# RT9013-33GB

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

RT9013-33GB 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 | EN | input | Enable input, active high (TTL-logic controlled). V_IH ≥ 1.6V enables the regulator; V_IL ≤ 0.6V places the device in shutdown mode (I_SHDN typ 0.7µA). Absolute-max 6V; do not float - tie through a 100k pull-down if unused. |
| 2 | GND | power_in | Common ground reference for the regulator. Provides the return path for input, output, and internal reference currents. |
| 3 | VIN | power_in | Supply input. Operating range 2.2V to 5.5V, absolute-max 6V. Bypass with a 1µF ceramic (X7R) capacitor close to the pin for stability and transient response. |
| 4 | NC | unconnected | No internal connection. May be left floating or tied to GND for best PCB layout practice. |
| 5 | VOUT | power_out | Regulated output, fixed 3.3V (±2% accuracy at 10mA). Sources up to 500mA with 250mV typical dropout at full load. Requires only a 1µF ceramic (X7R) output capacitor for stability; current limit typ 0.5-0.6A. |

## Key specifications

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

## Ordering variants

Same part, different packaging or reel option.

- `RT9013-33GB`
- `RT9013-33GBPB`
- `RT9013-33GBGU5`
- `RT9013-33GBPU5`
- `RT9013-33GBGY`
- `RT9013-33GBPY`
- `RT9013-33GBGQW`
- `RT9013-33GBPQW`

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Voltage Range | VIN | 2.2 |  | 5.5 | V |  | 3 |
| Output Voltage Accuracy (Fixed Output Voltage) | ΔVOUT | -2 | 0 | 2 | % | IOUT = 10mA | 3 |
| Quiescent Current | IQ |  | 25 | 50 | μA | VEN = 5V, IOUT = 0mA | 3 |
| Shutdown Current | ISHDN |  | 0.7 | 1.5 | μA | VEN = 0V | 3 |
| Current Limit | ILIM | 0.4 | 0.5 | 0.85 | A | RLOAD = 0Ω, 2.2V ≤ VIN < 2.6V | 3 |
| Current Limit | ILIM | 0.5 | 0.6 | 0.85 | A | RLOAD = 0Ω, 2.7V ≤ VIN ≤ 5.5V | 3 |
| Dropout Voltage | VDROP |  | 160 | 320 | mV | IOUT = 400mA, 2.2V ≤ VIN < 2.7V | 3 |
| Dropout Voltage | VDROP |  | 250 | 400 | mV | IOUT = 500mA, 2.7V ≤ VIN ≤ 5.5V | 3 |
| Load Regulation (Fixed Output Voltage) | ΔVLOAD |  |  | 0.6 | % | 1mA < IOUT < 400mA, 2.2V ≤ VIN < 2.7V | 3 |
| Load Regulation (Fixed Output Voltage) | ΔVLOAD |  |  | 1 | % | 1mA < IOUT < 500mA, 2.7V ≤ VIN ≤ 5.5V | 3 |
| EN Threshold Voltage Logic-Low | VIL | 0 |  | 0.6 | V |  | 4 |
| EN Threshold Voltage Logic-High | VIH | 1.6 |  | 5.5 | V |  | 4 |
| Enable Pin Current | IEN |  | 0.1 | 1 | μA |  | 4 |
| Line Regulation | ΔVLINE |  | 0.01 | 0.2 | %/V | VIN = (VOUT+0.5) to 5.5V, IOUT = 1mA | 4 |
| Supply Input Voltage |  | 2.2 |  | 5.5 | V |  | 3 |
| Junction Temperature Range |  | -40 |  | 125 | °C |  | 3 |
| Ambient Temperature Range |  | -40 |  | 85 | °C |  | 3 |
| Supply Input Voltage |  |  |  | 6 | V |  | 3 |
| EN Input Voltage |  |  |  | 6 | V |  | 3 |
| Power Dissipation SOT-23-5 | PD |  |  | 0.4 | W | TA = 25°C | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Junction Temperature |  |  |  | 150 | °C |  | 3 |
| Lead Temperature (Soldering, 10 sec.) |  |  |  | 260 | °C | 10 sec soldering | 3 |
| ESD Susceptibility HBM |  |  |  | 2 | kV |  | 3 |
| ESD Susceptibility MM |  |  |  | 200 | V |  | 3 |
| Package Thermal Resistance SOT-23-5 junction-to-ambient | θJA |  |  | 250 | °C/W |  | 3 |
| Package Thermal Resistance SOT-23-5 junction-to-case | θJC |  |  | 25 | °C/W |  | 3 |

## CAD (KiCad official)

- Symbol: `RT9013-33GB`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `rt9013-33gb-etched.step` / `rt9013-33gb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rt9013-33gb.step` / `rt9013-33gb.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`rt9013-33gb.step`](rt9013-33gb.step) | 85 KB | You want the bare part, or you mark your own boards. |
| [`rt9013-33gb-etched.step`](rt9013-33gb-etched.step) | 2.4 MB | You want the part with `RT9013-33GB` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 567 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/rt9013-33gb-datasheet.pdf) (13 pp, sha256 `779688f55e44aca5`, 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/rt9013-33gb-datasheet.pdf)