ET-P24
TPS25947 eFuse Protector
Resettable electronic fuse with adjustable current limit
AED 49.00
Out of stockOverview
Resettable electronic fuse with adjustable current limit
The ET-P24 is built around the TI TPS259474A — 2.7–23V, 28mΩ, adjustable current limit 0.5–6A, overvoltage clamp, thermal shutdown, auto-retry. It runs from 2.7–23V on screw terminals, 5A max through the terminals.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Protecting 12 V projects from shorts
- Soft-start for big capacitors
- Hot-plug power rails
Key features
What makes it different
eFuse
TI TPS259474A: 2.7–23V, 28mΩ, adjustable current limit 0.5–6A, overvoltage clamp, thermal shutdown, auto-retry
Settings
Current limit ≈ 2.5A (R3), UVLO ≈ 6.3V (R1/R2), soft-start ≈ 3ms (C4) — change resistors for other values
Control
EN input, PG output
Supply
2.7–23V on screw terminals, 5A max through the terminals
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
| eFuse | TI TPS259474A: 2.7–23V, 28mΩ, adjustable current limit 0.5–6A, overvoltage clamp, thermal shutdown, auto-retry |
|---|---|
| Settings | Current limit ≈ 2.5A (R3), UVLO ≈ 6.3V (R1/R2), soft-start ≈ 3ms (C4) — change resistors for other values |
| Control | EN input, PG output |
| Supply | 2.7–23V on screw terminals, 5A max through the terminals |
| Size | 35.0 × 25.0 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 4-pin 2.54 mm header · Screw terminal 2P 5.0mm 17A (THT) — VIN · Screw terminal 2P 5.0mm 17A (THT) — VOUT |
| Main IC | TPS259474ARPWR (LCSC C3662807) |
| Revision | Rev A |
| Libraries | No software needed; PG to any GPIO |
|---|
Performance
Protection
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIO | Power | Host logic level (PG pull-up) |
| 2 | GND | Ground | Ground |
| 3 | EN | Control | Low = off; also UVLO divider node |
| 4 | PG | Output | Power good (open-drain) |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-P24 TPS25947 eFuse Protector (assembled)
- 1 × 4-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIO, GND, EN, PG
- Libraries: No software needed
Compare
Which power board?
| TPS25947 eFuse Protector (this board)This board | ET-P21 PT4115 LED Driver 670 mA | ET-P22 USB-C 2S Li-ion Charger | ET-P23 LM317 Adjustable Regulator | |
|---|---|---|---|---|
| What it does | Resettable electronic fuse with adjustable current limit | Constant-current driver for 1–8 power LEDs, PWM dimming | Charge a 2S (7.4 V) pack from any 5 V USB-C charger | Clean adjustable 1.25–28 V linear supply, 1.5 A |
| Interface | EN input, PG output | PWM or analog dimming on DIM, 3.3/5V logic | USB-C 5V (any USB-C charger; 5V/2A or more for… | Vout + 3V … 35V |
| Best for | Protecting 12 V projects from shorts | 3 W power LED lamps | 7.4 V robot packs | Bench reference voltages |
| Price | 49 AED | 49 AED | 19 AED | 15 AED |
Downloads
Documents and design files
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