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qx2303l33t

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QX Micro Devices DC-DC Converters, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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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

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qx2303l33t

QX Micro Devices · DC-DC Converters · SOT-23

qx2303l33t from QX Micro Devices, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Power ground (电源地). Connect to the system ground plane and to the negative terminals of the input and output capacitors.
2 LX output Switching-node output (开关信号输出端) of the internal N-channel power MOSFET. Connect to the junction of the boost inductor and the Schottky diode anode. Absolute-max voltage 7V; internal current-limit ILIMIT typ. 800mA (max 1000mA).
3 VOUT power_in Regulated output-voltage sense / device supply pin (输入电压 per datasheet - feeds the internal reference divider and powers the IC from the boost output). Connect directly to the boost output node (cathode of the Schottky diode) and the output capacitor. Fixed 3.3V option for the L33 suffix; ±2.5% accuracy. Abs-max 7V.

Key specifications

Parameter Value
Manufacturer QX Micro Devices
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • QX2303L33T
  • QX2303L33F
  • QX2303E33F
  • QX2303L33E
  • QX2303L33PO

CAD (KiCad official)

  • Symbol: qx2303l33t
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: qx2303l33t-etched.step / qx2303l33t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); qx2303l33t.step / qx2303l33t.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
qx2303l33t.step 59 KB You want the bare part, or you mark your own boards.
qx2303l33t-etched.step 2.3 MB You want the part with qx2303l33t already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 528 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: QX Micro Devices datasheet (14 pp, sha256 1894fd7d1f75a5e6, retrieved 2026-08-17, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF