Automotive Power

New Power HITFET™ BTS 3256

Block diagram

Our new power HITFET™ is the most advanced protected low-side switch in the market. The highly robust design of BTS 3256 includes power- and timer-controlled current limitation and the capability to drive inrush loads.

BTS 3256 also features an easy-to-adjust slew rate to find the optimum balance between switching losses and EMC requirements. The device features a 10mΩ power MOSFET combined with a logic control chip (in a chip-on-chip design). It is pinpin- and PCB-compatible with BTS 3160D and can be used as a 1:1 restart variant of BTS 3160D or a faster switching solution to drive solenoids.

Similar to the BTS 3160D, it comes in a DPAK 5-pin package, offering a great ratio between R_DS(on) and footprint.

Building on the common HITFET™ feature set, the BTS 3256 also comes with the power HITFET™  feature set. Highlights include digital status feedback on the input pin and best R_DS(on) due to the battery supply pin.


 
 

Microcontroller-controllable protected low-side switch with digitally readable feedback Max. switching speed of 12kHz enables PWM-controlled solenoid driving Slew rate control pin for optimum balance between EMC requirements and switching speed Always best RDS(on) due to battery supply pin Timer and power-controlled active current limitation Thermal and overload protection with timer-controlled auto restart behavior Clear feedback during PWM operation due to timer-delayed restart ROHS-compliant AEC-qualified Very low leakage current

Safety relay replacement, e.g. in active suspension system Driving inrush loads with and without PWM, like motors or lamps Restarting solution for interior light dimming Solenoid driving