The BTS441R is a high side power switch that provides embedded protective functions. It is a µC compatible power switch for 5V, 12V and 24V DC applications including resistive, inductive and capacitive loads. It is also suitable for loads with high inrush currents, such as lamps. It can replace electromechanical relays, fuses and discrete circuits.
The BTS441R is a smart high‑side power switch that integrates a charge‑pump N‑channel MOSFET with embedded protection functions. It is designed for uC‑compatible power switching in 5 V, 12 V and 24 V DC applications and can handle resistive, inductive and capacitive loads, including those with high inrush currents such as lamps.
The device offers a range of built‑in protections—short‑circuit, current‑limit, overload, thermal shutdown, over‑voltage, reverse‑battery, loss‑of‑ground and ESD—plus diagnostic feedback via an open‑drain status output. Detailed electrical characteristics, maximum ratings and package information are provided for PCB designers.
| On‑state resistance (RON) | 20 mΩ |
|---|---|
| Operating voltage (Vbb(on)) | 4.75 V – 41 V |
| Nominal load current (IL) | 21 A |
| Current limitation | 65 A |
| ESD capability (Human Body Model) | 1.0 kV |
The nominal load current is specified as 21 A.
The on‑state resistance (RON) is 20 mΩ.