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QX2303L33F

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QX Micro Devices DC-DC Converters, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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QX2303L33F

QX Micro Devices · DC-DC Converters · SOT-23-5

QX2303L33F from QX Micro Devices, in a SOT-23-5. 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 EN input Chip enable input, active high. Drive above 0.4*VOUT to enable the converter; drive below 0.2V to place the chip into standby (typical IINQ = 1uA, max). Absolute voltage range: -0.3V to VOUT+0.3V.
2 VOUT power_in Regulated output voltage sense / chip supply. Connect to the boosted output rail (3.3V for the -33 option) through COUT (typ. 100uF). Also serves as internal supply for the feedback and bandgap network; absolute max 7V.
3 NC unconnected No connect. Leave floating.
4 GND power_in Power/signal ground return for the internal MOS switch and control circuitry.
5 LX output Switch node - drain of the internal N-channel power MOSFET. Connect to the inductor / Schottky diode anode. Max switch current ILX_MAX = 1000mA (typical current limit 800mA, min 600mA); absolute max voltage 7V.

Key specifications

Parameter Value
Manufacturer QX Micro Devices
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • QX2303L33FLXXF
  • QX2303L33FEXXF
  • QX2303L33FLXXT
  • QX2303L33FLXXE
  • QX2303L33FLXXPO

CAD (KiCad official)

  • Symbol: QX2303L33F
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: qx2303l33f-etched.step / qx2303l33f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); qx2303l33f.step / qx2303l33f.glb are the bare package body.

Provenance

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

  • Datasheet: QX Micro Devices datasheet (14 pp, sha256 7ed1fa24da64cb11, 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