# TPS2042BDRBT

**Texas Instruments** · Power Distribution Switches · SON-8-EP(3x3)

TPS2042BDRBT from Texas Instruments, in a SON-8-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 | GND | power_in | Ground. |
| 2 | IN | power_in | Input voltage for both power switches, recommended operating range 2.7 V to 5.5 V. |
| 3 | EN1 | input | Enable input for IN-OUT1, logic low turns on the power switch (TPS2042B), input range 0 to 5.5 V. |
| 4 | EN2 | input | Enable input for IN-OUT2, logic low turns on the power switch (TPS2042B), input range 0 to 5.5 V. |
| 5 | OC2 | output | Overcurrent open-drain output, active low, for IN-OUT2. |
| 6 | OUT2 | power_out | Power-switch output for IN-OUT2, 500 mA maximum recommended continuous output current. |
| 7 | OUT1 | power_out | Power-switch output for IN-OUT1, 500 mA maximum recommended continuous output current. |
| 8 | OC1 | output | Overcurrent open-drain output, active low, for IN-OUT1. |
| 9 | PowerPAD | passive | Internally connected to GND and used to heat-sink the part to the circuit board traces; must be connected to the GND pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SON-8-EP(3x3) |
| Category | Power Management (PMIC) |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `TPS2042BDRBT`
- Footprint: `Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm`
- 3D model: SON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `tps2042bdrbt-etched.step` / `tps2042bdrbt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps2042bdrbt.step` / `tps2042bdrbt.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/tps2041b) (73 pp, sha256 `c1f5031ae4d6fdb4`, 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/tps2042bdrbt-datasheet.pdf)