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Infineon Technologies TLE49644MXTMA1
- Part No.:
- TLE49644MXTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLE49644MXTMA1.pdf
- Description:
- MAG SWITCH UNIPOLAR SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:951
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Product details
Overview
TLE49644MXTMA1 from Infineon Technologies is a high-precision unipolar Hall effect switch in PG-SOT23-3-15 package, designed for automotive position sensing with 3.0–32 V supply range, ±1.5 mT hysteresis (BHYS), and -40°C to +170°C operating temperature. It delivers open-drain output, 10 mT typical operate point (BOP), and 8.5 mT release point (BRP), enabling robust detection of ferrous targets in engine timing and transmission systems.
For engineers reviewing the TLE49644MXTMA1 datasheet, TLE49644MXTMA1 pinout, TLE49644MXTMA1 application, or TLE49644MXTMA1 equivalent, key selection criteria include magnetic threshold stability over temperature, load-dump tolerance up to 42 V, reverse polarity protection (-18 V), and AEC-Q100 qualification for under-hood deployment.
Technical Context
The TLE49644MXTMA1 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 voltages without external components.
Functional behavior includes active error compensation for offset drift, overtemperature and overcurrent protection on the output stage, and controlled start-up sequence ensuring reliable power-on state. The device operates as a digital magnetic sensor with open-drain output requiring external pull-up, supporting direct interface to microcontrollers or logic inputs.
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 transients (up to 42 V protected) |
| Operating Temperature | -40°C to +170°C - qualified for under-hood engine control units and transmission sensors |
| BOP / BRP | 10 mT / 8.5 mT - precise unipolar switching with 1.5 mT hysteresis prevents chatter near threshold |
| Output Type | Open-drain N-channel MOSFET - allows flexible pull-up configuration and wired-OR interfacing |
| Supply Current | 1.6 mA (typ.) - enables low-power operation in always-on vehicle subsystems |
| Jitter | 0.35 µs (typ.) - ensures deterministic timing for crankshaft/camshaft position decoding |
| ESD Protection | ±4 kV HBM - meets automotive system-level ESD robustness requirements without external protection |
Pinout & Package
Package: PG-SOT23-3-15 - surface-mount plastic package with 1.45 mm × 0.65 mm footprint, optimized for high-temperature reflow and mechanical reliability in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply input | Accepts 3.0–32 V DC; internal regulator derives bias for analog and digital blocks; supports reverse polarity protection to -18 V |
| 2 - Q | Open-drain output | Sinks current when active; requires external pull-up resistor; rated for 20 mA continuous output current with thermal foldback |
| 3 - GND | Ground reference | Common return path for supply and output; tied to substrate for EMC performance and thermal conduction |
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 |
| High-temperature magnetic stability | BOP drift ≤ ±0.02 mT/°C - maintains consistent switching points across full -40°C to +170°C range for critical engine timing applications |
| Integrated protection functions | Reverse polarity (-18 V), overcurrent, and overtemperature shutdown - reduces external component count and improves system-level reliability |
| Low-jitter digital output | 0.35 µs typical jitter - enables accurate crankshaft position sampling at >10,000 RPM without timing ambiguity |
| Chopper-stabilized Hall sensing | Spinning Hall probe + chopper modulation - cancels offset drift and 1/f noise, delivering stable thresholds over life and temperature |
Applications
| Engine Crankshaft Position Sensing | Transmission Gear Position Detection |
|---|---|
|
Use Scenario: Detecting rotational position and speed of crankshaft via toothed wheel mounted on front pulley or flywheel. IC Role / Device Role / Timing Role: Unipolar Hall switch providing digital edge-triggered signal synchronized to crankshaft rotation for ECU ignition and fuel injection timing. Use Value: Stable BOP/BRP ensures consistent zero-crossing detection across temperature and aging; 170°C rating supports placement near exhaust manifolds. |
Use Scenario: Monitoring gear selector lever position in automatic transmissions using ferrous target plates on shift linkage. IC Role / Device Role / Timing Role: Magnetic position switch converting mechanical gear state into discrete logic-level signals for transmission control module (TCM). Use Value: High hysteresis (1.5 mT) prevents false triggering during vibration; open-drain output interfaces directly with 3.3 V or 5 V TCM inputs. |
| Brake Pedal Position Monitoring | Throttle Valve Angle Sensing |
|
Use Scenario: Detecting brake pedal actuation status in electronic brake-by-wire or regenerative braking coordination systems. IC Role / Device Role / Timing Role: Safety-critical unipolar switch confirming pedal depression for brake light activation and torque request validation. Use Value: AEC-Q100 qualification and -40°C to +170°C operation ensure functional safety compliance; reverse polarity protection guards against wiring faults. |
