# PL8310

**POWLICON** · DC-DC Converters · SOP-8

PL8310 from POWLICON, in a SOP-8. 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 | BST | power_out | Boot-strap pin; connect a 0.1µF or greater capacitor between SW and BST to power the high-side gate driver. |
| 2 | SW | output | Power switching pin; connect this pin to the switching node of the inductor. |
| 3 | GND | power_in | Ground reference pin for the device; the input and output capacitor grounds and the R2 ground should connect directly to this pin. |
| 4 | VIN | power_in | Power input supplying the IC; supply with a 4.5V to 36V source and bypass to GND with a large capacitor plus at least 0.1µF ceramic placed close to VIN and GND. |
| 5 | FB | input | Feedback input sensing the output voltage through a resistor divider to ground; it is a sensitive node to keep away from SW and BST, and connect it directly to output when CS is floating or tied to output. |
| 6 | EN | input | Digital enable input that turns the regulator on when driven high and off when low, with an internal pull-up to VIN and a threshold of 1.1V without hysteresis. |
| 7 | LED | input | LED input connected to the negative terminal of an LED to indicate output status. |
| 8 | CS | input | Current sense input; connect a 10mΩ to 100mΩ resistor between this pin and GND to program the current limit, and its connection also sets the work mode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | POWLICON |
| Package | SOP-8 |
| Category | Power Supply Chip |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `PL8310`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `pl8310-etched.step` / `pl8310-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pl8310.step` / `pl8310.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [POWLICON datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917202778644480) (12 pp, sha256 `ea1920ea5718d2a4`, retrieved 2026-10-09, 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/pl8310-datasheet.pdf)