This document describes the features and characteristics of the BTS 443 P model smart highside power switch from Infineon Technologies AG, including reverse battery protection, short circuit protection, overload protection, thermal shutdown, overvoltage protection, etc.
The Infineon BTS443P PROFET® data sheet describes a smart high‑side power MOSFET switch that integrates reverse‑battery protection, over‑voltage, short‑circuit and thermal shutdown functions. It provides diagnostic feedback via a proportional load‑current sense output and is intended for 12 V and 24 V DC grounded loads, replacing electromechanical relays and fuses.
Key sections include a product summary, pin configuration, maximum ratings, thermal and electrical characteristics, diagnostic features, truth table, ESD protection circuit, reverse‑battery protection (Reversave™), and package / ordering information.
| On‑state resistance (RON) | 16 mΩ typical |
|---|---|
| Load current (IL) | 2 A |
| Operating voltage range | 5.0 V – 36 V |
| Standby current | 2.5 pA (typ.) |
| Power dissipation (DC) | 42 W |
The typical on‑state resistance is 16 mΩ.
The device is rated for a load current of 2 A.
Standby current is about 2.5 pA at –40 °C.
It operates from 5.0 V up to 36 V.