# TP8816B

**TPOWER** · LED Drivers · ESOP-8L

TP8816B 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 | S | passive | Source of the internal power MOSFET, which the datasheet rates for a 100 V drain-source breakdown (VBR_DSS) and an on-resistance of 100 mΩ for the TP8816B. |
| 2 | CS | input | Output current sense pin; the LED average-current sense resistor is connected between CS and GND, and the sense threshold is 200 mV at 100% brightness or 100 mV at 50% brightness, with CS and S rated -0.3 V to +6 V to GND. |
| 3 | GND | power_in | Chip ground, rated -0.3 V to +8 V relative to VDD and -0.3 V to +9 V relative to MODE per the absolute maximum ratings. |
| 4 | MODE | input | Brightness mode input: a high level (≥2.5 V) selects 50% output and a low level (≤2 V) selects 100% output, with an internal 80 kΩ pull-down, a clamp of 8.7 V, and an absolute maximum of -0.3 V to +9 V to GND. |
| 5 | NC | unconnected | No internal connection; the datasheet says this pin is left floating. |
| 6 | SW | output | Drain of the internal power MOSFET and the switching node of the buck converter, rated up to 100 V to GND; pin 6 and pin 7 are both SW and should be tied together. |
| 7 | SW | output | Drain of the internal power MOSFET and the switching node of the buck converter, rated up to 100 V to GND; pin 7 and pin 6 are both SW and should be tied together. |
| 8 | VDD | power_in | Supply input with an internal 7.5 V shunt regulator clamp; undervoltage lockout releases at 4.75 V rising with 4.0 V falling, and VDD to GND is rated -0.3 V to +8 V, with a bypass capacitor required close to the VDD and GND pins. |
| 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: `TP8816B`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8L (KiCad packages3D, STEP)
- 3D model files: `tp8816b-etched.step` / `tp8816b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tp8816b.step` / `tp8816b.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/8603384151563657216) (7 pp, sha256 `bcc1609ed15987cb`, 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/tp8816b-datasheet.pdf)