Product details


Current limit (Min) (A) 20 Driver configuration High Side Current limit type Selectable HBM ESD (kV) 2000 Current sense accuracy +13%/-5% @ 1A Features Current sense output, Current sense/monitor, Programmable current limit, Thermal shutdown, Under voltage lock out open-in-new Find other High-side switches

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other High-side switches


  • Single-channel smart high-side switch with 8-mΩ 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 40-V load dump
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • Improve reliability through selectable current limiting
    • Current limit set-point at 20 A or 80 A
    • 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

All trademarks are the property of their respective owners.

open-in-new Find other High-side switches


The device is a single-channel smart high-side switch intended for use with 12-V automotive systems. The device integrates robust protection and diagnostic features to ensure 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 80 A and 20 A and can be configured 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 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 is available in a small 16-pin HTSSOP package which allows for reduced PCB footprint.

open-in-new Find other High-side switches

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 15
Type Title Date
* Datasheet TPS1HA08-Q1, 40-V, 8-mΩ Single-Channel Smart High-Side Switch datasheet (Rev. D) Dec. 18, 2019
Application notes How To Drive Resistive, Inductive, Capacitive, and Lighting Loads (Rev. B) Aug. 17, 2020
White papers Streamlining Functional Safety Certification in Automotive and Industrial Jun. 09, 2020
Application notes TPS1HA08-Q1 Functional Safety FIT Rate and Failure Mode Distribution Dec. 16, 2019
Application notes High Accuracy Current Sense of Smart High Side Switches Nov. 01, 2019
White papers 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
Application notes AEC-Q100-012 Short-Circuit Reliability Test Results for Smart Power Switches (Rev. A) May 06, 2019
Application notes Basics of Power Switches (Rev. A) Apr. 26, 2019
Application notes Improved Automotive Short Circuit Reliability With Adjustable Current Limiting (Rev. A) Apr. 11, 2019
Application notes Adjustable Current Limit of Smart Power Switches (Rev. B) Jan. 21, 2019
Application notes Reverse battery protection for high side switches Nov. 12, 2018
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016

Design & development

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

Hardware development

High side switches motherboard
document-generic User guide
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 (...)
  • Single or dual-channel high-side power switch, tested according to AECQ100-12
  • High-accuracy current sense
  • Reverse battery protection with external ground network
  • Short circuit and overvoltage protection
  • Themal shudown and thermal swing self-recovery

Design tools & simulation

SLVMC98C.ZIP (672 KB) - PSpice Model
SLVMC99B.ZIP (129 KB) - PSpice Model
SLVMCK7A.ZIP (129 KB) - PSpice Model
SLVMCK8B.ZIP (123 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

Smart Power Switch for Seat Heater Reference Design
TIDA-01184 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​


Related videos