# TPS54361QDPRTQ1

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

TPS54361QDPRTQ1 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, and the high-side MOSFET gate drive switches off when that capacitor voltage falls below the minimum required to operate it. |
| 2 | VIN | power_in | Input supply voltage with a 4.5-V to 60-V operating range. |
| 3 | EN | input | Enable pin with an internal pullup current source that disables the device when pulled below 1.2 V and enables it when floated, and it sets the input undervoltage lockout with two resistors. |
| 4 | SS/TR | input | Soft-start and tracking pin where an external capacitor sets the output rise time, and the pin voltage overrides the internal reference to allow tracking and sequencing. |
| 5 | RT/CLK | input | Resistor timing and external clock pin that sets the switching frequency, and becomes a synchronization input when pulled above the PLL upper threshold. |
| 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, where frequency compensation components connect. |
| 8 | GND | power_in | Ground pin that 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 | 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 | 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 Management (PMIC) |
| Pins | 11 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | VIN | -0.3 |  | 65 | V |  | 4 |
| Input voltage EN | EN | -0.3 |  | 8.4 | V |  | 4 |
| Input voltage BOOT | BOOT |  |  | 73 | V |  | 4 |
| Input voltage FB | FB | -0.3 |  | 3 | V |  | 4 |
| Input voltage COMP | COMP | -0.3 |  | 3 | V |  | 4 |
| Input voltage PWRGD | PWRGD | -0.3 |  | 6 | V |  | 4 |
| Input voltage SS/TR | SS/TR | -0.3 |  | 3 | V |  | 4 |
| Input voltage RT/CLK | RT/CLK | -0.3 |  | 3.6 | V |  | 4 |
| Output voltage BOOT-SW | BOOT-SW |  |  | 8 | V |  | 4 |
| Output voltage SW | SW | -0.6 |  | 65 | V |  | 4 |
| Output voltage SW 5-ns transient | SW | -7 |  | 65 | V | 5-ns transient | 4 |
| Output voltage SW 10-ns transient | SW | -2 |  | 65 | V | 10-ns transient | 4 |
| Operating junction temperature | TJ | -40 |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Supply input voltage | V(VIN) | 4.5 |  | 60 | V |  | 4 |
| Output voltage | VO | 0.8 |  | 58.8 | V |  | 4 |
| Output current | IO | 0 |  | 3.5 | A |  | 4 |
| Junction temperature | TJ | -40 |  | 150 | °C |  | 4 |
| Operating input voltage |  | 4.5 |  | 60 | V |  | 5 |
| Internal undervoltage lockout threshold |  | 4.1 | 4.3 | 4.48 | V | Rising | 5 |
| Operating nonswitching supply current |  |  | 152 | 200 | µA | V(FB) = 0.9 V, TA = 25°C | 5 |
| Shutdown supply current |  | 2.25 |  | 4.5 | µA | V(EN) = 0 V, 25°C, 4.5 V ≤ V(VIN) ≤ 60 V | 5 |
| Enable threshold voltage | V(EN)th | 1.1 | 1.2 | 1.3 | V | No voltage hysteresis, rising and falling | 5 |
| Input current at enable threshold -50 mV | II | -0.58 | -1.2 | -1.8 | µA | Enable threshold -50 mV | 5 |
| Hysteresis current | Ihys | -2.2 | -3.4 | -4.5 | µA |  | 5 |
| Voltage reference |  | 0.792 | 0.8 | 0.808 | V |  | 5 |
| On-resistance high-side MOSFET |  |  | 87 | 185 | mΩ | V(VIN) = 12 V, V(BOOT-SW) = 6 V | 5 |
| Error amplifier transconductance (gm) | gm |  | 350 |  | µMhos | -2 μA < I(COMP) < 2 μA, V(COMP) = 1 V | 5 |
| Error amplifier transconductance (gm) during soft-start | gm |  | 77 |  | µMhos | -2 μA < I(COMP) < 2 μA, V(COMP) = 1 V, V(FB) = 0.4 V | 5 |
| Min unity gain bandwidth |  | 2500 |  |  | kHz |  | 5 |
| Error amplifier source/sink COMP to SW current |  | -30 |  | 30 | µA | V(COMP) = 1 V, 100-mV overdrive | 5 |
| Current-limit threshold |  | 4.5 | 5.5 | 6.8 | A | All VIN and temperatures, open loop | 5 |
| Current-limit threshold |  | 4.5 | 5.5 | 6.3 | A | All temperatures, V(VIN) = 12 V, open loop | 5 |
| Current-limit threshold |  | 5.2 | 5.5 | 5.9 | A | V(VIN) = 12 V, TA = 25°C, open loop | 5 |
| RT/CLK high threshold |  | 1.55 |  | 2 | V |  | 5 |
| RT/CLK low threshold |  | 0.5 |  | 1.2 | V |  | 6 |
| Minimum VIN for defined output |  | 0.9 |  | 2 | V | V(PWRGD) < 0.5 V, I(PWRGD) = 100 µA | 6 |
| Switching frequency range using RT mode |  | 100 |  | 2500 | kHz |  | 6 |
| Switching frequency | ƒS | 450 | 500 | 550 | kHz | R(RT) = 200 kΩ | 6 |
| Switching frequency range using CLK mode |  | 160 |  | 2300 | kHz |  | 6 |
| Minimum CLK input pulse width |  |  |  | 15 | ns |  | 6 |
| Junction-to-ambient thermal resistance | RθJA |  | 35.1 |  | °C/W | standard board | 5 |
| Junction-to-top characterization parameter | ψJT |  | 0.3 |  | °C/W |  | 5 |
| Junction-to-board characterization parameter | ψJB |  | 12.5 |  | °C/W |  | 5 |
| Junction-to-case(top) thermal resistance | RθJCtop |  | 34.1 |  | °C/W |  | 5 |
| Junction-to-case(bottom) thermal resistance | RθJCbot |  | 2.2 |  | °C/W |  | 5 |
| Junction-to-board thermal resistance | RθJB |  | 12.3 |  | °C/W |  | 5 |

## CAD (KiCad official)

- Symbol: `TPS54361QDPRTQ1`
- Footprint: `Package_SON:WSON-10-1EP_4x4mm_P0.8mm_EP2.6x3mm`
- 3D model: WSON-10-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `tps54361qdprtq1-etched.step` / `tps54361qdprtq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps54361qdprtq1.step` / `tps54361qdprtq1.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/lit/ds/symlink/tps54361-q1.pdf) (53 pp, sha256 `f2fecc1f86f11f31`, retrieved 2026-11-05, tier: manufacturer)
- **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/tps54361qdprtq1-datasheet.pdf)