1.05x1.75mm.step: 0.92 mm tall; VDFN-8-1EP_2x2mm_P0.5mm_EP0.9x1.7mm.step: 0.77 mm tall; A 0.50-0.60: both out of tolerance.) Tier 3: model rebuilt with the KiCad 3D model generator (gitlab.com/kicad/libraries/kicad-packages3D-generator, commit e272fcc8) from Diodes Incorporated AP3441/L datasheet DS39754 Rev. 3 - 2, September 2019, Package Outline Dimensions U-DFN2020-8 (Type E), p.12; marking drawing p.11; parameters in provenance/3d-generator-params.yaml; Adom-authored, CC-BY-SA-4.0
  • ✓3D body vs drawing: body 1.98 x 1.98 mm (the generator insets the body by A1 from 2.00), leads reach 2.00: D/E 1.950-2.075: pass; overall height 0.56 mm (etched 0.565): A 0.50-0.60: pass; standoff 0.02, terminal thickness 0.203: A1 0.00-0.05, A3 0.203: pass; terminals 0.25 x 0.30 at e 0.50, outer edges at x = +/-1.00: b 0.20-0.30, L 0.25-0.35: pass; exposed pad 0.90 x 1.70 mm (x by y, long side along the terminal rows), 0.2 mm chamfer at its pin-1 corner: E2 0.80-1.00, D2 1.60-1.80: pass; terminals at x = -0.85 (y +0.75..-0.75) and +0.85: on footprint pads 1-4 (x -0.9) and 5-8 (x +0.9); pin-1 dot on top at (-0.62, +0.62) mm (KiCad (-0.62, -0.62)), next to pad 1: pass
  • ✓3D pose: ap3441she-7b.step and ap3441she-7b-etched.step are Z-up, seated on z = 0, centred on the footprint origin (offset 0.0 mm), footprint (model) binding identity (step_pose.py); the source was built in the footprint frame, so the transform is identity; the etched file adds the adom-chip-laser MPN inlay on the top face; GLBs from step2glb convert; footprint (model) path now ${KIPRJMOD}/ap3441she-7b.step with only that line changed (pads untouched); provenance/3d-model.json records source, terms, hashes, transform and checks
  • ✓Symbol Datasheet / MPN / Manufacturer / DigiKey / Mouser / LCSC properties agree with page.json; footprint Datasheet property points at the manufacturer datasheet URL
  • ✓component-page-verify: all checks pass
Evidencedatasheet (Diodes Incorporated, DS39754 Rev. 3-2)
Verified files✓ ap3441she-7b.kicad_sym✓ ap3441she-7b.kicad_mod✓ ap3441she-7b.step
8 Oct 2026Claude (AI build)Datasheet pins not matched to a symbol pin: EPsuperseded
reviewfor all variants
  • •Datasheet pins not matched to a symbol pin: EP
8 Oct 2026Claude (AI build)1 of 9 pins have no datasheet description yet (pins 9).superseded
reviewfor all variants
  • •1 of 9 pins have no datasheet description yet (pins 9).
8 Oct 2026Claude (AI build)Automated build checks (awaiting human validation)superseded
SymbolFootprint3D modelPinsfor all variants
  • ✓Footprint extracted pad-for-pad from the source board and normalized to the footprint frame (back-side parts un-mirrored)
  • ✓3D model seated z=0 at footprint origin (placement inverse; method centroid-matched to KiCad library models on 59 cases)
  • ✓adom-lbr generate + lint passed
  • •8 of 9 pins described from the datasheet (adom-ds2sf, page-cited)
  • •Not yet checked by a person: land pattern vs datasheet, pin-1/orientation, 3D body vs drawing
Evidencedatasheet
Verified files! ap3441she-7b.kicad_sym! ap3441she-7b.kicad_mod! ap3441she-7b.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
ap3441she-7b / README.md
History Download
Caleb Publish 0.1.1 4135ca6 1d ago

AP3441SHE-7B

Diodes Incorporated · Voltage Regulators - DC DC Switching Regulators · DFN2020-8-EP

AP3441SHE-7B from Diodes Incorporated, in a DFN2020-8-EP. Symbol and footprint are the ones used on Adom board designs (KiCad official libraries); the 3D model is Adom-generated from Diodes' U-DFN2020-8 (Type E) drawing with the KiCad 3D model generator. Pin functions are extracted from the manufacturer datasheet with page references.

Pinout

Pin Name Type Function
1 FB input Feedback voltage to internal error amplifier, the threshold voltage is 0.6V. [datasheet p.2]
2 PG open_collector Power good indicator, open drain output. PG is pulled up to VIN when the output voltage is within 20% of the regulation level, otherwise it is low. [datasheet p.2]
3 VIN power_in Bias supply. Chip main power supply pin [datasheet p.2]; input voltage 2.7 V to 5.5 V. [datasheet p.1]
4 PGND power_in Power ground pin. [datasheet p.2]
5 NC no_connect No connection. [datasheet p.2]
6 LX power_out The drains of the internal main and synchronous power MOSFET. [datasheet p.2]
7 EN input Enable control input. Force this pin voltage above 1.5V enables the chip, and below 0.4V shuts down the device. [datasheet p.2]
8 SGND power_in Signal ground pin. [datasheet p.2]
9 EP passive Exposed Pad: exposed metal pad on the underside of the package without any electrical connection to internal circuit; connect it to the PC board ground plane to improve heat dissipation. [datasheet p.2]

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package DFN2020-8-EP
Category Power Management (PMIC)
Pins 9
LCSC C2070918
Ordering code AP3441SHE-7B (U-DFN2020-8 Type E, tape and reel, marking 9B)
Mouser 621-AP3441SHE-7B
DigiKey AP3441SHE-7BDITR-ND
Distributor summary (LCSC listing, not datasheet) -40℃+85℃@(TA) 1 1MHz 2.7V5.5V 3A 55uA 600mV~5.5V Adjustable Buck Buck Built-in Yes DFN2020-8-EP DC-DC Converters ROHS

CAD

  • Symbol: ap3441she-7b (source library CM5IO:AP3441SHE-7B)
  • Footprint: Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP1.05x1.75mm
  • 3D model path in footprint: ${KIPRJMOD}/ap3441she-7b.step (Adom-generated with the KiCad 3D model generator from Diodes' U-DFN2020-8 (Type E) table, DS39754 Rev. 3-2 p.12; CC-BY-SA-4.0; source, parameters and checks in provenance/3d-model.json)
  • 3D files: ap3441she-7b-etched.step / ap3441she-7b-etched.glb carry the MPN etch as a separate Adom.LaserEtch part; ap3441she-7b.step / ap3441she-7b.glb are the bare model.
  • EAGLE/Fusion library: ap3441she-7b.lbr (adom-lbr)

Provenance

  • Datasheet: Diodes Incorporated AP3441/L datasheet (DS39754 Rev. 3 - 2, September 2019, sha256 c159ff2133de34dd, retrieved 2026-10-27, tier: mfr)
  • CAD: Footprint and symbol: KiCad official libraries (CC-BY-SA 4.0) as used on Adom boards. 3D model: Adom-generated with the KiCad 3D model generator from Diodes' U-DFN2020-8 (Type E) table (AP3441/L DS39754 Rev. 3-2, p.12), CC-BY-SA-4.0; see provenance/3d-model.json.
  • Pins: KiCad symbol from the source board + adom-ds2sf datasheet extraction (claude-opus-4-7).

Datasheet PDF