# TPS75105DSKR

**Texas Instruments** · LED Drivers · DFN-10-EP(2.5x2.5)

TPS75105DSKR from Texas Instruments, in a DFN-10-EP(2.5x2.5). 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 | ENB | input | Enable pin for Bank B; accepts PWM signal to modulate LED current from 0 mA to ISET maximum. |
| 2 | ENA | input | Enable pin for Bank A; accepts PWM signal to modulate LED current from 0 mA to ISET maximum. |
| 3 | D1A | output | Diode current source output for Bank A; supplies constant current 3-25 mA to LED anode. |
| 4 | D2A | output | Diode current source output for Bank A; supplies constant current 3-25 mA to LED anode. |
| 5 | GND | power_in | Ground reference; includes pin 5 and exposed thermal pad. |
| 6 | NC | unconnected | Not internally connected. |
| 7 | D2B | output | Diode current source output for Bank B; supplies constant current 3-25 mA to LED anode. |
| 8 | D1B | output | Diode current source output for Bank B; supplies constant current 3-25 mA to LED anode. |
| 9 | VIN | power_in | Supply input voltage; accepts 2.7-5.5 V per recommended operating conditions. |
| 10 | ISET | input | Resistor connection for LED current setting; defaults to factory-programmed value (5 mA for TPS75105) if not connected. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | DFN-10-EP(2.5x2.5) |
| Category | LED Drivers |
| Pins | 11 |

## CAD (KiCad official)

- Symbol: `TPS75105DSKR`
- Footprint: `Package_DFN_QFN:DFN-10-1EP_2.6x2.6mm_P0.5mm_EP1.3x2.2mm`
- 3D model: DFN-10-EP(2.5x2.5), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tps75105dskr-etched.step` / `tps75105dskr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps75105dskr.step` / `tps75105dskr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tps75100) (28 pp, sha256 `13a2ff9b7702b469`, retrieved 2026-10-01, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/tps75105dskr-datasheet.pdf)