Infineon BTS4142NHUMA1 Smart Power High Side Switch, SIPMOS, 2.2A, SOT-223-4

The Infineon BTS4142NHUMA1 is a sophisticated smart power high-side switch, engineered using advanced Smart SIPMOS® technology. This single-output switch integrates a vertical N-channel power FET with a charge pump, providing robust and reliable control for a wide range of automotive and industrial applications. Its ground-referenced, CMOS-compatible input simplifies integration into complex electronic control units, offering both embedded protection and comprehensive diagnostic functions for enhanced system safety and reliability.

Designed for demanding environments, this switch features an extensive suite of protective functions to ensure operational integrity. These include precise current limitation at 2.2A, overload protection, and a thermal shutdown mechanism with automatic restart. It is also safeguarded against overvoltage events, including load dump, and incorporates undervoltage shutdown with auto-restart and hysteresis. The device offers reverse battery protection when used with an external resistor, loss of ground (GND) and loss of supply (Vbb) protection, and is designed to switch and safely clamp inductive loads, managing negative output voltage spikes effectively.

Qualified to the stringent AEC-Q100 standard, this component is built for automotive-grade reliability. It exhibits very low standby current consumption, contributing to energy efficiency in systems with constant power supply. The device is supplied in a compact PG-SOT223-4 surface-mount package, making it suitable for space-constrained, decentralised modules. Its robust ESD protection and improved electromagnetic compatibility (EMC) performance further ensure stable operation in electrically noisy environments typical of vehicle applications.

Key Applications

This versatile high-side switch is ideal for numerous automotive and heavy-duty vehicle solutions, particularly in 24V systems. Key application areas include powertrain and clutch/gea