component
LDLN025PU28R
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
markdownLDLN025PU28R
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DFN-4(1x1)
LDLN025PU28R 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 | VOUT | power_out | LDO output voltage; the absolute maximum rating is -0.3 V to VIN + 0.3 V. |
| 2 | GND | power_in | Ground pin for the LDO. |
| 3 | EN | input | Enable input: VEN high (VIH min 1.2 V) turns the device on and VEN low (VIL max 0.4 V) turns it off; the pin is internally pulled down via a 1 MΩ resistor and the absolute maximum rating is -0.3 V to VIN + 0.3 V. |
| 4 | VIN | power_in | LDO supply voltage; the operating input range is 1.5 V to 5.5 V and the absolute maximum rating is -0.3 V to 7 V. |
| 5 | Exposed 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:
LDLN025PU28R - Footprint:
Package_DFN_QFN:UDFN-4-1EP_1x1mm_P0.65mm_EP0.48x0.48mm - 3D model: DFN-4(1x1) (KiCad packages3D, STEP)
- 3D model files:
ldln025pu28r-etched.step/ldln025pu28r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ldln025pu28r.step/ldln025pu28r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (27 pp, sha256
b71eeee4c541f04a, retrieved 2026-10-12, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).