component

LDK320M-R

Public Unreviewed

by Ray

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

componentpower management (pmic)ldk320m-r
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

PCB Footprint

Open full view ↗
Loads on click. Unloads when scrolled away or the tab is hidden.

Datasheet

Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Download PDF
Contents

README

markdown

LDK320M-R

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

LDK320M-R 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 Unregulated input supply to the LDO. Operating range 2.5 V to 18 V (absolute max -0.3 V to 20 V). Bypass to GND with a 1 uF ceramic capacitor placed close to the pin.
2 GND power_in Common ground reference for the regulator. All input, output, enable and ADJ voltages are referenced to this pin.
3 EN input Enable logic input. Drive high to activate the regulator, low to place it in shutdown (total current < 1 uA typ). Absolute max range -0.3 V to VIN+0.3 V. Must not be left floating.
4 ADJ input Adjust feedback input for the adjustable version (LDK320M-R). Connect to the midpoint of an external resistor divider from VOUT to GND; the regulator forces VADJ ~1.2 V (VADJref), so VOUT = VADJ x (1 + R1/R2). Absolute max -0.3 V to 2 V. On fixed-output variants this pin is NC.
5 OUT power_out Regulated output of the LDO. Delivers up to 200 mA with 100 mV typ dropout at 100 mA. Requires a 1 uF ceramic output capacitor to GND for stability. Absolute max -0.3 V to VIN+0.3 V.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-23-5L
Category Power Management (PMIC)
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • LDK320M-R
  • LDK320M-RU-R
  • LDK320M-RDU-R

CAD (KiCad official)

  • Symbol: LDK320M-R
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5L (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (None pp, sha256 053235d2672f89b8, 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