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LDK120M30R

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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LDK120M30R

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

LDK120M30R from STMicroelectronics, 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 IN power_in Input voltage of the LDO. Operating range 1.9 V to 5.5 V; absolute max -0.3 V to 7 V. Requires a 1 uF ceramic input capacitor to ground.
2 GND power_in Common ground reference for the device. All voltages are referred to this pin.
3 EN input Enable pin (logic input). Low = shutdown (Iq < 1 uA), High = active. VIL max 0.4 V, VIH min 1.2 V; abs max -0.3 V to VIN+0.3 V; input current up to 100 nA.
4 BYP passive Bypass capacitor pin (fixed-output version) for noise reduction; typical 10 nF ceramic to GND lowers output noise to ~51 uVRMS (10 Hz to 100 kHz). Optional; if unused, leave floating with no routing. Abs max 2 V. On the adjustable version this pin becomes ADJ (feedback input, VADJ = 0.8 V typ.); on the D version it is internally not connected.
5 OUT power_out Regulated output voltage of the LDO. Fixed 3.0 V for LDK120M30R, up to 200 mA output current with typ. 100 mV dropout at 100 mA. Requires a 1 uF (up to 22 uF) ceramic output capacitor to GND.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LDK120M30R
  • LDK120C30R
  • LDK120PU30R

CAD (KiCad official)

  • Symbol: LDK120M30R
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ldk120m30r-etched.step / ldk120m30r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ldk120m30r.step / ldk120m30r.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (24 pp, sha256 67483d91800bf19c, 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