# HE2280A50PR

**HEERMICR** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

HE2280A50PR from HEERMICR, in a SOT-89-3. 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 | GND | power_in | Ground pin of the regulator, returned to the input and output capacitor grounds. |
| 2 | VIN | power_in | Supply input, absolute maximum VSS-0.3 to VSS+80 V (recommended max 60 V), decoupled with a 10uF ceramic capacitor placed close to the device. |
| 3 | VOUT | power_out | Fixed 5.0V regulated output (HE2280A50PR) delivering up to 150mA, with a 10uF ceramic output capacitor required for stability. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HEERMICR |
| Package | SOT-89-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Current | IQ |  | 2 | 3 | uA | VIN=12V, ILOAD=0mA | 4 |
| Maximum Output Current | IOUT(Max) |  |  | 200 | mA |  | 4 |
| Input Voltage | VIN |  |  | 80 | V |  | 4 |
| Supply voltage at VIN |  |  |  | 60 | V |  | 3 |
| Operating junction temperature range | Tj | -40 |  | 125 | °C |  | 3 |
| Operating free air temperature range | TA | -40 |  | 85 | °C |  | 3 |
| Input Voltage (absolute maximum) | VIN | -0.3 |  | 80 | V | referenced to VSS (VSS-0.3 to VSS+80.0) | 3 |
| Output Voltage (absolute maximum) | VOUT | -0.3 |  | 6 | V | referenced to VSS (VSS-0.3 to VSS+6.0) | 3 |
| Output Current | IOUT |  |  | 400 | mA |  | 3 |
| Power Dissipation SOT89-3 | Pd |  |  | 500 | mW | SOT89-3 package | 3 |
| Operating Temperature | Topr | -40 |  | 85 | °C |  | 3 |
| Storage Temperature | Tstg | -40 |  | 125 | °C |  | 3 |
| Soldering Temperature | Tsolder |  |  | 260 | ℃ | 10 s | 3 |
| ESD Human Body Model | V(ESD-HBM) | -4000 |  | 4000 | V | HBM, ANSI/ESDA/JEDEC JS-001-2014 Class 2 | 3 |
| ESD Charged Device Model | V(ESD-CDM) | -200 |  | 200 | V | CDM, ANSI/ESDA/JEDEC JS-002-2014 Class C0b | 3 |
| Latch-up | ILATCH-UP | -150 |  | 150 | mA | JEDEC STANDARD NO.78E, Class I | 3 |
| Thermal Resistance SOT89-3 | RθJA |  | 200 |  | ℃/W | SOT89-3 package | 3 |

## CAD (KiCad official)

- Symbol: `HE2280A50PR`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `he2280a50pr-etched.step` / `he2280a50pr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `he2280a50pr.step` / `he2280a50pr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HEERMICR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590236381277548544) (9 pp, sha256 `00ab58f3bb61acb0`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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).

[Datasheet PDF](docs/he2280a50pr-datasheet.pdf)