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LDK120DM33R

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5L. 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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LDK120DM33R

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5L

LDK120DM33R from STMicroelectronics, in a SOT-23-5L. 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 IN power_in Input voltage of the LDO. Operating range 1.9 V to 5.5 V. Requires a 1 µF ceramic input decoupling capacitor (C_I) to GND.
2 GND power_in Common ground reference for the regulator.
3 EN input Enable pin, logic input. Low = shutdown (I_Q < 1 µA), High = active. Must not be left floating.
4 NC unconnected Internally not connected on the 'D' version of the LDK120 (this LDK120DM33R). May be left open or tied to any potential without affecting operation.
5 OUT power_out Regulated output voltage, fixed 3.3 V ±2% (M33 option), guaranteed 200 mA. Stable with a 1 µF ceramic output capacitor (C_O).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23-5L
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LDK120DM33RM
  • LDK120DM33RY
  • LDK120DM33RC

CAD (KiCad official)

  • Symbol: LDK120DM33R
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)
  • 3D model files: ldk120dm33r-etched.step / ldk120dm33r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ldk120dm33r.step / ldk120dm33r.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (24 pp, sha256 1684d802fa69801e, 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