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LD39020ADTPU18R

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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DFN-4(1x1). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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LD39020ADTPU18R

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4(1x1)

LD39020ADTPU18R from STMicroelectronics, in a DFN-4(1x1). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 OUT power_out Regulated output voltage pin capable of delivering up to 200 mA output current with 200 mV typical dropout voltage at maximum load.
2 GND power_in Common ground reference.
3 EN input Enable pin logic input; Low level (≤0.4 V) activates shutdown mode with quiescent current <0.1 µA, High level (≥1 V) enables normal operation.
4 IN power_in Input voltage supply pin accepting 1.5 V to 5.5 V with recommended 1 µF minimum input capacitor.
5 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package DFN-4(1x1)
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: LD39020ADTPU18R
  • Footprint: Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm
  • 3D model: DFN-4(1x1) (KiCad packages3D, STEP)
  • 3D model files: ld39020adtpu18r-etched.step / ld39020adtpu18r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ld39020adtpu18r.step / ld39020adtpu18r.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (30 pp, sha256 e4097fa7d6a209f5, retrieved 2026-10-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF