# ME2188A28TG

**MICRONE** · DC-DC Converters · TO-92-3

ME2188A28TG from MICRONE, in a TO-92-3. 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 that must be well grounded, because otherwise the internal zero potential varies with switching current and makes operation unstable. |
| 2 | VOUT | power_out | Output voltage pin; the datasheet gives output accuracy of ±2%, a recommended 0.1µF ceramic capacitor between VOUT and GND, and an output capacitor of at least 40µF (47µF recommended). |
| 3 | LX | output | Energy-conversion switch pin with absolute maximum LX pin voltage of -0.3 to 6 V and LX pin current of 1000 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MICRONE |
| Package | TO-92-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Startup voltage | Vstart | 0.7 | 0.9 | 1.1 | V | ILOAD=1mA, VIN:0→2V | 4 |
| Output voltage accuracy | Vout | -2 |  | 2 | % |  | 4 |
| Current limit | Ilimit | 800 | 1000 | 1200 | mA |  | 4 |
| LX pin voltage | LX | -0.3 |  | 6 | V |  | 4 |
| VOUT pin voltage | VOUT | -0.3 |  | 6 | V |  | 4 |
| LX pin current | ILXmax |  |  | 1000 | mA |  | 4 |
| Operating temperature range | TOPR | -40 |  | 125 | ºC |  | 4 |
| Storage temperature range | TSTG | -50 |  | 150 | ºC |  | 4 |
| Soldering temperature | TL |  |  | 260 | ºC |  | 4 |
| Package power dissipation | PD |  |  | 750 | mW | TO92 package | 4 |
| Power regulation (line) | ΔVout1 |  | 5 | 20 | mV | VIN=Vout×0.4~×0.6, IOUT=10mA | 4 |
| Load regulation | ΔVout2 |  | 20 | 30 | mV | IOUT=0-100mA,VIN=2V | 4 |
| Quiescent current | ISS |  | 7.5 | 15 | uA | VOUT=VOUT+0.5 | 4 |
| No-load input current | Iin0 |  | 10 | 15 | uA | VIN=1.5V ,VOUT=2.2V | 4 |
| Efficiency |  |  | 93 | 96 | % |  | 4 |
| Maximum input voltage | Vinmax |  | 0.9 | 5 | V |  | 4 |
| Hold voltage | Vhold |  | 0.5 |  | V | ILOAD=1mA, VIN:2→0V | 4 |
| Oscillation frequency |  |  | 320 |  | KHz |  | 4 |
| Oscillation signal duty cycle | DCosc |  | 74 |  | % |  | 4 |

## CAD (KiCad official)

- Symbol: `ME2188A28TG`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files: `me2188a28tg-etched.step` / `me2188a28tg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `me2188a28tg.step` / `me2188a28tg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MICRONE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588891543566893056) (12 pp, sha256 `8fd7526a1944d23d`, retrieved 2026-10-21, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/me2188a28tg-datasheet.pdf)