component
LD39020DTPU18R
Public Made by Adomby adom
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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLD39020DTPU18R
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4(1x1)
LD39020DTPU18R 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 | output | Output voltage of 1.8 V (±2% tolerance at 25°C) supplies up to 200 mA load current; requires minimum 0.47 µF ceramic output capacitor for stability. |
| 2 | GND | power_in | Common ground and thermal pad connection; connect to PCB ground plane for heat dissipation. |
| 3 | EN | input | Enable pin logic input; Low level (≤0.4 V) enters shutdown with <1 µA leakage, High level (≥1 V) enables active regulation with soft-start. |
| 4 | IN | power_in | Input voltage supply from 1.5 to 5.5 V with 200 mV typical dropout voltage at 200 mA load; requires minimum 1 µF ceramic input capacitor for stability. |
| 5 | Thermal pad | 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:
LD39020DTPU18R - Footprint:
Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm - 3D model: DFN-4(1x1) (KiCad packages3D, STEP)
- 3D model files:
ld39020dtpu18r-etched.step/ld39020dtpu18r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ld39020dtpu18r.step/ld39020dtpu18r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (30 pp, sha256
e4097fa7d6a209f5, retrieved 2026-10-03, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).