component
AP2128K-3.3TRG1
Public Made by Adomby adom
Diodes Incorporated Linear Voltage Regulators (LDO), SOT-23-5. 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
markdownAP2128K-3.3TRG1
Diodes Incorporated · Linear Voltage Regulators (LDO) · SOT-23-5
AP2128K-3.3TRG1 from Diodes Incorporated, in a SOT-23-5. 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 | VIN | power_in | Input supply pin, specified for 2.5V to 6V operation with absolute maximum VIN of 6.5V. |
| 2 | GND | power_in | Ground reference pin for the regulator. |
| 3 | SHUTDOWN | input | Shutdown control input with 'High' above 1.5V and 'Low' below 0.4V, and absolute range -0.3V to VIN+0.3V. |
| 4 | ADJ/NC | unconnected | Feedback input for the adjustable version (VOUT=0.8(1+R1/R2), reference 0.8V); on the fixed 3.3V version this pin is not connected. |
| 5 | VOUT | power_out | Regulated output in fixed-voltage mode; the fixed version senses output voltage on this pin, with 3.3V nominal and 50mA short current limit. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23-5 |
| Category | Power Management ICs |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
AP2128K-3.3TRG1 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ap2128k-3-3trg1-etched.step/ap2128k-3-3trg1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap2128k-3-3trg1.step/ap2128k-3-3trg1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (21 pp, sha256
29301d6829bc1577, retrieved 2026-10-27, 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).