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LDK220U33R

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by Ray

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. 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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LDK220U33R

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

LDK220U33R from STMicroelectronics, in a SOT-89-3. 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 OUT power_out Regulated LDO output, fixed 3.3 V, up to 200 mA. Requires a >=1 uF ceramic output capacitor for stability. Absolute maximum VOUT is -0.3 V to VIN+0.3 V.
2 GND power_in Common ground reference for the regulator. All voltages in the datasheet are referred to this pin.
3 IN power_in Unregulated LDO input, 2.5 V to 13.2 V operating (absolute max -0.3 V to 14 V). Requires a ~1 uF ceramic input capacitor. Enable and adjust are not available on the SOT-89 package (regulator is always on).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SOT-89-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LDK220U33RU30R
  • LDK220U33R
  • LDK220U33RU36R
  • LDK220U33RU50R
  • LDK220U33RM25R
  • LDK220U33RM27R
  • LDK220U33RM30R
  • LDK220U33RM32R
  • LDK220U33RM33R
  • LDK220U33RM35R
  • LDK220U33RM36R
  • LDK220U33RM40R
  • LDK220U33RM50R
  • LDK220U33RM-R
  • LDK220U33RC25R
  • LDK220U33RC27R
  • LDK220U33RC30R
  • LDK220U33RC32R
  • LDK220U33RC33R
  • LDK220U33RC36R
  • LDK220U33RC40R
  • LDK220U33RC50R
  • LDK220U33RC-R
  • LDK220U33RPU25R
  • LDK220U33RPU27R
  • LDK220U33RPU30R
  • LDK220U33RPU32R
  • LDK220U33RPU33R
  • LDK220U33RPU36R
  • LDK220U33RPU40R
  • LDK220U33RPU50R
  • LDK220U33RPU-R

CAD (KiCad official)

  • Symbol: LDK220U33R
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (27 pp, sha256 772dabb216b5c2e7, 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