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TPS1HA08-Q1

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40-V, 8-mΩ, 1-ch automotive smart high-side switch with selectable current Limit

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Data sheet

A newer version of this product is available

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NEW TPS1HC08-Q1 ACTIVE Automotive, 9.7mΩ, 10A single-channel smart high-side switch Smaller package

TPS1HA08-Q1

ACTIVE
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Product details

Number of channels 1 Rating Automotive Operating voltage (max) (V) 18 Operating voltage (min) (V) 8 Ron (typ) (mΩ) 8 Imax (A) 10 Current limit (max) (A) 80 Current limit (min) (A) 20 Current limit type Adjustable FET Internal Features Current sense output, Current sense/monitor, Programmable current limit, Thermal shutdown, Under voltage lock out TI functional safety category Functional Safety-Capable Current sense accuracy +13%/-5% @ 1A Operating temperature range (°C) -40 to 125 Function 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) 18 Operating voltage (min) (V) 8 Ron (typ) (mΩ) 8 Imax (A) 10 Current limit (max) (A) 80 Current limit (min) (A) 20 Current limit type Adjustable FET Internal Features Current sense output, Current sense/monitor, Programmable current limit, Thermal shutdown, Under voltage lock out TI functional safety category Functional Safety-Capable Current sense accuracy +13%/-5% @ 1A Operating temperature range (°C) -40 to 125 Function Automotive load dump compatibility, Current monitoring, Inductive load compatibility, Inrush current control, Short circuit protection, Thermal shutdown
HTSSOP (PWP) 16 32 mm² (5 mm × 6.4 mm)
  • Single-channel smart high-side switch with 8mΩ RON (TJ = 25°C)
  • Qualified for automotive applications:
    • AEC Q-100 Qualified
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Withstands 40V load dump
  • Functional Safety-Capable
  • Improve reliability through selectable current limiting
    • Current limit set-point at 20A or 80A
    • Overcurrent response of current clamping or instant shutdown
  • Robust integrated output protection:
    • Integrated thermal protection
    • Protection against short to ground and battery
    • Automatic switch-on during reverse battery
    • Automatic shut off if loss of battery and ground occurs
    • Integrated output clamp to demagnetize inductive loads
    • Configurable fault handling
  • Analog sense output can be configured to accurately measure:
    • Load current
    • Supply voltage
    • Device temperature
  • Provides FLT indication back to MCU
    • Detection of open load and short-to-battery
  • Single-channel smart high-side switch with 8mΩ RON (TJ = 25°C)
  • Qualified for automotive applications:
    • AEC Q-100 Qualified
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Withstands 40V load dump
  • Functional Safety-Capable
  • Improve reliability through selectable current limiting
    • Current limit set-point at 20A or 80A
    • Overcurrent response of current clamping or instant shutdown
  • Robust integrated output protection:
    • Integrated thermal protection
    • Protection against short to ground and battery
    • Automatic switch-on during reverse battery
    • Automatic shut off if loss of battery and ground occurs
    • Integrated output clamp to demagnetize inductive loads
    • Configurable fault handling
  • Analog sense output can be configured to accurately measure:
    • Load current
    • Supply voltage
    • Device temperature
  • Provides FLT indication back to MCU
    • Detection of open load and short-to-battery

The TPS1HA08-Q1 device is a single-channel smart high-side switch intended for use with 12V automotive systems. The device integrates robust protection and diagnostic features to provide output port protection even during harmful events like short circuits. The device protects against faults through a reliable current limit, which, depending on device variant, is available at both 80A and 20A and is configurable to react to an overcurrent event by either instantly turning the switch off or by regulating the output current at the set point. The high current limit option allows for usage in loads that require large transient currents, while the low current limit option provides improved protection for loads that do not require high peak current.

The TPS1HA08-Q1 also provides a high accuracy analog current sense that allows for improved diagnostics when driving varied load profiles. By reporting load current, device temperature, and supply voltage to a system MCU, the device enables predictive maintenance and load diagnostics that lengthen the system lifetime.

The TPS1HA08-Q1 is available in a small 16-pin HTSSOP package which allows for reduced PCB footprint.

