component
QX2303L50E
Public Made by Adomby adom
QX Micro Devices DC-DC Converters, SOT-89-3. 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
markdownQX2303L50E
QX Micro Devices · DC-DC Converters · SOT-89-3
QX2303L50E from QX Micro Devices, in a SOT-89-3. 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 | Power ground. |
| 2 | VOUT | power_in | Voltage input/output sense pin (listed as input voltage), maximum 7 V; start-up voltage 0.8 V typ at 1 mA load. |
| 3 | LX | output | Switch signal output to the inductor, maximum 7 V and 1000 mA, with a current limit of 600 to 1000 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | QX Micro Devices |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | 0.7 | V | 6 | |||
| Start-up voltage | VSTART | 0.8 | V | ILOAD=1mA, VIN from 0V to 2V | 6 | ||
| Hold voltage | VHOLD | 0.6 | V | ILOAD=1mA, VIN from 2V to 0V | 6 | ||
| Current limit | ILIMIT | 600 | 800 | 1000 | mA | 6 | |
| Output voltage accuracy | ΔVOUT | -2.5 | 2.5 | % | 6 | ||
| No-load input current | IIN0 | 15 | uA | VIN=1.8V, VOUT=3.3V | 6 | ||
| Maximum oscillation frequency | FMAX | 300 | KHz | 6 | |||
| Maximum duty cycle | DCOSC | 83 | % | 6 | |||
| Maximum voltage at VOUT and LX | VMAX | 7 | V | 5 | |||
| LX maximum current | ILX_MAX | 1000 | mA | 5 | |||
| SOT-89-3 maximum power dissipation | PSOT-89-3 | 0.5 | W | 5 | |||
| Operating temperature range | TA | -20 | 85 | °C | 5 | ||
| Storage temperature range | TSTG | -40 | 125 | °C | 5 | ||
| Soldering temperature | TSD | 230 | 240 | °C | time less than 30 s | 5 | |
| ESD voltage (HBM) | VESD | 2000 | V | human body model | 5 |
CAD (KiCad official)
- Symbol:
QX2303L50E - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
qx2303l50e-etched.step/qx2303l50e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);qx2303l50e.step/qx2303l50e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: QX Micro Devices datasheet (14 pp, sha256
80cb4ae49c2e83f6, retrieved 2026-10-22, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).