Automotive, single-channel 120-mΩ smart high-side switch

The TPS1HC120-Q1 is a fully protected high-side

switch, with integrated NMOS power FET and charge pump, designed to meet the

requirements of 12V automotive systems. The low RON (120mΩ typical)

minimizes the device power dissipation when driving a wide range of output load

current up to 1.5A.

The device integrates protection features such as thermal shutdown, output clamp, and current

limit. These features improve system robustness during fault events such as short

circuit. The device implements a selectable high-accuracy current limit that

improves the reliability of the system by reducing inrush current when driving large

capacitive loads. For the A/B variants, the device also provides an accurate current

sense that allows for improved load diagnostics such as overload and open-load

detection. Low logic high threshold, VIH, of 1.5V on the input pins allow

use of MCUs down to 1.8V.

The TPS1HC120-Q1 can be used to drive a wide variety of resistive, inductive, and capacitive loads, including ADAS cameras, LEDs, relays, solenoids, and heaters. The device is available in a 8-pin, ultra-small form-factor 2.1mm × 1.6mm SOT package with 0.5mm pin pitch, minimizing the PCB footprint.