ET-P17
TPS7A02 Nano-Power 3.3 V LDO
3.3 V 200 mA regulator with only 25 nA quiescent current
AED 15.00
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Overview
3.3 V 200 mA regulator with only 25 nA quiescent current
The ET-P17 is built around the TI TPS7A0233 — 3.3V, 200mA, 25nA quiescent, 270mV dropout.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Coin-cell and LiPo sensor nodes
- Years-long battery projects
- Supercap-backed circuits
Key features
What makes it different
IC
TI TPS7A0233: 3.3V, 200mA, 25nA quiescent, 270mV dropout
Use
Coin-cell / LiPo / supercap sensor nodes where the AP2112K's 55µA is too much
No LED
Deliberately no power LED (it would draw 50 000× the regulator Iq)
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 TPS7A0233: 3.3V, 200mA, 25nA quiescent, 270mV dropout |
|---|---|
| Use | Coin-cell / LiPo / supercap sensor nodes where the AP2112K's 55µA is too much |
| No LED | Deliberately no power LED (it would draw 50 000× the regulator Iq) |
| Size | 25.4 × 12.7 mm |
|---|---|
| Mounting | 2 mounting holes (M2.5) |
| Connectors | 4-pin 2.54 mm header · Screw terminal 2P 5.0mm 17A (THT) — In / out |
| Main IC | TPS7A0233PDBVR (LCSC C2887324) |
| Revision | Rev A |
Performance
Quiescent current
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.5–6V |
| 2 | EN | Control | Pulled high (10M), drive low = off |
| 3 | GND | Ground | Ground |
| 4 | 3V3 | Power | 200mA |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-P17 TPS7A02 Nano-Power 3.3 V LDO (assembled)
- 1 × 4-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, EN, GND, 3V3
Compare
Which regulator or switch?
| TPS7A02 Nano-Power 3.3 V LDO (this board)This board | ET-P16 TPS22918 Load Switch | ET-P18 Dual LDO 3.3 V + 1.8 V | ET-P19 TPL5110 Low-Power Timer | |
|---|---|---|---|---|
| What it does | 3.3 V 200 mA regulator with only 25 nA quiescent current | GPIO-controlled 2 A power switch with soft-start | 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 | Coin-cell and LiPo sensor nodes | Turning sensors fully off between readings | 1.8 V sensors next to 3.3 V logic | Battery-powered loggers with any MCU |
| Price | 15 AED | 28 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.