# TPS51211DSCR

**Texas Instruments** · Power Management - Specialized · WSON-10-EP(3x3)

TPS51211DSCR from Texas Instruments, in a WSON-10-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 | PGOOD | output | Power Good window comparator open-drain output that must be pulled up to 5 V or an appropriate signal voltage, with continuous sink capability of 1 mA; it goes high 1 ms after VFB is within limits and goes low after a 2-µs delay when power is bad. |
| 2 | TRIP | input | Overcurrent-limit (OCL) detection threshold setting pin, sourcing 10 µA at room temperature with a 4700 ppm/°C temperature coefficient, where 0.2 V ≤ VTRIP ≤ 3 V sets the OCL trip voltage. |
| 3 | EN | input | SMPS enable pin; short to GND to disable the device. |
| 4 | VFB | input | SMPS feedback input to which the feedback resistor divider is connected. |
| 5 | TST | input | Test pin used for production-line testing only; pull down to GND with a resistor of 470 kΩ or less. |
| 6 | DRVL | output | Synchronous MOSFET gate driver output, referenced to GND and driven from the V5IN voltage. |
| 7 | V5IN | power_in | 5-V supply input with +30%/-10% tolerance, which also feeds the internal bootstrap MOSFET switch; recommended operating range is 4.5 V to 6.5 V. |
| 8 | SW | input | Switch node serving as the high-side MOSFET gate drive return, used for on-time generation and output discharge; recommended input range is -1 V to 28 V (-4 V to 28 V for transients under 30% of the period). |
| 9 | DRVH | output | High-side MOSFET gate driver output, floating on the SW node, with gate drive voltage defined by the VBST-to-SW bootstrap capacitor voltage. |
| 10 | VBST | input | Supply input for the high-side MOSFET driver (bootstrap); connect a flying capacitor from this pin to SW, with the pin internally connected to V5IN through the bootstrap MOSFET switch. |
| 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(3x3) |
| Category | Power Management (PMIC) |
| Pins | 11 |

## CAD (KiCad official)

- Symbol: `TPS51211DSCR`
- Footprint: `Package_SON:VSON-10-1EP_3x3mm_P0.5mm_EP1.2x2mm`
- 3D model: WSON-10-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `tps51211dscr-etched.step` / `tps51211dscr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps51211dscr.step` / `tps51211dscr.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/tps51211) (30 pp, sha256 `ee7b7bc90fd35a3d`, retrieved 2026-10-08, tier: lcsc)
- **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/tps51211dscr-datasheet.pdf)