# TP8025AF

**TPOWER** · LED Drivers · ESOP-8L

TP8025AF from TPOWER, in a ESOP-8L. 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 | Chip ground (chip ground reference for the device). |
| 2 | VDD | power_in | Supply input with an internal 5.6 V zener clamp; the datasheet states that an external supply resistor is needed when the input voltage is above 5.6 V, and VDD undervoltage lockout is 3.1 V rising and 2.7 V falling. |
| 3 | NC | unconnected | No connection. |
| 4 | SW | output | Drain of the internal power transistor; the SW to GND voltage rating is -0.3 V to +100 V and the power switch output current is 3 A maximum. |
| 5 | CS | input | Output current sampling pin; the sense resistor is connected between CS and GND, and the average current sampling voltage threshold VREF is 200 mV. |
| 6 | NC | unconnected | No connection. |
| 7 | NC | unconnected | No connection. |
| 8 | NC | unconnected | No connection. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TPOWER |
| Package | ESOP-8L |
| Category | LED Drivers |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `TP8025AF`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8L (KiCad packages3D, STEP)
- 3D model files: `tp8025af-etched.step` / `tp8025af-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tp8025af.step` / `tp8025af.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TPOWER datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603384148304277504) (6 pp, sha256 `fe4f5db7bd4408b9`, retrieved 2026-10-09, 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/tp8025af-datasheet.pdf)