# TPS62140ARGTT

**Texas Instruments** · DC-DC Converters · TQFN-16-EP(3x3)

TPS62140ARGTT from Texas Instruments, in a TQFN-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 | SW | output | Switch node connected to the internal MOSFET switches; connect the inductor between SW and the output capacitor. |
| 2 | SW | output | Switch node connected to the internal MOSFET switches; connect the inductor between SW and the output capacitor. |
| 3 | SW | output | Switch node connected to the internal MOSFET switches; connect the inductor between SW and the output capacitor. |
| 4 | PG | output | Open-drain power-good output: high means VOUT is ready, low means VOUT is below nominal regulation; requires a pullup resistor. |
| 5 | FB | input | Voltage feedback input of the adjustable version; connect a resistive voltage divider to this pin, and connect it to AGND on fixed-output versions for improved thermal performance. |
| 6 | AGND | power_in | Analog ground; must be connected directly to the exposed thermal pad and the common ground plane. |
| 7 | FSW | input | Switching frequency select: low gives about 2.5 MHz and high gives about 1.25 MHz (connect to VOUT or PG for high); an internal pulldown keeps it low if floating. |
| 8 | DEF | input | Output voltage scaling: low selects nominal output and high selects nominal plus 5%; an internal pulldown keeps it low if floating. |
| 9 | SS/TR | input | Soft-start and tracking input; an external capacitor on this pin sets the internal voltage reference rise time and can be used for tracking and sequencing. |
| 10 | AVIN | power_in | Supply voltage for the control circuitry; connect to the same source as PVIN. |
| 11 | PVIN | power_in | Supply voltage for the power stage; connect to the same source as AVIN. |
| 12 | PVIN | power_in | Supply voltage for the power stage; connect to the same source as AVIN. |
| 13 | EN | input | Enable input: high enables the device and low disables it; an internal pulldown keeps it low if floating. |
| 14 | VOS | input | Output voltage sense pin and connection for the control loop circuitry. |
| 15 | PGND | power_in | Power ground; must be connected directly to the exposed thermal pad and the common ground plane. |
| 16 | PGND | power_in | Power ground; must be connected directly to the exposed thermal pad and the common ground plane. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPS62140ARGTT`
- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`
- 3D model: TQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `tps62140argtt-etched.step` / `tps62140argtt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps62140argtt.step` / `tps62140argtt.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/tps62140) (42 pp, sha256 `4bee4a4bd05d3236`, retrieved 2026-10-08, 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/tps62140argtt-datasheet.pdf)