This data sheet introduces the features and specifications of the PROFET® BTS 443 P high side power switch. The switch has built-in protection functions, including reverse battery protection, short circuit protection, current limiting, overload protection, thermal shutdown, overvoltage protection (including load dump), power ground protection and power Vbb protection. The switch also has fast demagnetization and electrostatic discharge (ESD) protection. The switch is suitable for 12V and 24 V DC grounded loads and can replace electromechanical relays, fuses and discrete circuits.
The Infineon BTS443P PROFET is a smart high‑side power switch that integrates reverse‑battery protection, short‑circuit limitation, overload, thermal shutdown, over‑voltage, loss‑of‑ground, loss‑of‑Vbb and ESD protection. It provides proportional load‑current sensing and diagnostic feedback for 12 V and 24 V DC grounded loads.
The document details pin functions, maximum ratings, thermal and electrical characteristics, diagnostic parameters, truth table operation, input‑circuit protection, and package information (TO‑252‑5‑1). It also includes ordering codes and regulatory notices.
| On‑state resistance (R_ON) | 16 mΩ |
|---|---|
| Load current (I_L) | 2 A |
| Over‑voltage protection voltage | 61 V – 68 V |
| Package | TO‑252‑5‑1 (D‑Pak‑5) |