PROFET® BTS426L1 is a high side power switch launched by Texas Instruments. It has overload protection, current limitation, short circuit protection, thermal shutdown, overvoltage protection (including load dump) and other features. It can be applied to 12 V and 24 V DC grounded loads, replacing electromechanical relays, fuses and discrete circuits.
The BTS426L1 PROFET is a smart high‑side power switch with integrated overload, short‑circuit, over‑voltage, under‑voltage, and thermal protection. It offers a CMOS‑compatible input, diagnostic open‑drain output, and reverse‑battery protection, making it suitable for replacing electromechanical relays and fuses in 12 V and 24 V DC grounded loads.
The document details pin assignments, maximum ratings, electrical characteristics, protection functions, and recommended external components for safe operation. Package information and ordering codes for the TO‑220AB/5 package are also provided.
| Supply voltage (overvoltage protection) | 43 V |
|---|---|
| Supply voltage for full short circuit protection | 34 V |
| Power dissipation (DC) at 25 °C | 75 W |
| ESD protection (Human Body Model) voltage | 1.0 kV |
| Input resistance | 2.5 – 6 kΩ |
| Operating temperature range | -40 … +150 °C |
The overvoltage protection allows a supply voltage up to 43 V.
The device provides ESD protection up to 1.0 kV (Human Body Model).
The input resistance is specified between 2.5 kΩ and 6 kΩ.
It operates from –40 °C up to +150 °C.