The VNF1248FTR from STMicroelectronics is an AEC-Q100 qualified High-Side Switch Controller with intelligent fuse protection specifically designed for automotive applications operating at 12 V, 24 V, and 48 V. It requires a supply voltage of 6-60 V and provides a low standby current of less than 75 µA. This switch controller controls an external Power MOSFET with a high-side configuration and interfaces with a host microcontroller through a 32-bit ST-SPI interface compatible with both 3.3 V and 5 V CMOS levels. It features a two-stage charge pump to drive the MOSFET gate and offers high precision unidirectional current sensing via an external high-side shunt resistor.  

This controller IC features a two-stage charge pump to drive the MOSFET gate and offers high precision unidirectional current sensing through an external high-side shunt resistor. It has integrated ADCs for monitoring junction temperature, MOSFET temperature via NTC resistor, output voltage, current sense voltage, and VDS voltage. This controller includes advanced protection and diagnostic functionalities such as battery undervoltage shutdown, external MOSFET desaturation shutdown, hard short circuit latch-off, current vs time latch-off emulating a fuse, overtemperature shutdown, and reverse battery protection. It is available in a surface-mount package that measures 5 x 5 mm and is ideal for automotive power distribution and intelligent high-current fuse replacement applications.