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Infineon Technologies TLE49643MXTMA1
- Part No.:
- TLE49643MXTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLE49643MXTMA1.pdf
- Description:
- MAG SWITCH IC HALL EFF SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:22,248
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Product details
Overview
TLE49643MXTMA1 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 TLE49643MXTMA1 datasheet, TLE49643MXTMA1 pinout, TLE49643MXTMA1 application, or TLE49643MXTMA1 equivalent, key selection criteria include magnetic threshold stability over temperature, load-dump tolerance up to 42 V, integrated overcurrent/overtemperature protection, and SOT23-3 footprint compatibility in space-constrained automotive modules.
Technical Context
The TLE49643MXTMA1 integrates a spinning Hall probe with chopper-stabilized amplification and demodulation to suppress offset drift and enhance magnetic threshold accuracy. Its internal voltage regulator enables stable operation across wide input ranges without external conditioning.
Functional blocks include oscillator-driven sequencing, low-pass filtering, comparator with fixed 3.0 mT hysteresis, and active error compensation that maintains BOP/BRP variation ≤ ±0.5 mT over –40°C to +170°C. Output stage uses open-drain NMOS with current limiting and thermal shutdown.
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 (3.0 V) and load-dump transients (42 V peak, no external resistor required) |
| Operating Point (BOP) | 12.5 mT (typ.) - precise magnetic activation threshold enabling reliable gear tooth or cam lobe detection at defined air gaps |
| Release Point (BRP) | 9.5 mT (typ.) - defines minimum field release level; combined with 3.0 mT hysteresis prevents chatter near switching boundary |
| Output Type | Open-drain NMOS - allows flexible pull-up configuration (e.g., 5 V or 12 V), supports wired-OR logic and shared bus signaling |
| Temperature Range | –40°C to +170°C - qualified for under-hood engine control, transmission, and brake system mounting locations |
| ESD Robustness | ±4 kV HBM - eliminates need for external TVS diodes in typical PCB layouts per ISO 10605 |
| Signal Jitter | 0.35 µs (typ.) - ensures deterministic timing for crankshaft/camshaft position decoding in high-RPM engines |
Pinout & Package
Package: PG-SOT23-3-15 - surface-mount plastic package with 1.45 mm × 0.65 mm body, 0.95 mm max height, and gull-wing leads compatible with standard SMT reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply input | Accepts 3.0–32 V DC; includes reverse polarity protection (–18 V tolerant) and internal regulation for analog core stability |
| 2 - Q | Open-drain output | Sinks up to 50 mA; requires external pull-up; asserts low when B ≥ BOP, releases high when B ≤ BRP |
| 3 - GND | Ground reference | Return path for supply and output current; must be low-impedance to ensure accurate magnetic threshold tracking |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized Hall sensing | Reduces offset drift to < 0.1 mT/°C, enabling stable BOP/BRP across full automotive temperature range |
| Integrated overtemperature protection | Shuts down output above +185°C junction temp and auto-recovers after cooldown - prevents latch-up in overheated enclosures |
| Load-dump survival (42 V) | No external series resistor needed - simplifies BOM and PCB layout while meeting ISO 7637-2 Pulse 5a requirements |
| Active error compensation | Corrects for mechanical stress-induced threshold shifts in molded packages, maintaining ±0.5 mT BOP tolerance over life |
| Low quiescent current | 1.6 mA at 12 V - minimizes parasitic drain on vehicle battery during sleep mode (e.g., door module standby) |
Applications
| Engine Crankshaft Position Sensing | Transmission Gear Selector Detection |
|---|---|
|
Use Scenario: Detecting rotating ferrous target teeth on crankshaft pulley in ICE powertrain systems. IC Role / Device Role / Timing Role: Unipolar Hall switch providing digital edge-triggered timing signal synchronized to crank rotation for ECU ignition/fuel injection timing. Use Value: 0.35 µs jitter and ±0.5 mT BOP stability enable sub-degree crank angle resolution at 8000 RPM, supporting advanced combustion strategies. |
Use Scenario: Monitoring mechanical detent positions of PRNDL lever in automatic transmission control units. IC Role / Device Role / Timing Role: Position state detector converting lever angular position into discrete logic-level outputs for gear validation and shift interlock logic. Use Value: 3.0 mT hysteresis prevents false toggling during vibration; 170°C rating allows placement inside sealed transmission control module housing. |
| Brake Caliper Piston Travel Monitoring | Electric Power Steering (EPS) Motor Rotor Position |
|
Use Scenario: Measuring linear piston displacement in electro-hydraulic brake actuators to verify pad contact and assist pressure modulation. IC Role / Device Role / Timing Role: Analog-domain magnetic threshold comparator generating binary proximity signal indicating piston reach within 0.5 mm of target surface. Use Value: Reverse polarity protection (–18 V) safeguards against wiring reversal during service; 32 V max supply accommodates 24 V commercial vehicle systems. |
