TPS42S40Q
Automotive 40-V 100-mΩ 1-Channel High-Side Power Switch
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Overview
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Development Resources
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Application
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Ordering Detail
Overview
The TPS42S40Q is a 100-mΩ single-channel high-side power switch product with AEC-Q100 qualified.
The TPS42S40Q has a wide voltage operating range of 3.5 V to 40 V, with an absolute maximum rating of 45 V. This flexibility makes it suitable for various automotive applications in different conditions.
The TPS42S40Q is equipped with high-precision current sensing capabilities. It offers a current sense accuracy of 3% for loads of 1 A or greater, and 7% for loads of 50 mA or greater. This accurate current sensing enables easy identification of load status and measurement of load current.
The TPS42S40Q integrates full fault detection and device protection to prevent the device damage from open load, overload, over temperature, short-circuit to the battery, short-circuit to ground, reverse battery, loss of ground, loss of power supply and voltage clamp. With all these protection functions, this device is suitable for different resistive, inductive and capacitive loads.
The TPS42S40Q is designed to operate within the ambient temperature range from −40°C to +125°C. Moreover, the TPS42S40Q provides a thermal-enhanced ETSSOP14 package to enable sustained operation despite significant dissipation across the device.
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Status
Preview
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Rating
Automotive
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Minimum Operating voltage (V)
3.5
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Maximum Operating voltage (V)
42
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Channel
1
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Ron (mΩ)
100
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Typical Iq (μA)
500
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Maximum Iq (μA)
4000
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Maximum Output Current (A)
±20%
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Current Limit Type
Adjustable
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Maximum Current Limit (A)
±3%
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Temperature Range (°C)
-40 to +150
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Package
ETSSOP14
Development Resources
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Documentation
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Show FilterHidden FilterDocumentation
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Data Sheet
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Selection Guide
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Newsletter
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Application Note
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Technical Note
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User Guide
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Test Report
- Document Name
- Type
- Language
- Date
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Selection GuideEnglish07/02/2025
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Selection GuideEnglish07/01/2025
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Data SheetEnglish07/15/2025
Automotive 40-V 100-mΩ 1-Channel High-Side Power Switch
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Technical NoteEnglish01/19/2024
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Application
• Automotive Off-Board Load Power Supply
• Automotive Body Control, HVAC
• Automotive Infotainment, Navigation, Telematics
• Automotive ADAS, Surround-View Cameras
• Automotive Power Train, Transmission
• Automotive Cluster, Head Unit, HUD
• Industry Control, Factory Automation
Ordering Detail
| Order Part Number | Buy | Samples | Rating | Feature | Status | 1ku Price | Release Date | Package | Lead time (week) | MSL | Packing | MPQ | CPQ |
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| TPS42S40AQ-TSAR-S | Automotive Grade | / | Production | / | 2025-06-30 | ETSSOP14 | 24 | MSL3 | T&R | 3000 | 15000 | ||
| TPS42S40BQ-TSAR-S | Automotive Grade | / | Production | / | 2025-06-30 | ETSSOP14 | 24 | MSL3 | T&R | 3000 | 15000 |
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