# RT9013-18GB

**Richtek Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

RT9013-18GB from Richtek Tech, 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 | Supply input. Operating range 2.2 V to 5.5 V (6 V absolute max). Bypass with a 1 uF ceramic (X7R) capacitor to GND close to the pin for stability. |
| 2 | GND | power_in | Common ground return for the regulator. Serves as the reference for VOUT and EN thresholds. |
| 3 | EN | input | Enable input, active high. VIH >= 1.6 V turns the regulator on; VIL <= 0.6 V (or EN = 0 V) puts the device in shutdown (typ 0.7 uA). Do not leave floating; tie high or drive with a logic signal. Absolute max 6 V. |
| 4 | NC | unconnected | No internal connection. May be left floating or tied to GND. |
| 5 | VOUT | power_out | Regulated output. Fixed 1.8 V for RT9013-18 option, +/-2% accuracy at 10 mA load, 500 mA maximum. Requires only a 1 uF ceramic (X7R) output capacitor for stability. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |

## Ordering variants

Same part, different packaging or reel option.

- `RT9013-18GBB`
- `RT9013-18GBU5`
- `RT9013-18GBY`
- `RT9013-18GBQW`

## CAD (KiCad official)

- Symbol: `RT9013-18GB`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `rt9013-18gb-etched.step` / `rt9013-18gb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rt9013-18gb.step` / `rt9013-18gb.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`rt9013-18gb.step`](rt9013-18gb.step) | 85 KB | You want the bare part, or you mark your own boards. |
| [`rt9013-18gb-etched.step`](rt9013-18gb-etched.step) | 2.2 MB | You want the part with `RT9013-18GB` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 539 faces against 102 in the bare model. It
survives export, section views, and rendering in any CAD tool, and it drops straight
into KiCad or Fusion with no extra setup.

## Provenance

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

- **Datasheet:** [Richtek Tech datasheet](docs/rt9013-18gb-datasheet.pdf) (13 pp, sha256 `15023cfb98e4146e`, 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/rt9013-18gb-datasheet.pdf)