Use Scenario: Sensing rotor pole position in brushless EPS motor for commutation control in steer-by-wire architectures. IC Role / Device Role / Timing Role: High-speed unipolar switch feeding hall pattern to motor controller MCU for real-time phase alignment. Use Value: 1.6 mA supply current reduces thermal load in tightly packed EPS ECUs; open-drain output interfaces directly with 3.3 V logic without level shifters. |
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-000-RE | BOP = 15 mT, BRP = 11 mT; no integrated overvoltage protection beyond 24 V; requires external Zener for 42 V load-dump | Limited to 150°C max ambient; not AEC-Q100 grade - suitable for industrial but not safety-critical automotive use | Select if cost-sensitive and operating below 150°C with regulated 12 V supply; avoid where load-dump immunity or AEC-Q100 is mandatory |
| Allegro A1120ELHLT-T | BOP = 25 mT, BRP = 15 mT; higher thresholds reduce sensitivity to stray fields but require larger air gaps or stronger magnets | Rated only to +150°C; lacks reverse polarity protection; no active error compensation - BOP drift > ±1.2 mT over temperature | Choose for non-automotive applications with strong magnetic sources and stable thermal environments; not recommended for under-hood deployment |
Compared with US1881EUA-ABA-000-RE and A1120ELHLT-T, the TLE49643MXTMA1 provides superior thermal stability, integrated 42 V load-dump resilience, and AEC-Q100 compliance - making it the only option qualified for ASIL-B–related crankshaft or transmission position functions.
Availability
TLE49643MXTMA1 is available at Aetrix Electronics and suitable for engine management systems, transmission control units, and brake actuation modules requiring stable component supply across extended temperature and voltage extremes.
Supply support for TLE49643MXTMA1 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, sensor, and automotive ICs, with global manufacturing and automotive qualification infrastructure.
The TLE4964x family targets high-reliability automotive position sensing, designed specifically to replace mechanical switches and lower-precision Hall sensors in safety-critical drivetrain and chassis subsystems.
FAQ
What is the maximum continuous supply voltage the TLE49643MXTMA1 can withstand without damage?
The device supports continuous operation up to 32 V. It survives transient load-dump events up to 42 V for 400 ms per ISO 7637-2 Pulse 5a without external components - verified per datasheet Section 3.2 Absolute Maximum Ratings and Figure 19 test conditions.
Does the TLE49643MXTMA1 require an external pull-up resistor on the Q output?
Yes - the Q pin is an open-drain NMOS output and must be pulled up externally. Typical values are 4.7 kΩ to 5 V or 10 kΩ to 12 V. The datasheet Figure 7 shows basic circuit #1 using only this resistor; no additional biasing or buffering is needed.
How does the TLE49643MXTMA1 handle reverse battery connection?
It tolerates –18 V applied to VDD with respect to GND indefinitely, per Table 3 Absolute Maximum Ratings. Internal protection circuitry blocks reverse current flow, eliminating risk of latch-up or permanent damage during service wiring errors.
Is the magnetic sensitivity of the TLE49643MXTMA1 adjustable via external components?
No - BOP (12.5 mT) and BRP (9.5 mT) are factory-trimmed and fixed. The device contains no sensitivity adjustment pins or programming interface; all magnetic parameters are laser-trimmed during final test and cannot be modified in-circuit.
TLE49643MXTMA1 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:
- Either
- Sensing Range:
- ±5mT Trip, ±4.2mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.7V ~ 32V
- Current - Supply (Max):
- 2.5mA
- Current - Output (Max):
- 2mA
- Output Type:
- Open Drain
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 170°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23-3-15
TLE49643MXTMA1 FAQ
1.How can I place an order for TLE49643MXTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE49643MXTMA1 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 TLE49643MXTMA1 reliable?
The price and inventory of TLE49643MXTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE49643MXTMA1 is usually 5 days.
3.What payment methods are accepted for TLE49643MXTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE49643MXTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE49643MXTMA1?
TLE49643MXTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE49643MXTMA1 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 TLE49643MXTMA1?
For technical support, including TLE49643MXTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE49643MXTMA1 requirements.
6.How does Aetrix verify that TLE49643MXTMA1 is sourced from the original manufacturer or authorized distributors?
All TLE49643MXTMA1 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 TLE49643MXTMA1 meets industry standards.
7.What is the process for return or replacement of TLE49643MXTMA1?
All TLE49643MXTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE49643MXTMA1, 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 TLE49643MXTMA1 part is unused and in its original packaging.
Return procedure for TLE49643MXTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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