1 Features
• Quad-channel 120mΩ automotive smart high-side
switch with full diagnostics
– Open-drain status output
– Current sense analog output
• Wide operating voltage 3V to 28V
• Low power mode (LPM) with automatic entry and
exit
– IQ,LPM < 20μA/ch with all 4 channels ON and in
LPM mode
• Ultra-low sleep current, <1μA at 25°C
• Selectable current limit, 0.25A to 5A
• Protection
– Overload and short-circuit protection
– Thermal shutdown and swing with self recovery
– Inductive load negative voltage clamp
– Loss-of-GND, loss-of-battery, and reverse
battery protection
• Diagnostics
– Global fault report for fast interrupt
– Overcurrent and short-to-ground detection
– Open-load and short-to-battery detection
• Qualified for automotive applications
– AEC-Q100 qualified with the following results:
• Device temperature grade 1: –40°C to
125°C ambient operating temperature range
– Electrical transient disturbance immunity
certification of ISO7637-2 and ISO16750-2
• 28-pin thermally-enhanced HVSSOP package

2 Applications
• ADAS modules
• Automotive display module
• Body control module

3 Description
TPS4HC120-Q1 is an automotive quad-channel,
smart high-side switch, with integrated NMOS power
FET and charge pump, designed to meet the
requirements of 12V automotive battery systems.
The low RON (120mΩ) minimizes the device power
dissipation when driving a wide range of output load
current up to 2A when all four channels are enabled
or 2.5A when only one channel is enabled.
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. TPS4HC120-Q1
implements a selectable current limiting circuit that
improves the reliability of the system by reducing
inrush current when driving large capacitive loads
and minimizing overload current. The device offers
10 selectable current limit settings (0.25A to 5A)
based on the external resistor used on the ILIM pin.
The device also provides an accurate load current
sense that allows for improved load diagnostics such
as overload and open-load detection, which enables
better predictive maintenance.
TPS4HC120-Q1 is available in a 28-pin, 4.9mm ×
7.1mm HVSSOP leaded package with 0.5mm pin
pitch minimizing the PCB footprint.