component
HX3141-AF
Public Made by Adomby adom
HEXIN DC-DC Converters, SOT-23-6L. 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
markdownHX3141-AF
HEXIN · DC-DC Converters · SOT-23-6L
HX3141-AF from HEXIN, in a SOT-23-6L. 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 | GND | power_in | Signal and power ground; provide a short direct PCB path between GND and the (-) side of the output capacitor(s). |
| 2 | SW | output | Switch pin; connect the inductor between SW and VIN and keep the PCB trace as short and wide as possible to reduce EMI and voltage overshoot. |
| 3 | GND | power_in | Ground, listed together with pin 1 as GND (Pin 1/3) in the pin table. |
| 4 | FB | input | Feedback input to the gm error amplifier; connect the resistor divider tap here, with VOUT = 1.212V × [1 + (R1/R2)] adjustable from 1.8V to 5.5V. |
| 5 | VDD | power_in | Input positive power pin; the PCB layout guide calls for a 20-100µF bypass capacitor between this pin and pin 1. |
| 6 | EN | input | Enable control input; forcing it above 1V enables the part and forcing it below 0.6V shuts the device down, and it must not be left floating. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HEXIN |
| Package | SOT-23-6L |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Voltage range | VIN | 1.1 | 5.5 | V | 3 | ||
| Feedback Reference Voltage | VFB | 1.182 | 1.212 | 1.242 | V | Close Loop, VDD=3.3V | 3 |
| Enable Input High | VENH | 1 | V | 3 | |||
| Enable Input Low | VENL | 0.6 | V | 3 | |||
| Start-up Voltage | VSTART | 1.1 | V | ILOAD=1mA | 3 | ||
| No Load Current (VIN) | INO | 70 | μA | VIN=1.5V, VOUT=3.3V | 3 | ||
| Switching Frequency | fOSC | 450 | kHz | VDD=3.3V | 3 | ||
| SW ON Resistance | RON | 0.07 | Ω | VDD=3.3V | 3 | ||
| Line Regulation | ΔVLINE | 25 | mV/V | VIN=1.5V ～ 2.5V, ILOAD=100mA | 3 | ||
| Load Regulation | ΔVLOAD | 0.05 | mV/mA | VIN=2.5V, ILOAD=1mA ～ 300mA | 3 | ||
| Supply Voltage | -0.3 | 6 | V | 2 | |||
| SW Pin Switch Voltage | -0.3 | 6 | V | 2 | |||
| Other I/O Pin Voltages | -0.3 | 6 | V | 2 | |||
| SW Pin Switch Current | 4 | A | 2 | ||||
| Operating Junction Temperature | -40 | 125 | ℃ | 2 | |||
| Storage Temperature Range | -65 | 150 | ℃ | 2 | |||
| Lead Temperature (Soldering 10 sec.) | 265 | ℃ | Soldering 10 sec. | 2 | |||
| Output Voltage Adjustment Range | VOUT | 1.8 | 5.5 | V | Set by VOUT = 1.212V • [1 + (R1/R2)] | 5 |
CAD (KiCad official)
- Symbol:
HX3141-AF - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files:
hx3141-af-etched.step/hx3141-af-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);hx3141-af.step/hx3141-af.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HEXIN datasheet (7 pp, sha256
2e780b1e0e05dce7, retrieved 2026-10-18, 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).