# TPS54561QDPRTQ1

**Texas Instruments** · DC-DC Converters · WSON-10-EP(4x4)

TPS54561QDPRTQ1 from Texas Instruments, in a WSON-10-EP(4x4). 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 | BOOT | output | The device requires a bootstrap capacitor between BOOT and SW; if the voltage on this capacitor falls below the minimum required to operate the high-side MOSFET, the gate driver switches off until the capacitor recharges. |
| 2 | VDD | power_in | Input supply pin with a 4.5-V to 60-V operating range. |
| 3 | EN | input | Enable pin with an internal pullup current source; pull below 1.2 V to disable and float to enable, and the input undervoltage lockout can be adjusted with two resistors. |
| 4 | SS/TR | input | Soft-start and tracking input; an external capacitor sets the output rise time, and a voltage applied to this pin overrides the internal reference to allow tracking and sequencing. |
| 5 | RT/CLK | input | Resistor timing and external clock input; an external resistor to ground sets the switching frequency, and when pulled above the PLL upper threshold the pin becomes a high-impedance synchronization clock input. |
| 6 | FB | input | Inverting input of the transconductance (gm) error amplifier. |
| 7 | COMP | output | Error amplifier output and input to the output switch-current comparator (PWM comparator); frequency compensation components connect to this pin. |
| 8 | GND | power_in | Ground pin; to ensure proper operation, it must be electrically connected to the copper pad under the IC on the printed circuit board. |
| 9 | SW | input | Source of the internal high-side power MOSFET and the switching node of the converter (datasheet I/O column lists this pin as I). |
| 10 | PWRGD | output | Open-drain power-good output that asserts when the output voltage is low because of thermal shutdown, dropout, overvoltage, or EN shutdown. |
| 11 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-10-EP(4x4) |
| Category | Power Supply Chip |
| Pins | 11 |

## CAD (KiCad official)

- Symbol: `TPS54561QDPRTQ1`
- Footprint: `Package_SON:WSON-10-1EP_4x4mm_P0.8mm_EP2.6x3mm`
- 3D model: WSON-10-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `tps54561qdprtq1-etched.step` / `tps54561qdprtq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps54561qdprtq1.step` / `tps54561qdprtq1.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/tps54561-q1) (54 pp, sha256 `6999bc04acb346ca`, 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/tps54561qdprtq1-datasheet.pdf)