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AP2125N-3.3TRG1

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by Ray

Diodes Incorporated AP2125N 3 3TRG1 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. 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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AP2125N-3.3TRG1

Diodes Incorporated AP2125N 3 3TRG1 · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

AP2125N-3.3TRG1 from Diodes Incorporated AP2125N 3 3TRG1, 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 Device ground reference. Connect to system ground plane; also serves as the return for the internal reference and control circuitry.
2 VOUT power_out Regulated 3.3V output (fixed, ±2% accuracy). Sources up to 300mA (min). Requires a 1µF ceramic output capacitor for stability; compatible with low-ESR ceramic capacitors.
3 VIN power_in Unregulated input supply. Recommended VIN = VOUT+0.5V to 6V (absolute max 6.5V). Bypass with a 1µF ceramic capacitor close to the pin.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated AP2125N 3 3TRG1
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • AP2125N-3.3TRG1
  • AP2125K-3.3TRG1
  • AP2125KS-3.3TRG1

CAD (KiCad official)

  • Symbol: AP2125N-3.3TRG1
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Diodes Incorporated AP2125N 3 3TRG1 datasheet (25 pp, sha256 73dd4f47f543db12, retrieved 2026-08-17, tier: manufacturer)
  • 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