# TPS259520DSGR

**Texas Instruments** · Surge Protection Devices (SPDs) · WSON-8-EP(2x2)

TPS259520DSGR from Texas Instruments, in a WSON-8-EP(2x2). 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 | dVdt | bidirectional | A capacitor from this pin to GND sets the output turn-on slew rate, and leaving the pin floating gives the fastest turn-on slew rate; the dVdt pin voltage is limited to 2.5 V maximum. |
| 2 | EN/UVLO | input | Active-high enable for the TPS259520 (x0 variant), where a resistor divider can set the undervoltage lockout threshold, the pin must not be left floating, and the enable pin voltage is specified 0 V to 6 V (7 V absolute maximum). |
| 3 | IN | power_in | Power input with a recommended input voltage range of 2.7 V to 18 V and an absolute maximum of 20 V. |
| 4 | IN | power_in | Power input with a recommended input voltage range of 2.7 V to 18 V and an absolute maximum of 20 V. |
| 5 | OUT | power_out | Power output of the internal eFuse FET, rated for 4 A continuous output current over a junction temperature of −40 °C to 125 °C. |
| 6 | FLT | output | Open-drain fault indicator that is pulled low when a fault is detected, requires an external pull-up resistor, and is limited to 6 V recommended with 10 mA maximum sink current. |
| 7 | ILM | bidirectional | Dual-function pin where an external resistor from this pin to GND (487 Ω to 5000 Ω) sets the output current limit, the pin voltage can monitor load current, and it must not be left floating. |
| 8 | GND | power_in | Ground reference for the device. |
| 9 | GND | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-8-EP(2x2) |
| Category | Circuit Protection |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `TPS259520DSGR`
- Footprint: `Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm`
- 3D model: WSON-8-EP(2x2) (KiCad packages3D, STEP)
- 3D model files: `tps259520dsgr-etched.step` / `tps259520dsgr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps259520dsgr.step` / `tps259520dsgr.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/tps2595) (49 pp, sha256 `c6982dad9247501e`, retrieved 2026-10-11, 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/tps259520dsgr-datasheet.pdf)