Single-channel high-side switch for 12V/24V/48V automotive loads
It integrates an N-channel MOSFET with a 150 mOhm typical on-resistance and delivers up to 1.8 A continuous output current across a 6 V to 52 V load voltage range. No external Vcc supply is needed — the switch is self-powered from the load rail.
Built-in fault protection eliminates external clamp and sense circuits
The BTS452RAKSA1 integrates current limiting (fixed threshold), over-temperature shutdown, and over-voltage protection. These features protect the switch and the load during short circuits, overloads, and load-dump transients without requiring external TVS diodes or current-sense resistors. A status flag output and auto-restart behaviour simplify fault recovery in the ECU firmware — the switch attempts to re-close after a thermal shutdown once the junction cools, reducing software overhead for lamp or solenoid loads.
PG-TO252-5 package with exposed tab for thermal management
The device is supplied in a PG-TO252-5-11 package (DPak with 4 leads plus tab), a surface-mount power package.
This makes it suitable for both new production builds and ongoing aftermarket support without requalification risk.
