component
BCT3401EUK-TR
Public Made by Adomby adom
BROADCHIP DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBCT3401EUK-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bct3401euk-tr.step/bct3401euk-tr.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).