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Infineon Technologies TLE49643MXTSA1
- Part No.:
- TLE49643MXTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLE49643MXTSA1.pdf
- Description:
- MAG SWITCH UNIPOLAR SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:20,265
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Product details
Overview
TLE49643MXTSA1 from Infineon Technologies is a high-precision unipolar Hall effect switch optimized for automotive position sensing, featuring 3.0 V to 32 V supply operation, ±18 V reverse polarity protection, and AEC-Q100 qualification. It delivers BOP = 12.5 mT, BRP = 9.5 mT, 3.0 mT hysteresis, open-drain output, and operates across –40°C to +170°C.
For engineers reviewing the TLE49643MXTSA1 datasheet, TLE49643MXTSA1 pinout, TLE49643MXTSA1 application, or TLE49643MXTSA1 equivalent, key selection criteria include magnetic threshold stability over temperature, load-dump resilience (42 V overvoltage capability), ESD robustness (HBM ≥ 2 kV), and SOT23-3 footprint compatibility in space-constrained engine bay modules.
Technical Context
The TLE49643MXTSA1 integrates a spinning Hall probe with chopper-stabilized amplifier, low-pass filtering, and comparator with hysteresis to suppress noise and ensure precise switching at defined magnetic thresholds. Its internal voltage regulator enables stable operation across wide input voltage swings without external components.
It features active error compensation for thermal drift mitigation, overtemperature and overcurrent protection circuitry, and a sequenced startup behavior that avoids false triggering during power-on. The device uses an open-drain output stage capable of sinking ≥20 mA while maintaining <0.4 V saturation voltage at 20 mA and 25°C.
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 Temperature | –40°C to +170°C - qualified for under-hood engine control and transmission position sensing |
| Magnetic Operating Point (BOP) | 12.5 mT (typ.) - precise unipolar activation threshold for gear tooth or camshaft position detection |
| Hysteresis (BHYS) | 3.0 mT - prevents chatter near switching point in noisy magnetic environments |
| Output Type | Open-drain N-channel - enables flexible pull-up configuration and wired-OR interfacing with microcontrollers |
| Jitter (tJIT) | 0.35 µs (typ.) - ensures deterministic timing for high-speed rotational sensing up to ~10 kHz |
| ESD Robustness (HBM) | ≥2 kV - meets automotive system-level ESD immunity requirements without external protection |
Pinout & Package
Package: PG-SOT23-3-15 - compact surface-mount package with 1.45 mm × 0.65 mm body, 0.95 mm height, and standard SOT23 footprint compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply input | Accepts 3.0–32 V DC; includes internal regulator and reverse-polarity protection (–18 V tolerant) |
| 2 - Q | Open-drain output | Sinks current when activated; requires external pull-up; supports 20 mA sink capability with <0.4 V VOL |
| 3 - GND | Ground reference | Return path for supply and output current; tied internally to substrate and sensitive area center |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range with overvoltage tolerance | Operates from 3.0 V to 32 V; withstands 42 V transients without external resistor - eliminates need for TVS or Zener clamping in load-dump scenarios |
| Thermally stable magnetic thresholds | BOP drift ≤ ±0.025 mT/°C - enables accurate position detection across full –40°C to +170°C range without calibration |
| Low-jitter digital output | 0.35 µs typical jitter - supports reliable edge timing in high-RPM crankshaft or camshaft sensing applications |
| Integrated protection functions | Reverse polarity (–18 V), overtemperature shutdown, and output overcurrent limiting - reduces external component count and improves system reliability |
| Chopper-stabilized Hall sensing | Spinning Hall probe + chopper modulation - cancels offset drift and 1/f noise, enabling stable DC magnetic field detection |
Applications
| Engine Speed Sensing | Transmission Gear Position |
|---|---|
|
Use Scenario: Detecting rotation of crankshaft or camshaft using ferrous target wheel in ICE powertrain systems. IC Role / Device Role / Timing Role: Unipolar Hall switch providing synchronized digital pulse train to ECU for RPM and phase calculation. Use Value: Stable BOP/BRP over temperature ensures consistent timing accuracy across cold start to full-load operating conditions. |
Use Scenario: Identifying gear selection state via stationary ferrous flag in automatic transmission valve body. IC Role / Device Role / Timing Role: Static position detector generating logic-high/low signal indicating mechanical gear engagement. Use Value: 3.0 mT hysteresis prevents false toggling due to mechanical vibration or magnetic field ripple near threshold. |
| Brake Pedal Position | Electric Power Steering (EPS) Motor Commutation |
|
