# TPS51285BRUKR

**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · WQFN-20-EP(3x3)

TPS51285BRUKR from Texas Instruments, in a WQFN-20-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 | CS1 | output | Sets the channel 1 overcurrent limit trip level. |
| 2 | VFB1 | input | Voltage feedback input. |
| 3 | VREG3 | power_out | 3.3-V LDO output. |
| 4 | VFB2 | input | Voltage feedback input. |
| 5 | CS2 | output | Sets the channel 2 overcurrent limit trip level. |
| 6 | EN2 | input | Channel 2 enable. |
| 7 | PGOOD | tri_state | Power good output flag; open-drain output, pull up to external rail via a resistor. |
| 8 | SW2 | output | Switch-node connection. |
| 9 | VBST2 | input | Supply input for high-side MOSFET (bootstrap terminal); connect capacitor from this pin to SW2 terminal. |
| 10 | DRVH2 | output | High-side driver output. |
| 11 | DRVL2 | output | Low-side driver output. |
| 12 | VIN | power_in | Power conversion voltage input; apply the same voltage as drain voltage of high-side MOSFETs of channel 1 and channel 2. |
| 13 | VREG5 | power_out | 5-V LDO output. |
| 14 | VO1 | input | Output voltage input, 5-V input for switch-over. |
| 15 | DRVL1 | output | Low-side driver output. |
| 16 | DRVH1 | output | High-side driver output. |
| 17 | VBST1 | input | Supply input for high-side MOSFET (bootstrap terminal); connect capacitor from this pin to SW1 terminal. |
| 18 | SW1 | output | Switch-node connection. |
| 19 | VCLK | output | Clock output for charge pump. |
| 20 | EN1 | input | Channel 1 enable. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-20-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 21 |

## CAD (KiCad official)

- Symbol: `TPS51285BRUKR`
- Footprint: `Package_DFN_QFN:UQFN-20-1EP_3x3mm_P0.4mm_EP1.85x1.85mm`
- 3D model: WQFN-20-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `tps51285brukr-etched.step` / `tps51285brukr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps51285brukr.step` / `tps51285brukr.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/tps51285a) (31 pp, sha256 `446980663889833c`, retrieved 2026-10-03, 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-4-5-20251001` (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/tps51285brukr-datasheet.pdf)