# RT8058GQW

**Richtek Tech** · DC-DC Converters · WQFN-16-EP(3x3)

RT8058GQW from Richtek Tech, in a WQFN-16-EP(3x3). 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 | PGND | power_in | Power ground; connect this pin close to the (-) terminal of CIN and COUT. |
| 2 | PGND | power_in | Power ground; connect this pin close to the (-) terminal of CIN and COUT. |
| 3 | PGND | power_in | Power ground; connect this pin close to the (-) terminal of CIN and COUT. |
| 4 | FB | input | Feedback input that receives the feedback voltage from a resistive divider connected across the output, referenced to the internal 0.6V reference. |
| 5 | GND | power_in | Signal ground; return the feedback resistive dividers to this pin, which connects to PGND at one point. |
| 6 | NC | unconnected | No internal connection. |
| 7 | EN | input | Enable pin; a logic high enables the converter and a logic low shuts it down (VEN_H min 1.4V, VEN_L max 0.4V). |
| 8 | NC | unconnected | No internal connection. |
| 9 | VDD | power_in | Signal input supply, decoupled to GND with a capacitor; normally equal to PVDD, and the VDD-to-PVDD difference must be kept below 0.5V. |
| 10 | PVDD | power_in | Power input supply of the converter power stage, decoupled to PGND with a capacitor; input range 2.6V to 5.5V. |
| 11 | PVDD | power_in | Power input supply of the converter power stage, decoupled to PGND with a capacitor; input range 2.6V to 5.5V. |
| 12 | PVDD | power_in | Power input supply of the converter power stage, decoupled to PGND with a capacitor; input range 2.6V to 5.5V. |
| 13 | LX | output | Output of the converter from the internal power MOSFET switches; connect to the inductor. |
| 14 | LX | output | Output of the converter from the internal power MOSFET switches; connect to the inductor. |
| 15 | LX | output | Output of the converter from the internal power MOSFET switches; connect to the inductor. |
| 16 | NC | unconnected | No internal connection. |
| 17 | PGND | power_in | Exposed pad; must be soldered to a large PCB and connected to PGND for maximum power dissipation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Richtek Tech |
| Package | WQFN-16-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 17 |

## 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 | 2.6 |  | 5.5 | V |  | 3 |
| Feedback Voltage | VFB | 0.582 | 0.6 | 0.618 | V |  | 3 |
| Shutdown DC Bias Current (PVDD, VDD total) |  |  |  | 2 | μA | EN = 0 | 3 |
| Under Voltage Lockout Threshold, VDD Rising | UVLO | 2.3 | 2.43 | 2.55 | V | VDD Rising | 3 |
| Oscillator Frequency | fOSC | 0.75 | 1 | 1.25 | MHz | Switching Frequency | 3 |
| EN High-Level Input Voltage | VEN_H | 1.4 |  |  | V |  | 3 |
| EN Low-Level Input Voltage | VEN_L |  |  | 0.4 | V |  | 3 |
| Switch On Resistance, High | RDS(ON)_P |  | 142 | 210 | mΩ | IOUT = 200mA | 3 |
| Switch On Resistance, Low | RDS(ON)_N |  | 96 | 160 | mΩ | IOUT = 200mA | 3 |
| Peak Current Limit | ILIM | 2.2 | 3 |  | A |  | 3 |
| Supply Input Voltage |  | 2.6 |  | 5.5 | V |  | 3 |
| Junction Temperature Range |  | -40 |  | 125 | °C |  | 3 |
| Ambient Temperature Range |  | -40 |  | 85 | °C |  | 3 |
| Supply Input Voltage VDD, PVDD |  | -0.3 |  | 6 | V |  | 3 |
| LX Pin Switch Voltage |  | -0.3 |  | 6 | V |  | 3 |
| Other I/O Pin Voltage |  | -0.3 |  | 6 | V |  | 3 |
| Power Dissipation PD | PD |  |  | 1.471 | W | TA = 25°C, package as printed 'WQFN-6L 3x3' | 3 |
| Lead Temperature (Soldering, 10 sec.) |  |  |  | 260 | °C | Soldering, 10 sec. | 3 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 3 |
| Junction Temperature |  |  |  | 150 | °C |  | 3 |
| ESD Susceptibility HBM |  |  |  | 2 | kV | Human Body Model | 3 |
| ESD Susceptibility MM |  |  |  | 200 | V | Machine Model | 3 |
| Package Thermal Resistance junction-to-ambient | θJA |  | 68 |  | °C/W | WQFN-16L 3x3, JEDEC 51-7 four-layer board, natural convection, TA = 25°C | 3 |
| Package Thermal Resistance junction-to-case | θJC |  | 7 |  | °C/W | WQFN-16L 3x3, case at exposed pad | 3 |

## CAD (KiCad official)

- Symbol: `RT8058GQW`
- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`
- 3D model: WQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `rt8058gqw-etched.step` / `rt8058gqw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rt8058gqw.step` / `rt8058gqw.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Richtek Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588881917915631616) (15 pp, sha256 `540fd179e6777a52`, retrieved 2026-10-17, tier: lcsc)
- **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/rt8058gqw-datasheet.pdf)