# TPS2540ARTER

**Texas Instruments** · Power Distribution Switches · WQFN-16-EP(3x3)

TPS2540ARTER from Texas Instruments, in a WQFN-16-EP(3x3). 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 | IN | power_in | Power-switch input voltage (4.5 V to 5.5 V recommended); connect a 0.1-µF or greater ceramic capacitor from IN to GND as close to the device as possible. |
| 2 | DM_OUT | bidirectional | D- data line to the USB host controller. |
| 3 | DP_OUT | bidirectional | D+ data line to the USB host controller. |
| 4 | ILIM_SEL | input | Logic-level input that dynamically changes the power-switch current-limit threshold; logic LO selects ILIM0, logic HI selects ILIM1. |
| 5 | EN | input | Logic-level control input for turning the power switch and signal switches on/off; when EN is low the device is disabled and the signal and power switches are OFF. |
| 6 | CTL1 | input | Logic-level control input for controlling the charging mode and the signal switches. |
| 7 | CTL2 | input | Logic-level control input for controlling the charging mode and the signal switches. |
| 8 | CTL3 | input | Logic-level control input for controlling the charging mode and the signal switches; on the TPS2540/40A the CTL1-3 '000' configuration forces a discharge of the OUT capacitor. |
| 9 | N/C | unconnected | No connect pin; can be grounded or left floating. |
| 10 | DP_IN | bidirectional | D+ data line to the connector, input/output used for handshaking with portable equipment. |
| 11 | DM_IN | bidirectional | D- data line to the connector, input/output used for handshaking with portable equipment. |
| 12 | OUT | power_out | Power-switch output. |
| 13 | FAULT | output | Active-low open-drain output, asserted during over-temperature or current-limit conditions. |
| 14 | GND | power_in | Ground connection; should be connected externally to the PowerPAD. |
| 15 | ILIM1 | passive | External resistor to GND sets the current-limit threshold when ILIM_SEL is HI; recommended 16.9 kΩ ≤ RILIM ≤ 750 kΩ. |
| 16 | ILIM0 | passive | External resistor to GND sets the current-limit threshold when ILIM_SEL is LO; recommended 16.9 kΩ ≤ RILIM ≤ 750 kΩ. |
| 17 | PowerPAD | power_in | Exposed thermal pad internally connected to GND, used to heat-sink the part to the circuit board traces; connect to the GND plane. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-16-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 17 |

## CAD (KiCad official)

- Symbol: `TPS2540ARTER`
- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`
- 3D model: WQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `tps2540arter-etched.step` / `tps2540arter-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps2540arter.step` / `tps2540arter.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/tps2540) (39 pp, sha256 `e80f912e05c4a2de`, 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/tps2540arter-datasheet.pdf)