ET-P16
TPS22918 Load Switch
GPIO-controlled 2 A power switch with soft-start
AED 28.00
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Overview
GPIO-controlled 2 A power switch with soft-start
The ET-P16 is built around the TI TPS22918 — 2A, 53mΩ, 1–5.5V, adjustable slew (CT), quick output discharge.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Turning sensors fully off between readings
- Inrush control for big capacitors
- Power sequencing
Key features
What makes it different
IC
TI TPS22918: 2A, 53mΩ, 1–5.5V, adjustable slew (CT), quick output discharge
Control
ON pin, 1V-logic compatible, 100k pull-down = off at reset
Use
Power-gate sensors/radios from a GPIO to cut sleep current; inrush control for big caps
Open documentation
Schematic, BOM and layout notes published for every board.
Breadboard friendly
Standard 2.54 mm pitch and M2.5 mounting holes.
Specifications
Technical specifications
| IC | TI TPS22918: 2A, 53mΩ, 1–5.5V, adjustable slew (CT), quick output discharge |
|---|---|
| Control | ON pin, 1V-logic compatible, 100k pull-down = off at reset |
| Use | Power-gate sensors/radios from a GPIO to cut sleep current; inrush control for big caps |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 2 mounting holes (M2.5) |
| Connectors | 5-pin 2.54 mm header · Screw terminal 2P 5.0mm 17A (THT) — In / out |
| Main IC | TPS22918DBVR (LCSC C131941) |
| Revision | Rev A |
Performance
Resistance
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 1–5.5V |
| 2 | GND | Ground | Ground |
| 3 | ON | Control | High = on (≥1V logic) |
| 4 | VOUT | Power | Switched |
| 5 | GND | Ground | Ground |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-P16 TPS22918 Load Switch (assembled)
- 1 × 5-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, GND, ON, VOUT, GND
Compare
Which regulator or switch?
| TPS22918 Load Switch (this board)This board | ET-P17 TPS7A02 Nano-Power 3.3 V LDO | ET-P18 Dual LDO 3.3 V + 1.8 V | ET-P19 TPL5110 Low-Power Timer | |
|---|---|---|---|---|
| What it does | GPIO-controlled 2 A power switch with soft-start | 3.3 V 200 mA regulator with only 25 nA quiescent current | Two regulated rails from 3.6–6 V | 35 nA timer that switches your project on and off |
| Interface | ON pin, 1V-logic compatible, 100k pull-down = off… | — | — | — |
| Best for | Turning sensors fully off between readings | Coin-cell and LiPo sensor nodes | 1.8 V sensors next to 3.3 V logic | Battery-powered loggers with any MCU |
| Price | 28 AED | 15 AED | 22 AED | 15 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.