Use Scenario: Measuring throttle plate angle in gasoline direct injection engines using rotating cam with embedded ferrous marker. IC Role / Device Role / Timing Role: Digital position indicator feeding throttle position status to engine control unit for air-fuel ratio and spark timing adjustments. Use Value: Low jitter (0.35 µs) enables sub-degree angular resolution; 32 V supply tolerance accommodates 24 V commercial vehicle platforms. |
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 | Lower supply range (3.5–24 V); no load-dump tolerance beyond 28 V; BOP = 12 mT, BRP = 9 mT | Limited to 12 V passenger car systems; unsuitable for heavy-duty 24 V or load-dump-prone locations | Select when cost sensitivity outweighs extended voltage and temperature requirements |
| NXP TLE4913L | Wider hysteresis (3.0 mT); higher supply current (3.2 mA); same PG-SOT23-3-15 package but lower max temp (+150°C) | Less precise threshold control; reduced thermal margin for under-hood placement near turbochargers or exhaust manifolds | Choose only if higher hysteresis is needed to suppress mechanical bounce in low-speed gear detection |
Compared with US1881EUA-ABA-000-RE and TLE4913L, the TLE49644MXTMA1 offers superior voltage resilience (42 V transient), tighter magnetic threshold stability over temperature, and extended high-temperature operation - making it the preferred choice for demanding engine and transmission position sensing where precision and ruggedness are non-negotiable.
Availability
TLE49644MXTMA1 is available at Aetrix Electronics and suitable for automotive engine control, transmission management, and brake system monitoring requiring stable component supply across extended temperature and voltage conditions.
Supply support for TLE49644MXTMA1 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 leadership in AEC-Q100-qualified devices for safety-critical applications.
The TLE49644MXTMA1 belongs to Infineon's TLE496x high-precision Hall switch family, engineered specifically for automotive position sensing where magnetic accuracy, thermal robustness, and supply resilience are essential.
FAQ
What is the maximum allowable supply voltage transient the TLE49644MXTMA1 can withstand?
The TLE49644MXTMA1 is rated for 42 V transient overvoltage events such as automotive load-dump conditions without requiring external protection circuitry. This capability is verified per ISO 7637-2 Pulse 5a testing and is enabled by integrated overvoltage clamp circuitry within the device's voltage regulator block.
Does the TLE49644MXTMA1 require an external pull-up resistor on the Q output?
Yes - the Q pin is an open-drain N-channel MOSFET output and must be pulled up externally to a valid logic-high voltage (e.g., 3.3 V or 5 V). Typical pull-up 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 TLE49644MXTMA1 achieve low magnetic threshold drift over temperature?
It uses a spinning Hall probe architecture combined with chopper stabilization and active offset compensation circuitry. These techniques cancel first-order temperature-induced offset drift, resulting in BOP drift of ≤ ±0.02 mT/°C across -40°C to +170°C - confirmed in Figure 16 of the datasheet.
Is the TLE49644MXTMA1 pin-compatible with other members of the TLE496x family?
Yes - all TLE496x variants (e.g., TLE4961, TLE4962, TLE4964) share identical PG-SOT23-3-15 pinout (VDD–Q–GND) and footprint. Functional differences lie in magnetic thresholds (BOP/BRP), hysteresis, and output type - allowing drop-in replacement where magnetic sensitivity matches the application.
TLE49644MXTMA1 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
TLE49644MXTMA1 FAQ
1.How can I place an order for TLE49644MXTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE49644MXTMA1 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 TLE49644MXTMA1 reliable?
The price and inventory of TLE49644MXTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE49644MXTMA1 is usually 5 days.
3.What payment methods are accepted for TLE49644MXTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE49644MXTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE49644MXTMA1?
TLE49644MXTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE49644MXTMA1 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 TLE49644MXTMA1?
For technical support, including TLE49644MXTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE49644MXTMA1 requirements.
6.How does Aetrix verify that TLE49644MXTMA1 is sourced from the original manufacturer or authorized distributors?
All TLE49644MXTMA1 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 TLE49644MXTMA1 meets industry standards.
7.What is the process for return or replacement of TLE49644MXTMA1?
All TLE49644MXTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE49644MXTMA1, 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 TLE49644MXTMA1 part is unused and in its original packaging.
Return procedure for TLE49644MXTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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