AP2127K-2.8TRG1

@@ -0,0 +1,55 @@+# AP2127K-2.8TRG1++**Diodes Incorporated AP2127K 2 8TRG1** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5++AP2127K-2.8TRG1 from Diodes Incorporated AP2127K 2 8TRG1, 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 power input. Operating range 2.5V to 6V (abs max 6.5V). Bypass to GND with a 1µF ceramic capacitor placed close to the pin to ensure input stability and low noise. |+| 2 | GND | power_in | Device ground reference and return for input/output currents. Tie directly to the system ground plane; use a wide copper trace to minimise noise. |+| 3 | Shutdown | input | Active-low enable/shutdown control. Drive high (≥1.5V) to enable the regulator; drive low (≤0.5V) to disable the LDO. When shutdown is asserted, an internal ~60Ω MOSFET auto-discharges VOUT to GND. An internal 3MΩ pull-down keeps the part off if left floating. Abs max input range -0.3V to VIN+0.3V. |+| 4 | NC | unconnected | No Connection on fixed-output (2.8V) version. On the adjustable AP2127K-ADJ variant this same pin becomes the ADJ feedback input; on the fixed 2.8V part it should be left floating (or optionally tied to GND). |+| 5 | VOUT | power_out | Regulated 2.8V output, 300mA continuous (400mA typical current limit, 50mA short-circuit clamp). Requires a 1µF or larger low-ESR ceramic capacitor (X5R/X7R) to GND placed close to the pin for stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated AP2127K 2 8TRG1 |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## Ordering variants++- `AP2127K-2.8TRG1`+- `AP2127K-2.8TRG1N-1.0TRG1`+- `AP2127K-2.8TRG1N-1.2TRG1`+- `AP2127K-2.8TRG1N-1.5TRG1`+- `AP2127K-2.8TRG1N-1.8TRG1`+- `AP2127K-2.8TRG1N-2.5TRG1`+- `AP2127K-2.8TRG1N-2.8TRG1`+- `AP2127K-2.8TRG1N-3.0TRG1`+- `AP2127K-2.8TRG1N-3.3TRG1`+- `AP2127K-2.8TRG1N3-1.2TRG1`+- `AP2127K-2.8TRG1N3-1.5TRG1`+- `AP2127K-2.8TRG1R-3.3TRG1`++## CAD (KiCad official)++- Symbol: `AP2127K-2.8TRG1`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated AP2127K 2 8TRG1 datasheet](https://www.diodes.com/assets/Datasheets/AP2127K-2.8TRG1.pdf) (24 pp, sha256 `d48c96ac985d348a`, retrieved 2026-08-17, tier: manufacturer)+- **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).++[Datasheet PDF](docs/ap2127k-2-8trg1-datasheet.pdf)

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