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TPS481HS04-Q1

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Automotive, 48V, 4mΩ smart high-side switch with I2T wire protection, low-IQ mode and SPI

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Data sheet

TPS481HS04-Q1

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Data sheet Order now

Product details

Number of channels 1 Rating Automotive Operating voltage (max) (V) 60 Operating voltage (min) (V) 6 Ron (typ) (mΩ) 4900 Imax (A) 18.5 Current limit type Adjustable FET Internal Features Charging Capability, Current sense output, Current sense/monitor, I2T, Low power, Programmable current limit, SPI, Thermal shutdown, Undervoltage Lock Out (UVLO) Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Automotive load dump compatibility, Current monitoring, Inductive load compatibility, Inrush current control, Short circuit protection, Thermal shutdown
Number of channels 1 Rating Automotive Operating voltage (max) (V) 60 Operating voltage (min) (V) 6 Ron (typ) (mΩ) 4900 Imax (A) 18.5 Current limit type Adjustable FET Internal Features Charging Capability, Current sense output, Current sense/monitor, I2T, Low power, Programmable current limit, SPI, Thermal shutdown, Undervoltage Lock Out (UVLO) Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Automotive load dump compatibility, Current monitoring, Inductive load compatibility, Inrush current control, Short circuit protection, Thermal shutdown
VQFN-HR (RBL) 21 31.625 mm² (5.75 mm × 5.5 mm)
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to 125°C
    • Withstands 70V load dump
  • Single channel SPI controlled smart high-side switch with integrated nFET.
  • Integrated wire-harness protection without MCU involvement and a SPI programmable fuse curve
    • Protection against persistent overload condition
  • User programmable EEPROM
  • Improve system level reliability through SPI programmable adjustable overcurrent protection
  • SPI configurable capacitive charging mode to drive a wide range of capacitive input ECUs load current needs.
  • Low quiescent current, low power ON-state to supply always-ON loads with automatic wake on load current increase with wake signal to MCU
  • Robust integrated output protection:
    • Integrated thermal protection
    • Protection against short-to-ground
    • Protection against reverse battery events including automatic switch on of FET with reverse supply voltage
    • Automatic shut off on loss of battery and ground
    • Integrated output clamp to demagnetize inductive loads
  • Digital sense output via SPI can be configured to measure:
    • Load current accurately with integrated ADC
    • Output or supply voltage, FET temperature
  • Provides full fault diagnostics through SPI interface and indication through FLT pin
    • Detection of open load and short-to-battery
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to 125°C
    • Withstands 70V load dump
  • Single channel SPI controlled smart high-side switch with integrated nFET.
  • Integrated wire-harness protection without MCU involvement and a SPI programmable fuse curve
    • Protection against persistent overload condition
  • User programmable EEPROM
  • Improve system level reliability through SPI programmable adjustable overcurrent protection
  • SPI configurable capacitive charging mode to drive a wide range of capacitive input ECUs load current needs.
  • Low quiescent current, low power ON-state to supply always-ON loads with automatic wake on load current increase with wake signal to MCU
  • Robust integrated output protection:
    • Integrated thermal protection
    • Protection against short-to-ground
    • Protection against reverse battery events including automatic switch on of FET with reverse supply voltage
    • Automatic shut off on loss of battery and ground
    • Integrated output clamp to demagnetize inductive loads
  • Digital sense output via SPI can be configured to measure:
    • Load current accurately with integrated ADC
    • Output or supply voltage, FET temperature
  • Provides full fault diagnostics through SPI interface and indication through FLT pin
    • Detection of open load and short-to-battery

The TPS481HS04-Q1 device is a single channel, smart high-side switch controlled through a serial peripheral interface (SPI) and is intended for power distribution as well as actuator drive applications. The device integrates robust protection to ensure output wire and load protection against short circuit or overload conditions. The device features overcurrent protection which is configurable via SPI with sufficient flexibility to support loads that require large inrush currents, while providing improved protection. Further, the device integrates a programmable fuse profile (current versus time) that turns off the switch under persistent overload condition.

The device supports a SPI-configurable capacitive charging mode for ECU loads in power distribution switch applications. The device also includes two low power mode (LPM) states, an auto entry mode or a manual entry mode, that enables the device to provide current to the load ECU while only consuming about 10-20µA of current.

By reporting load current and the channel output voltage and output FET temperature to a system MCU, the device enables diagnosis of switch and load failures.

The TPS481HS04-Q1 is available in a QFN package which allows for reduced PCB footprint.

The TPS481HS04-Q1 device is a single channel, smart high-side switch controlled through a serial peripheral interface (SPI) and is intended for power distribution as well as actuator drive applications. The device integrates robust protection to ensure output wire and load protection against short circuit or overload conditions. The device features overcurrent protection which is configurable via SPI with sufficient flexibility to support loads that require large inrush currents, while providing improved protection. Further, the device integrates a programmable fuse profile (current versus time) that turns off the switch under persistent overload condition.

The device supports a SPI-configurable capacitive charging mode for ECU loads in power distribution switch applications. The device also includes two low power mode (LPM) states, an auto entry mode or a manual entry mode, that enables the device to provide current to the load ECU while only consuming about 10-20µA of current.

By reporting load current and the channel output voltage and output FET temperature to a system MCU, the device enables diagnosis of switch and load failures.

The TPS481HS04-Q1 is available in a QFN package which allows for reduced PCB footprint.
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* Data sheet TPS481HS04-Q1 4mΩ , Automotive Single-Channel , SPI Controlled High-Side Switch with Integrated I2 t Wire Protection and Low Power Mode datasheet PDF | HTML Sep 1, 2026

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HSS-HCMOTHERBRDEVM — Smart fuse evaluation module

The HSS-HCMOTHERBRDEVM and corresponding daughter cards (such as the HSS-2HCS10EVM) are used to showcase and evaluate all features of the Texas Instruments' smart fuse high-side switch portfolio. The motherboard is designed to be used with several different daughter cards enabling the use of a (...)

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