1 Features

• Single-channel smart automotive high-side switch

with full diagnostics

– Open-drain status output

– Current sense analog output (1)

– ON and OFF state open-load detection (1)

• Wide operating voltage: 3V to 28V

• Low standby current, < 0.5μA at 85°C

• Operating junction temperature, –40°C to 150°C

• Selectable current limit from 0.2A to 2.1A

• Protection

– Overload and short-circuit protection

– Inductive load negative voltage clamp

– Undervoltage Lockout (UVLO) protection

– Thermal shutdown and swing with self recovery

– Loss-of-GND, loss-of-battery, and reverse

battery protection

– Auto-retry on soft-short, latch on hard-short(1)

• Diagnostic

– Fault report for fast interrupt

– On- and Off-state output open-load and shortto-

battery detection(1)

– Overcurrent and short-to-ground detection

– Thermal shutdown and swing detection

• Qualifications

– AEC-Q100 qualified for automotive:

• Temperature: –40°C to 125°C, TA

– Electrical transient disturbance immunity

certification of ISO7637-2 and ISO16750-2

• 8-pin small form factor SOT package

2 Applications

• ADAS modules

• Automotive display module

• Body control module

3 Description

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, ultrasmall

form-factor 2.1mm × 1.6mm SOT package with

0.5mm pin pitch, minimizing the PCB footprint.