# TPS4H000BQPWPRQ1

**Texas Instruments** · Power Distribution Switches · HTSSOP-20-EP

TPS4H000BQPWPRQ1 from Texas Instruments, in a HTSSOP-20-EP. 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 | IN1 | input | Input control for channel 1 activation; internal pulldown |
| 2 | IN2 | input | Input control for channel 2 activation; internal pulldown |
| 3 | IN3 | input | Input control for channel 3 activation; internal pulldown |
| 4 | IN4 | input | Input control for channel 4 activation; internal pulldown |
| 5 | SEH | input | CS channel-selection bit for current-sense multiplexing; internal pulldown |
| 6 | SEL | input | CS channel-selection bit for current-sense multiplexing; internal pulldown |
| 7 | FAULT | tri_state | Global fault report with open-drain structure, ORed logic for quad-channel fault conditions |
| 8 | CS | output | Current-sense analog output |
| 9 | CL | output | Adjustable current limit pin; connect to device GND if external current limit is not used |
| 10 | GND | power_in | Ground pin |
| 11 | DIAG_EN | input | Enable-disable pin for diagnostics; internal pulldown |
| 12 | THER | input | Thermal shutdown behavior control, latch off or auto-retry; internal pulldown |
| 13 | NC | unconnected | No internal connection |
| 14 | NC | unconnected | No internal connection |
| 15 | OUT4 | output | Output of channel 4 high side-switch, connected to the load |
| 16 | OUT3 | output | Output of channel 3 high side-switch, connected to the load |
| 17 | VS | power_in | Power supply voltage, 3.4 V to 40 V |
| 18 | VS | power_in | Power supply voltage, 3.4 V to 40 V |
| 19 | OUT2 | output | Output of channel 2 high side-switch, connected to the load |
| 20 | OUT1 | output | Output of channel 1 high side-switch, connected to the load |
| 21 | Thermal pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPS4H000BQPWPRQ1`
- Footprint: `Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm`
- 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tps4h000bqpwprq1-etched.step` / `tps4h000bqpwprq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps4h000bqpwprq1.step` / `tps4h000bqpwprq1.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/tps4h000-q1) (39 pp, sha256 `60b04c6aa1486b75`, retrieved 2026-10-01, 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 0.2`, 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/tps4h000bqpwprq1-datasheet.pdf)