Use Scenario: Monitoring brake pedal travel for brake-by-wire and regenerative braking coordination. IC Role / Device Role / Timing Role: Safety-relevant position switch confirming pedal actuation state to ADAS controller. Use Value: AEC-Q100 qualification and –40°C to +170°C operation ensure functional safety compliance in harsh cabin environments. |
Use Scenario: Rotor position feedback for BLDC motor commutation in EPS assist motors. IC Role / Device Role / Timing Role: High-speed unipolar switch delivering timing edges to motor gate driver IC. Use Value: 0.35 µs jitter and fast rise/fall times (<1 µs) enable precise 120° commutation timing at motor speeds >8,000 RPM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar Hall switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Melexis US1881EUA-ABA-002-RE | Lower supply range (3.5–24 V); no 42 V overvoltage tolerance; BOP = 10 mT, BRP = 7 mT | Lacks load-dump resilience; limited to 150°C max ambient - unsuitable for under-hood engine bay mounting | Select only for cost-sensitive non-engine-bay applications where supply regulation is guaranteed |
| Allegro A1120ELHLT-T | Wider hysteresis (6 mT); higher jitter (1.5 µs); no reverse polarity protection; rated to 150°C | Higher hysteresis increases positional dead zone; reduced timing fidelity limits use in high-RPM sensing | Preferable only where magnetic field variation is extreme and timing precision is secondary to noise immunity |
Compared with US1881EUA-ABA-002-RE and A1120ELHLT-T, the TLE49643MXTSA1 offers superior thermal stability, lower jitter, integrated reverse-polarity and overvoltage protection, and full AEC-Q100 qualification - making it the only choice for demanding engine-critical position sensing.
Availability
TLE49643MXTSA1 is available at Aetrix Electronics and suitable for engine speed sensing, transmission gear position detection, brake pedal monitoring, and electric power steering motor commutation requiring stable component supply across automotive production lifecycles.
Supply support for TLE49643MXTSA1 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 TLE49643MXTSA1 belongs to Infineon's TLE496x high-precision Hall switch family, engineered specifically for automotive position sensing where thermal stability, supply resilience, and functional safety compliance are mandatory.
FAQ
What is the maximum continuous supply voltage the TLE49643MXTSA1 can withstand?
The TLE49643MXTSA1 operates continuously from 3.0 V to 32 V. It withstands transient overvoltage events up to 42 V (e.g., ISO 7637-2 Load Dump Pulse 5a) without external protection components, thanks to its integrated overvoltage clamp circuitry.
Does the TLE49643MXTSA1 require an external pull-up resistor on the Q output?
Yes - the Q pin is an open-drain N-channel output and requires an external pull-up resistor to VDD or another logic rail. Typical values range from 2.2 kΩ to 10 kΩ depending on rise time and bus capacitance; no internal pull-up is present.
How does the TLE49643MXTSA1 achieve low magnetic threshold drift over temperature?
It employs active error compensation via on-chip temperature-sensing and dynamic bias adjustment, combined with a spinning Hall probe architecture that cancels offset drift. This yields BOP drift of ≤ ±0.025 mT/°C across –40°C to +170°C.
Is the TLE49643MXTSA1 pin-compatible with earlier TLE496x variants like TLE4964-2M?
No - while all TLE496x devices use PG-SOT23-3-15, magnetic thresholds differ: TLE4964-2M has BOP = 8.5 mT and BRP = 5.5 mT. Electrical pinout is identical, but magnetic response is not interchangeable without system-level recalibration.
TLE49643MXTSA1 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:
- 16.6mT Trip, 6.1mT 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
TLE49643MXTSA1 FAQ
1.How can I place an order for TLE49643MXTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE49643MXTSA1 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 TLE49643MXTSA1 reliable?
The price and inventory of TLE49643MXTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE49643MXTSA1 is usually 5 days.
3.What payment methods are accepted for TLE49643MXTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE49643MXTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE49643MXTSA1?
TLE49643MXTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE49643MXTSA1 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 TLE49643MXTSA1?
For technical support, including TLE49643MXTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE49643MXTSA1 requirements.
6.How does Aetrix verify that TLE49643MXTSA1 is sourced from the original manufacturer or authorized distributors?
All TLE49643MXTSA1 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 TLE49643MXTSA1 meets industry standards.
7.What is the process for return or replacement of TLE49643MXTSA1?
All TLE49643MXTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE49643MXTSA1, 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 TLE49643MXTSA1 part is unused and in its original packaging.
Return procedure for TLE49643MXTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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