BTS 441 T is a smart highside power switch with a one-channel 20mΩ on-state resistance. It is a µC compatible power switch for 5V, 12V and 24V DC applications. It can be used for all types of resistive, inductive and capacitive loads. The product also features short circuit protection, current limitation, overload protection, thermal shutdown, overvoltage protection (including load dump), reverse battery protection and loss of ground and loss of Vbb protection.
This document describes the Infineon BTS441T Smart Highside Power Switch, a N‑channel vertical power FET with an integrated charge pump and CMOS‑compatible input. It outlines the device’s basic functions, protection mechanisms, and typical applications such as 5 V, 12 V and 24 V DC loads, including resistive, inductive and capacitive loads.
The datasheet includes functional diagrams, pin assignments, maximum ratings, electrical characteristics, input specifications, package information, and timing diagrams. It also lists the integrated protection functions (short‑circuit, current‑limit, overload, thermal shutdown, over‑voltage, reverse‑battery, loss‑of‑ground, loss‑of‑Vbb, and ESD) and provides ordering codes for the standard and straight‑lead packages.
| On‑state resistance (RON) | 20 mΩ |
|---|---|
| Operating voltage (Vbb(on)) | 4.75 V – 41 V |
| Over‑voltage protection supply (Vob) | 43 V |
| Input voltage range (DC) | -10 V – +16 V |
| Package type (standard) | P‑TO220‑5‑11 |
A 150 Ω resistor must be placed in the GND connection to limit the current for over‑voltage protection.
The standard (staggered) package is P‑TO220‑5‑11 and the straight‑lead package is P‑TO220‑5‑12.