ET-P19
TPL5110 Low-Power Timer
35 nA timer that switches your project on and off
AED 15.00
Out of stockOverview
35 nA timer that switches your project on and off
The ET-P19 is built around the TI TPL5110 — 35nA timer, period 100ms–7200s set by one resistor.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Battery-powered loggers with any MCU
- Hourly sensor wake-ups
- Cutting sleep current to nano-amps
Key features
What makes it different
IC
TI TPL5110: 35nA timer, period 100ms–7200s set by one resistor
Switch
AO3401A P-FET, 4A, high side
Operation
Timer turns the load on, the load MCU raises DONE when finished → power cut until the next period
Use
Years-long battery sensor nodes with any MCU (ESP32 deep sleep alternative)
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 TPL5110: 35nA timer, period 100ms–7200s set by one resistor |
|---|---|
| Switch | AO3401A P-FET, 4A, high side |
| Operation | Timer turns the load on, the load MCU raises DONE when finished → power cut until the next period |
| Use | Years-long battery sensor nodes with any MCU (ESP32 deep sleep alternative) |
| Size | 25.4 × 17.8 mm |
|---|---|
| Mounting | 2 mounting holes (M2.5) |
| Connectors | 4-pin 2.54 mm header · JST PH 2P R/A SMD (LiPo) — Battery in / load out |
| Main IC | TPL5110QDDCRQ1 (LCSC C1539984) |
| Revision | Rev A |
Performance
Sleep current
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 1.8–5.5V |
| 2 | GND | Ground | Ground |
| 3 | VOUT | Power | Switched VIN |
| 4 | DONE | Signal | Load MCU pulls high to switch off |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-P19 TPL5110 Low-Power Timer (assembled)
- 1 × 4-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, GND, VOUT, DONE
Compare
Which regulator or switch?
| TPL5110 Low-Power Timer (this board)This board | ET-P16 TPS22918 Load Switch | ET-P17 TPS7A02 Nano-Power 3.3 V LDO | ET-P18 Dual LDO 3.3 V + 1.8 V | |
|---|---|---|---|---|
| What it does | 35 nA timer that switches your project on and off | 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 |
| Interface | — | ON pin, 1V-logic compatible, 100k pull-down = off… | — | — |
| Best for | Battery-powered loggers with any MCU | Turning sensors fully off between readings | Coin-cell and LiPo sensor nodes | 1.8 V sensors next to 3.3 V logic |
| Price | 15 AED | 28 AED | 15 AED | 22 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.