TPS1HA08-Q1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
TPS1HA08-Q1 is an automotive-grade single-channel smart high-side switch with a 40 V operating voltage rating and 8 mΩ on-resistance. It integrates overcurrent protection, thermal shutdown, and diagnostics in a compact package, targeting automotive body electronics and motor-drive applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- TPS1HA08-Q1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40 V rated single-channel smart high-side switch
- 8 mΩ ultra-low on-resistance for minimal power loss
- Integrated overcurrent and thermal shutdown protection
- Diagnostic feedback output for fault detection
- AEC-Q100 automotive qualification for harsh environments
- Supports inductive load switching with demagnetization clamp
Applications
TPS1HA08-Q1 is designed for automotive body electronics including door modules, seat motor controls, and exterior lighting systems. Its AEC-Q100 qualification and robust fault protection make it suitable for under-hood motor-drive circuits operating in wide temperature environments. It is also applied in 12 V automotive power distribution and relay replacement designs requiring reliable high-side switching.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS1HA08-Q1:
Frequently Asked Questions
What on-resistance does TPS1HA08-Q1 achieve and why does it matter for automotive designs?
TPS1HA08-Q1 achieves an 8 mΩ on-resistance, which minimizes I²R power dissipation and heat generation when switching loads up to several amperes. This low RDS(on) is critical in automotive body modules where thermal budget is limited and efficiency directly affects battery life in 12 V systems.
Which fault-protection features are built into TPS1HA08-Q1 for reliable operation in automotive environments?
The device integrates overcurrent protection, thermal shutdown, and an active voltage clamp for inductive loads. A diagnostic output pin reports fault conditions back to the MCU, ensuring the system can react within microseconds to shorts or overtemperature events while operating across a -40°C to 150°C junction temperature range.
How does TPS1HA08-Q1 compare to a discrete MOSFET plus driver solution in a 12 V automotive application?
Replacing a discrete MOSFET and gate-driver pair with TPS1HA08-Q1 reduces BOM count, PCB area, and design complexity. The integrated 8 mΩ switch handles loads up to the device's current rating while the built-in protection circuits eliminate at least 3 to 5 external components typically required for overcurrent and thermal management in a 40 V automotive rail.
Is TPS1HA08-Q1 suitable for inductive loads such as DC motors or solenoids?
Yes. The integrated demagnetization voltage clamp handles the inductive energy release when switching off DC motors or solenoids, clamping the drain voltage to a safe level above the 40 V supply rail. This removes the need for an external freewheeling diode and protects the switch from voltage spikes exceeding 40 V during fast turn-off transients.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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