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XC6504A181MR-G

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by Ray

Torex Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-25. Datasheet-verified pinout, 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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XC6504A181MR-G

Torex Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-25

XC6504A181MR-G from Torex Semicon, in a SOT-25. 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 VIN power_in Power supply input. Operating range 1.4V to 6.0V (absolute max -0.3 to +6.5V). Recommended 0.1 µF ceramic input capacitor (CIN) placed close to the pin.
2 VSS power_in Ground reference. All voltages in the datasheet are referenced to VSS.
3 CE input Chip Enable (ON/OFF control), active-high. H (≥0.91V) enables regulator; L (≤0.38V) puts device in standby (ISTB ≈ 0.01 µA) and triggers CL auto-discharge. Must not be left OPEN - operation is unstable; tie to a defined logic level. No internal pull-down (Type A).
4 NC unconnected No internal connection. Leave floating or tie to VSS.
5 VOUT power_out Regulated output, laser-trimmed to 1.8V (±0.02V accuracy for VOUT<2.0V). Delivers up to 150 mA (typ current limit 270 mA). Capacitor-less compatible; if a CL is used, place low-ESR ceramic close to the pin. In standby, VOUT is actively discharged to VSS via RDCHG (≈450 Ω).

Key specifications

Parameter Value
Manufacturer Torex Semicon
Package SOT-25
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • XC6504A181MR-G
  • XC6504A181MR-GNR-G
  • XC6504A181MR-G7R-G
  • XC6504A181MR-G9R-G

CAD (KiCad official)

  • Symbol: XC6504A181MR-G
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
xc6504a181mr-g.step 85 KB You want the bare part, or you mark your own boards.
xc6504a181mr-g-etched.step 2.5 MB You want the part with XC6504A181MR-G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 607 faces against 102 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: Torex Semicon datasheet (33 pp, sha256 2ff9d39d02bb5bed, retrieved 2026-08-17, tier: lcsc)
  • 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