# AP2120N-1.5TRG1

**Diodes Incorporated** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

AP2120N-1.5TRG1 from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground reference pin for the regulator. |
| 2 | VOUT | power_out | Regulated output voltage, which needs more than 1µF of output capacitance with ESR from 0.01Ω to 100Ω for stability, and ceramic capacitors are recommended. |
| 3 | VIN | power_in | Input voltage with a recommended range of 2V to 6V (absolute maximum 6.5V), and a 1µF input filter capacitor is required. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 1.47 | 1.5 | 1.53 | V | VIN = 2.5V, 1mA ≤ IOUT ≤ 30mA | 6 |
| Input Voltage | VIN |  |  | 6 | V |  | 6 |
| Output Current | IOUT | 150 |  |  | mA | VIN-VOUT = 1V | 6 |
| Load Regulation | VRLOAD |  | 12 | 40 | mV | VIN = 2.5V, 1mA ≤ IOUT ≤ 80mA | 6 |
| Line Regulation | VRLINE |  | 4 | 16 | mV | 2.3V ≤ VIN ≤ 6V, IOUT = 30mA | 6 |
| Dropout Voltage | VDROP |  | 400 | 600 | mV | IOUT = 10mA | 6 |
| Quiescent Current | IQ |  | 25 | 50 | µA | VIN = 2.5V, IOUT = 0mA | 6 |
| Output Voltage Temperature Coefficient (absolute) | ∆VOUT/∆T | -150 |  | 150 | µV/°C | IOUT = 30mA | 6 |
| Output Voltage Temperature Coefficient (relative) | (∆VOUT/VOUT)/∆T | -100 |  | 100 | ppm/°C |  | 6 |
| Input Voltage | VIN | 2 |  | 6 | V |  | 3 |
| Operating Junction Temperature Range | TJ | -40 |  | 85 | °C |  | 3 |
| Input Voltage | VIN |  |  | 6.5 | V |  | 3 |
| Enable Input Voltage | VCE | -0.3 |  |  | V | Upper limit printed as VIN +0.3 | 3 |
| Output Current | IOUT |  |  | 300 | mA |  | 3 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 3 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 3 |
| Lead Temperature (Soldering) | TLEAD |  |  | 260 | °C | Soldering, 10s | 3 |
| Thermal Resistance (Junction to Ambient) | θJA |  |  | 250 | °C/W | SOT-23, Note 5 | 3 |
| ESD (Human Body Model) | ESD |  |  | 2000 | V | Human Body Model | 3 |
| ESD (Machine Model) | ESD |  |  | 200 | V | Machine Model | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | • Terminals: Finish - Mate Tin Plated Leads, Solderable per MIL￾STD-202, Method 208 • Weight: 0.009 grams (Approximate) | 1 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `AP2120N-1.5TRG1`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23, generated on the KiCad land (body 1.3 x 2.9 mm, terminals on the pads, 1.0 mm tall, datasheet A, midpoint of min and max). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `ap2120n-1-5trg1-etched.step` / `ap2120n-1-5trg1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap2120n-1-5trg1.step` / `ap2120n-1-5trg1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AP2120N-1.5TRG1.pdf) (19 pp, sha256 `66be4c8fbb47afd5`, retrieved 2026-11-13, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/ap2120n-1-5trg1-datasheet.pdf)