# TPS54541DPRT

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

TPS54541DPRT 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 | A bootstrap capacitor is required between BOOT and SW; if its voltage falls below the minimum needed to operate the high-side MOSFET, the gate drive is switched off until the capacitor is refreshed. |
| 2 | VIN | power_in | Input supply voltage with a 4.5 V to 42 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 pin; an external capacitor sets the output rise time, and because this pin overrides the internal reference it can be used for tracking and sequencing. |
| 5 | RT/CLK | input | Resistor timing and external clock pin: an external resistor to ground sets the switching frequency, and pulling the pin above the PLL upper threshold makes it 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 (PWM) comparator; frequency compensation components connect to this pin. |
| 8 | GND | power_in | Ground pin, which must be electrically connected to the exposed thermal pad on the printed circuit board for proper operation. |
| 9 | SW | output | Source of the internal high-side power MOSFET and the switching node of the converter. |
| 10 | PWRGD | output | Power Good open-drain output that asserts low if the output voltage is out of regulation due to thermal shutdown, dropout, over-voltage, or EN shutdown. |
| 11 | Thermal Pad | power_in | Exposed thermal pad that must be electrically connected to the GND pin and the printed circuit board for proper operation. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPS54541DPRT`
- Footprint: `Package_SON:WSON-10-1EP_4x4mm_P0.8mm_EP2.6x3mm`
- 3D model: WSON-10-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `tps54541dprt-etched.step` / `tps54541dprt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps54541dprt.step` / `tps54541dprt.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/tps54541) (54 pp, sha256 `4b1d01bc1ac54658`, 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/tps54541dprt-datasheet.pdf)