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QX2303L50TO
Public Made by Adomby adom
QX Micro Devices DC-DC Converters, TO-92-3. 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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Contents
README
markdownQX2303L50TO
QX Micro Devices · DC-DC Converters · TO-92-3
QX2303L50TO from QX Micro Devices, in a TO-92-3. 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 | Ground pin of the QX2303L50TO converter. |
| 2 | VOUT | power_out | Output voltage pin (5.0V option), also the sense input; absolute maximum voltage on VOUT is 7 V. |
| 3 | LX | passive | Switching pin connected to the inductor and diode and to the internal power MOSFET; maximum LX current 1000 mA and maximum voltage 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | QX Micro Devices |
| Package | TO-92-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Current Limiting | ILIMIT | 600 | 800 | 1000 | mA | 6 | |
| Output Voltage Accuracy | ΔVOUT | -2.5 | 2.5 | % | 6 | ||
| Maximum Input Voltage | VIN_MAX | 0.7 | VOUT | 6 | |||
| "High" Voltage Level On EN Pin | 0.4 | VOUT | 6 | ||||
| "Low" Voltage Level On EN Pin | 0.2 | V | 6 | ||||
| "High" EN input current | 0.1 | uA | 6 | ||||
| "Low" EN input current | -0.1 | uA | 6 | ||||
| Standby Input Current | IINQ | 1 | uA | Without Load, EN="Low" | 6 | ||
| Maximum Voltage On VOUT and VLX Pins | VMAX | 7 | V | 5 | |||
| Voltage Range On EN Pin | VMIN_MAX | -0.3 | V | Max is VOUT+0.3 | 5 | ||
| Maximum Current On LX Pin | ILX_MAX | 1000 | mA | 5 | |||
| Maximum Power Dissipation TO-92 | PTO-92 | 0.75 | W | 5 | |||
| Operating Temperature Range | TA | -20 | 85 | °C | 5 | ||
| Storage Temperature Range | TSTG | -40 | 120 | °C | 5 | ||
| Soldering Temperature TO-92 | TSD2 | 250 | 260 | °C | less than 5 sec | 5 | |
| ESD Voltage Human Body Mode | VESD | 2000 | V | 5 | |||
| Start-up Voltage | VSTART | 0.8 | V | ILOAD=1mA, VIN rises from 0V to 2V | 6 | ||
| Hold-on Voltage | VHOLD | 0.6 | V | ILOAD=1mA, VIN falls from 2V to 0V | 6 | ||
| Input Current Without Load | IIN0 | 15 | uA | VIN=1.8V, VOUT=3.3V | 6 | ||
| Maximum Oscillation Frequency | FMAX | 300 | KHz | 6 | |||
| Maximum Duty Cycle | DOSC | 83 | % | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | Abs | ESD VESD ESD Voltage for Human Body Mode 2000 V Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Exposure to | 5 |
CAD (KiCad official)
- Symbol:
QX2303L50TO - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files:
qx2303l50to-etched.step/qx2303l50to-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);qx2303l50to.step/qx2303l50to.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: QX Micro Devices datasheet (14 pp, sha256
659c61256d7d4ee3, retrieved 2026-10-22, tier: lcsc) - 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).