TPAP2125K-3.3TRE1
Public Unreviewedby Ray
TECH PUBLIC TPAP2125K 3 3TRE1 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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README
markdownTPAP2125K-3.3TRE1
TECH PUBLIC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
TPAP2125K-3.3TRE1 from TECH PUBLIC, in a SOT-23-5. 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 | VIN | power_in | Regulator input supply. Operating range 1.2 V to 5.5 V (absolute max 6.5 V referenced to GND). Bypass locally with a 1 µF to 10 µF ceramic capacitor to GND. |
| 2 | GND | power_in | Device ground and return for the reference/error amplifier. Typical ground current is 2 µA at no load; shutdown ground current is 10 nA when EN is low. |
| 3 | EN | input | Active-high enable. VIH ≥ 2 V turns the regulator on; VIL ≤ 0.6 V forces shutdown (10 nA typical). Input current ~10 nA at VEN = 5 V. Absolute max EN voltage -0.3 V to 6 V; do not leave floating. |
| 4 | NC | unconnected | No internal connection on this SOT-23-5 variant. Leave floating or tie to GND for mechanical stability. |
| 5 | VOUT | power_out | Regulated 3.3 V output, ±2% accuracy, up to 600 mA. Stable with a 1 µF to 10 µF ceramic or tantalum output capacitor. Dropout ~0.32 V at 600 mA; internal discharge resistance ~100 Ω when disabled. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
TPAP2125K-3.3TRE1
CAD (KiCad official)
- Symbol:
TPAP2125K-3.3TRE1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
tpap2125k-3-3tre1.step |
85 KB | You want the bare part, or you mark your own boards. |
tpap2125k-3-3tre1-etched.step |
2.6 MB | You want the part with TPAP2125K-3.3TRE1 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 646 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (9 pp, sha256
7c572004a9026b99, 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).