High-side switches can safely drive high currents into complex (resistive, inductive and capacitive) grounded loads in compliance with the harsh automotive environment. This requires both robust, low on-resistance power switch and accurate analog circuitry for diagnostic, protection and control functions.

ST’s high-side switches have 3 V and 5 V CMOS compatible inputs – for command – and outputs – for diagnostic and status – and are the perfect companions to a microcontroller.

Designed to work from -40 to +150°C, ST's high-side switches meet the stringent requirements set by international standards (such as AEC-Q100) and provide an extensive set of protection and diagnostic features such as:

  • Over-temperature protection and monitoring
  • Open-load detection both in on- and off-states
  • Shorted load protection
  • Overvoltage and undervoltage shutdown
  • Loss of ground and loss of Vcc protection
  • Vbat monitoring
  • Programmable latch-off

ST's high-side switches portfolio includes single, dual and quad configurations and power switch on-resistance values starting from 4 mΩ with both digital and analog status diagnostic. They are available in multiple power-optimized packages to best cover body electronics applications such as junction box, interior lighting and motor control.​

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