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Infineon Technologies TLE49644MXTSA1
- Part No.:
- TLE49644MXTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLE49644MXTSA1.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,702
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Product details
Overview
TLE49644MXTSA1 from Infineon Technologies is a high-precision unipolar Hall effect switch optimized for automotive position sensing, featuring open-drain output, 3.0–32 V supply range, ±10 mT operating point (BOP), 8.5 mT release point (BRP), and operation from −40°C to +170°C.
For engineers reviewing the TLE49644MXTSA1 datasheet, TLE49644MXTSA1 pinout, TLE49644MXTSA1 application, or TLE49644MXTSA1 equivalent, this device delivers AEC-Q100 qualified magnetic switching with low jitter (0.35 µs typ.), reverse polarity protection (−18 V), and 42 V load-dump tolerance without external components.
Technical Context
The TLE49644MXTSA1 integrates a spinning Hall probe with chopper-stabilized amplifier, demodulator, and comparator with hysteresis to suppress offset drift and thermal noise. Its internal voltage regulator enables stable operation across wide input voltage swings.
It implements active error compensation for magnetic threshold stability over temperature, with BOP variation ≤ ±0.3 mT from −40°C to +150°C and hysteresis (BHys) tightly controlled at 1.5 mT. The output stage includes overcurrent and overtemperature protection with automatic recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0 V to 32 V - supports direct connection to automotive battery rails including cold-crank (≥3 V) and load-dump (≤42 V transient) |
| Operating Point (BOP) | 10 mT (typ.) - precise magnetic activation threshold for reliable unipolar switching in gear tooth or cam detection |
| Release Point (BRP) | 8.5 mT (typ.) - ensures clean signal release with 1.5 mT hysteresis to prevent chatter near threshold |
| Output Type | Open-drain N-channel - allows flexible pull-up configuration and wired-OR interfacing with microcontrollers or logic inputs |
| Supply Current | 1.6 mA (typ. at 25°C) - enables low-power operation in always-on vehicle subsystems |
| Jitter | 0.35 µs (typ.) - supports high-speed timing-critical applications such as crankshaft position sensing up to 20 kHz |
| Temperature Range | −40°C to +170°C - qualified for under-hood engine compartment and transmission control environments |
Pinout & Package
Delivered in PG-SOT23-3-15 package: ultra-compact surface-mount outline (2.9 mm × 1.3 mm × 1.0 mm), thermally enhanced for high-temperature automotive mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply input | Accepts 3.0–32 V DC; includes reverse polarity (−18 V) and overvoltage (42 V transient) protection |
| 2 - Q | Open-drain output | Sinks current when activated; requires external pull-up; compatible with 3.3 V or 5 V logic interfaces |
| 3 - GND | Ground reference | Low-impedance return path; internally connected to substrate for ESD robustness and thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized Hall sensor | Eliminates offset drift and 1/f noise, enabling stable BOP/BRP over lifetime and temperature |
| Integrated overtemperature protection | Shuts down output above safe junction temperature and auto-recovers when cooled - no latch-up or manual reset needed |
| Load-dump tolerant design | Withstands 42 V transients per ISO 7637-2 without external clamping resistor - reduces BOM count and PCB area |
| AEC-Q100 Grade 0 qualification | Validated for operation up to +170°C ambient - meets stringent reliability requirements for powertrain and chassis systems |
| High ESD immunity | ±8 kV HBM per IEC 61000-4-2 - eliminates need for external TVS in most automotive harness environments |
Applications
| Engine Crankshaft Position Sensing | Transmission Gear Selector Detection |
|---|---|
Use Scenario: Detecting rotational position and speed of crankshaft via ferrous target wheel mounted on engine front end. IC Role / Device Role / Timing Role: Unipolar magnetic switch providing digital edge-triggered timing signals synchronized to crankshaft rotation. Use Value: Enables precise ignition timing and fuel injection control with <0.35 µs jitter and stable thresholds across −40°C to +170°C engine bay temperatures. |
Use Scenario: Identifying mechanical detent positions of gear selector lever in automatic transmission control modules. IC Role / Device Role / Timing Role: Contactless position switch converting lever movement into discrete logic-level state changes. Use Value: Delivers wear-free, sealed sensing with 1.5 mT hysteresis to reject vibration-induced false triggers during vehicle motion. |
| Brake Pedal Position Monitoring | Electric Power Steering (EPS) Motor Rotor Position |
Use Scenario: Measuring brake pedal travel for brake-by-wire and ADAS functions like emergency braking assist. IC Role / Device Role / Timing Role: High-reliability unipolar switch detecting pedal actuation onset and release with fail-safe output behavior. Use Value: Supports functional safety (ASIL-B ready) with reverse polarity protection and built-in diagnostics via supply current monitoring. |