The TPS1HA08-Q1 device is a single-channel smart high-side switch intended for use with 12V automotive systems. The device integrates robust protection and diagnostic features to provide output port protection even during harmful events like short circuits. The device protects against faults through a reliable current limit, which, depending on device variant, is available at both 80A and 20A and is configurable to react to an overcurrent event by either instantly turning the switch off or by regulating the output current at the set point. The high current limit option allows for usage in loads that require large transient currents, while the low current limit option provides improved protection for loads that do not require high peak current.

The TPS1HA08-Q1 also provides a high accuracy analog current sense that allows for improved diagnostics when driving varied load profiles. By reporting load current, device temperature, and supply voltage to a system MCU, the device enables predictive maintenance and load diagnostics that lengthen the system lifetime.

The TPS1HA08-Q1 is available in a small 16-pin HTSSOP package which allows for reduced PCB footprint.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS1HA08-Q1 TPS1HA08-Q1 , 40V, 8mΩ Single-Channel Smart High-Side Switch datasheet (Rev. E) PDF | HTML Jun 10, 2026
Application note Basics of High-Side Switches and Controllers PDF | HTML Mar 31, 2026
Functional safety information TPS1HA08-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML Jul 1, 2021
Application note How To Drive Resistive, Inductive, Capacitive, and Lighting Loads (Rev. E) PDF | HTML Mar 9, 2021
Application note Driving PWM Loads with TI High-Side Switches PDF | HTML Mar 2, 2021
Application note Using PSpice Simulator to Model Thermal Behavior in TI’s Smart High-Side Switch PDF | HTML Nov 30, 2020
Application note Fault and Normal Diagnostic Considerations for Smart High Side Switches PDF | HTML Jul 10, 2020
Functional safety information Streamlining Functional Safety Certification in Automotive and Industrial Jun 9, 2020
Application note High Accuracy Current Sense of Smart High Side Switches Nov 1, 2019
E-book 11 Ways to Protect Your Power Path Jul 3, 2019
Application note AEC-Q100-012 Short-Circuit Reliability Test Results for Smart Power Switches (Rev. A) May 6, 2019
Application note Basics of Power Switches (Rev. A) PDF | HTML Apr 26, 2019
Application brief Improved Automotive Short Circuit Reliability With Adjustable Current Limiting (Rev. A) Apr 11, 2019
Application note Adjustable Current Limit of Smart Power Switches (Rev. B) Jan 21, 2019
Application note Reverse battery protection for high side switches Nov 12, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

HSS-MOTHERBOARDEVM — High side switches motherboard

The HSS-MOTHERBOARDEVM evaluation module is designed to evaluate the <50mΩ Ron devices in TI's high side switch portfolio. These devices include TPS1HA08-Q1, TPS2HB08-Q1, TPS2HB16-Q1, TPS2HB35-Q1, and TPS2HB50-Q1. This board does not come populated with the devices, but allows any of the (...)
User guide: PDF | HTML
Supported products & hardware
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Simulation model

TPS1HA08A-Q1 Unencrypted PSpice Transient Model Package (Rev. D)

SLVMC98D.ZIP (60 KB) - PSpice model
Supported products & hardware
Simulation model

TPS1HA08B-Q1 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCK7B.ZIP (61 KB) - PSpice model
Supported products & hardware
Simulation model

TPS1HA08C-Q1 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCK8B.ZIP (123 KB) - PSpice model
Supported products & hardware
Simulation model

TPS1HA08D-Q1 PSpice Transient Model (Rev. C)

SLVMC99C.ZIP (673 KB) - PSpice model
Supported products & hardware
Simulation model

TPS1HA08E-Q1 Unencrypted PSpice Transient Model Package

SLVMDM3.ZIP (130 KB) - PSpice model
Supported products & hardware
Reference design

TIDA-01184 — Smart Power Switch for Seat Heater Reference Design

This reference design showcases the TPS1HA08-Q1 device, which is used to control an automotive seat heater. The system consists of a main board and heating element, which represents the resistive heating component found in automotive seat heaters. This system demonstrates the ability to (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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