component

BCT3401EUK-TR

Public Made by Adom

by adom

BROADCHIP DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BCT3401EUK-TR

BROADCHIP · DC-DC Converters · SOT-23-5

BCT3401EUK-TR from BROADCHIP, in a SOT-23-5. 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 EN input Chip enable pin: high turns the chip on and low turns it off; the datasheet gives EN low at 0.7V max and EN high at 1.1V min.
2 GND power_in Power ground pin.
3 LX output Switching output pin; the absolute maximum rating for LX is -0.3V to VIN+0.3V.
4 VIN power_in Power input, operating range 2.5V to 5.5V, which must be closely decoupled to GND with a 4.7µF or greater ceramic capacitor.
5 FB input Feedback voltage pin; the feedback voltage is 0.1V typical (0.09V to 0.11V), and the absolute maximum rating is -0.3V to VIN+0.3V.

Key specifications

Parameter Value
Manufacturer BROADCHIP
Package SOT-23-5
Category Power Supply Chip
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Feedback Voltage VFB 0.09 0.1 0.11 V 5
Input Supply Voltage VIN 2.5 5.5 V 5
Input Supply Voltage -0.3 6.5 V 4
EN, FB, LX pin voltage -0.3 V 4
Storage Temperature Range -65 150 ℃ 4
Junction Temperature 150 ℃ 4
Operating Temperature Range -40 85 ℃ 4
Operating Voltage Range 2.5 5.5 V 4
Operating Temperature Range -40 85 ℃ 4

CAD (KiCad official)

  • Symbol: BCT3401EUK-TR
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: bct3401euk-tr-etched.step / bct3401euk-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bct3401euk-tr.step / bct3401euk-tr.glb are the bare package body.

Provenance

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

  • Datasheet: BROADCHIP datasheet (7 pp, sha256 ecc438956c5bd281, retrieved 2026-10-19, tier: lcsc)
  • 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