ET-P18
Dual LDO 3.3 V + 1.8 V
Two regulated rails from 3.6–6 V
AED 22.00
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Overview
Two regulated rails from 3.6–6 V
The ET-P18 is built around the AP2112K-3.3 (600mA) → XC6206 1.8V (250mA) cascaded.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- 1.8 V sensors next to 3.3 V logic
- FPGA and low-voltage I/O experiments
- Breadboard power
Key features
What makes it different
Regulators
AP2112K-3.3 (600mA) → XC6206 1.8V (250mA) cascaded
Use
Breadboard rails for 1.8V sensors/FPGA I/O next to 3.3V logic
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
| Regulators | AP2112K-3.3 (600mA) → XC6206 1.8V (250mA) cascaded |
|---|---|
| Use | Breadboard rails for 1.8V sensors/FPGA I/O next to 3.3V logic |
| 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) — Input |
| Main IC | AP2112K-3.3TRG1 (LCSC C51118) |
| Revision | Rev A |
Performance
Current
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.6–6V |
| 2 | GND | Ground | Ground |
| 3 | 3V3 | Power | 600mA total |
| 4 | 1V8 | Power | ≤250mA, shares 3V3 budget |
| 5 | GND | Ground | Ground |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-P18 Dual LDO 3.3 V + 1.8 V (assembled)
- 1 × 5-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, GND, 3V3, 1V8, GND
Compare
Which regulator or switch?
| Dual LDO 3.3 V + 1.8 V (this board)This board | ET-P16 TPS22918 Load Switch | ET-P17 TPS7A02 Nano-Power 3.3 V LDO | ET-P19 TPL5110 Low-Power Timer | |
|---|---|---|---|---|
| What it does | Two regulated rails from 3.6–6 V | GPIO-controlled 2 A power switch with soft-start | 3.3 V 200 mA regulator with only 25 nA quiescent current | 35 nA timer that switches your project on and off |
| Interface | — | ON pin, 1V-logic compatible, 100k pull-down = off… | — | — |
| Best for | 1.8 V sensors next to 3.3 V logic | Turning sensors fully off between readings | Coin-cell and LiPo sensor nodes | Battery-powered loggers with any MCU |
| Price | 22 AED | 28 AED | 15 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.