This data sheet provides the technical specifications of PROFET® BTS 443 P, including reverse battery protection, short circuit protection, current limitation, overload protection, thermal shutdown, overvoltage protection, loss of ground protection, Vbb protection, very low standby current, fast demagnetization, electrostatic discharge protection, optimized static electromagnetic compatibility, etc.
The BTS443P is a smart high‑side power switch from Infineon that integrates multiple protection functions such as reverse‑battery, over‑voltage, short‑circuit, overload, thermal shutdown and ESD protection. It includes a built‑in current‑sense circuit that provides proportional feedback for load monitoring.
The datasheet provides pin definitions, maximum ratings, thermal and electrical characteristics, diagnostic functions, and package information (TO‑252‑5‑1 D‑Pak). It also describes the Reversave™ reverse‑battery protection scheme and how to connect multiple devices in parallel for higher current capability.
| Continuous load current (IL) | 2 A |
|---|---|
| ESD capability (Human Body Model) | 4 kV |
| Package | TO‑252‑5‑1 (D‑Pak‑5) |
The device can continuously drive up to 2 A, and it can tolerate short‑circuit currents up to 110 A.
It includes reverse‑battery protection, over‑voltage (including load‑dump), short‑circuit, overload, thermal shutdown, and electrostatic‑discharge protection.
The current‑sense output provides a proportional current proportional to the load current with a typical sense ratio of about 8200.
The part is supplied in a TO‑252‑5‑1 D‑Pak‑5 surface‑mount package.