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.