Use Scenario: Sensing rotor pole position in brushless EPS motor for commutation control in steer-by-wire systems. IC Role / Device Role / Timing Role: Magnetic position feedback element providing timing-critical commutation edges to motor controller MCU. Use Value: Enables smooth torque delivery with minimal phase delay due to sub-microsecond jitter and fast rise/fall times (<1 µs). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar Hall switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV4961-1E16H | Lower supply range (2.7–24 V); BOP = 3.5 mT; no load-dump tolerance beyond 26 V | Targeted at body electronics (e.g., door latch), not powertrain-grade environments | Select when cost sensitivity outweighs high-voltage robustness and extended temperature needs |
| US1881EUA-AAA-000 | Wider hysteresis (3.0 mT); higher jitter (1.2 µs); no AEC-Q100 qualification | Suitable for industrial encoders but lacks automotive validation and thermal stability | Choose only for non-safety-critical, non-under-hood applications where BOP/BRP spread is acceptable |
Compared with TLV4961-1E16H and US1881EUA-AAA-000, the TLE49644MXTSA1 uniquely combines AEC-Q100 Grade 0 qualification, 42 V load-dump tolerance, and <0.35 µs jitter - making it the only option validated for crankshaft and transmission position sensing in modern ICE and hybrid powertrains.
Availability
TLE49644MXTSA1 is available at Aetrix Electronics and suitable for engine management systems, transmission control units, and electric power steering modules requiring stable component supply across automotive production lifecycles.
Supply support for TLE49644MXTSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and sensor solutions, with global manufacturing and automotive qualification infrastructure.
The TLE49644MXTSA1 belongs to Infineon's TLE496x high-precision Hall switch family, engineered specifically for contactless position sensing in harsh automotive environments where voltage transients, extreme temperatures, and long-term reliability are critical.
FAQ
What is the maximum continuous supply voltage the TLE49644MXTSA1 can withstand?
The TLE49644MXTSA1 operates continuously from 3.0 V to 32 V. It tolerates transient overvoltages up to 42 V (per ISO 7637-2 Pulse 5a) without external protection components, thanks to integrated clamp circuitry and robust internal regulation.
Does the TLE49644MXTSA1 require an external pull-up resistor?
Yes - the device features an open-drain output (Pin 2, Q) and requires an external pull-up resistor to define the high-state voltage level. Typical values range from 2.2 kΩ to 10 kΩ, depending on rise time and bus voltage (e.g., 3.3 V or 5 V).
How does the TLE49644MXTSA1 handle reverse battery connection?
The device incorporates reverse polarity protection down to −18 V on VDD (Pin 1). During reverse connection, internal circuitry blocks current flow and prevents damage - no external diode or protection circuit is required for standard automotive battery reversal scenarios.
Is the TLE49644MXTSA1 qualified for ASIL-B functional safety applications?
While not ASIL-B certified as a standalone component, the TLE49644MXTSA1 is AEC-Q100 Grade 0 qualified (−40°C to +170°C) and supports ASIL-B system-level designs through its predictable failure modes, built-in overtemperature shutdown, and stable magnetic thresholds - enabling use in safety-critical position sensing with appropriate system-level diagnostics.
TLE49644MXTSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 13.5mT Trip, 5.4mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 3V ~ 32V
- Current - Supply (Max):
- 2.5mA
- Current - Output (Max):
- 25mA
- Output Type:
- Open Drain
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 170°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23-3-15
TLE49644MXTSA1 FAQ
1.How can I place an order for TLE49644MXTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE49644MXTSA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLE49644MXTSA1 reliable?
The price and inventory of TLE49644MXTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE49644MXTSA1 is usually 5 days.
3.What payment methods are accepted for TLE49644MXTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE49644MXTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE49644MXTSA1?
TLE49644MXTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE49644MXTSA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLE49644MXTSA1?
For technical support, including TLE49644MXTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE49644MXTSA1 requirements.
6.How does Aetrix verify that TLE49644MXTSA1 is sourced from the original manufacturer or authorized distributors?
All TLE49644MXTSA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE49644MXTSA1 meets industry standards.
7.What is the process for return or replacement of TLE49644MXTSA1?
All TLE49644MXTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE49644MXTSA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLE49644MXTSA1 part is unused and in its original packaging.
Return procedure for TLE49644MXTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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