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Infineon Technologies TLV49681TAXBXA1
- Part No.:
- TLV49681TAXBXA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- TO-226-3, TO-92-3 Short Body
- Datasheet:
-
TLV49681TAXBXA1.pdf
- Description:
- MAGNETIC SWITCH TO92S-3-1
- Quantity:
- Payment:
- Shipping:
Inventory:2,146
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Product details
Overview
TLV49681TAXBXA1 from Infineon Technologies is a bipolar Hall effect latch IC designed for precise magnetic position sensing in consumer and industrial systems. It operates from 3.0 V to 26 V, delivers ±1 mT magnetic switching thresholds (BOP/BRP), features open-drain output, and supports -40°C to +125°C ambient operation - enabling reliable rotor position detection in BLDC motor commutation.
For engineers reviewing the TLV49681TAXBXA1 datasheet, TLV49681TAXBXA1 pinout, TLV49681TAXBXA1 application, or TLV49681TAXBXA1 equivalent, key selection criteria include magnetic threshold stability over temperature, unregulated supply tolerance, ESD robustness (±8 kV HBM), and TO92S-3-1 package compatibility with through-hole assembly and index-counting pole-wheel interfaces.
Technical Context
The TLV49681TAXBXA1 integrates a spinning Hall probe with chopper-stabilized amplifier, demodulator, low-pass filter, and comparator with hysteresis - delivering high immunity to thermal drift and mechanical stress. Its bias and compensation circuits actively correct offset errors, ensuring stable BOP and BRP across voltage and temperature.
It uses an internal oscillator and sequencer to control sampling timing, enabling consistent latching behavior independent of external clock sources. The device powers up with defined output state and includes integrated overtemperature and overcurrent protection on the output driver.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 26 V - enables direct connection to unregulated 12 V or 24 V rails without external LDO. |
| Magnetic BOP / BRP | ±1 mT typical - provides precise, repeatable switching for small air-gap pole-wheel or gear-tooth sensing. |
| Output Type | Open-drain N-channel - allows flexible pull-up to any logic rail (e.g., 3.3 V or 5 V) and wired-OR configuration. |
| Operating Temperature | -40°C to +125°C - supports under-hood and appliance environments without derating. |
| Supply Current | 1.6 mA at 5 V - enables low-power continuous monitoring in battery-backed or energy-conscious systems. |
| ESD Robustness | ±8 kV HBM - eliminates need for external TVS diodes in most consumer-grade PCB layouts. |
| Package | TO92S-3-1 - industry-standard through-hole package with lead spacing optimized for manual and wave soldering. |
Pinout & Package
TLV49681TAXBXA1 is housed in the TO92S-3-1 package: a 3-pin, leaded, halogen-free through-hole package with 2.54 mm pin pitch and standardized pin 1 orientation marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Positive supply input - accepts 3.0–26 V; internal regulator powers analog core and protection circuitry. |
| 2 | GND | Analog and power ground reference - must be connected directly to system ground plane for noise immunity. |
| 3 | Q | Open-drain output - sinks current when active; requires external pull-up resistor for logic-level signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Active error compensation | Real-time offset correction via spinning Hall and chopper stabilization - maintains <±0.2 mT threshold drift over temperature. |
| Overtemperature protection | Thermal shutdown disables output above 160°C junction - prevents latch malfunction during sustained overload. |
| Unregulated supply operation | Operates across full 3.0–26 V range without external regulation - simplifies power architecture in 12 V/24 V systems. |
| High ESD performance | ±8 kV HBM rating - meets IEC 61000-4-2 Level 4 for contact discharge without external protection components. |
| Leaded TO92S-3-1 package | RoHS-compliant, halogen-free leads with standard through-hole footprint - supports legacy assembly lines and rework. |
Applications
| BLDC Motor Commutation | Pole-Wheel Index Counting |
|---|---|
|
Use Scenario: Detecting rotor magnet polarity in 3-phase brushless DC motors for electronic commutation. IC Role / Device Role / Timing Role: Bipolar latch providing synchronized edge-triggered signals aligned to magnet transitions for precise 6-step sequencing. Use Value: ±1 mT thresholds ensure clean, jitter-free zero-crossing detection even with magnet aging or temperature-induced field weakening. |
Use Scenario: Counting teeth or poles on rotating metal wheels in washing machine drum speed control or HVAC fan tachometry. IC Role / Device Role / Timing Role: Magnetic latch generating one pulse per pole transition - used as index signal for RPM calculation and direction sensing. Use Value: High thermal stability preserves counting accuracy across -40°C to 125°C ambient, eliminating recalibration in white goods. |
| Door/ Lid Position Sensing | Industrial Valve Position Feedback |
|
Use Scenario: Detecting open/closed state of refrigerator doors, oven lids, or cabinet panels using embedded magnets. IC Role / Device Role / Timing Role: Latching switch holding state until opposite magnetic pole is presented - provides non-volatile position indication without power. Use Value: Open-drain output interfaces directly with microcontroller GPIOs; low 1.6 mA supply current extends battery life in wireless sensor nodes. |
Use Scenario: Monitoring rotary actuator position in pneumatic/hydraulic valves where metal housings limit sensor placement options. IC Role / Device Role / Timing Role: Through-hole Hall latch mounted externally on valve body, detecting magnet rotation via steel housing coupling. Use Value: TO92S-3-1 package withstands vibration and thermal cycling; 26 V max rating accommodates industrial 24 V control rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bipolar Hall latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV49681TAXBXAT | Same die, TO92S-3-1 package, but tape-and-reel packaging (vs. bulk for TLV49681TAXBXA1) | Identical electrical and magnetic specs; differs only in packaging format and reel quantity | Select for automated SMT line compatibility despite through-hole form factor. |
| TLV49682TAXBXA1 | Higher BOP/BRP (±2.5 mT), same package and supply range | Better suited for larger air gaps or weaker magnets; less sensitive to stray fields in noisy environments | Choose when target magnetic field strength exceeds ±1.5 mT or when reduced false-trigger risk is critical. |
Compared with TLV49681TAXBXA1, TLV49681TAXBXAT offers identical performance in automated assembly-ready packaging, while TLV49682TAXBXA1 trades precision for higher magnetic immunity - making the former ideal for volume production and the latter for mechanically challenging mounting conditions.
Availability
TLV49681TAXBXA1 is available at Aetrix Electronics and suitable for BLDC motor commutation, pole-wheel index counting, and door/lid position sensing requiring stable component supply across automotive-qualified temperature ranges and long-lifecycle industrial programs.
Supply support for TLV49681TAXBXA1 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 leadership in Hall-effect sensing and intelligent power switches.
The TLV4968-1T series belongs to Infineon's Sense & Control product line, engineered for high-precision, temperature-stable magnetic position feedback in cost-sensitive consumer and industrial motion-control applications.
FAQ
What is the magnetic field polarity sensitivity of TLV49681TAXBXA1?
The TLV49681TAXBXA1 is a bipolar latch: it turns ON when exposed to a south pole (B > +1 mT) and remains latched until exposed to a north pole (B < –1 mT), at which point it turns OFF and latches in that state. This dual-polarity response enables absolute position tracking without continuous field presence.
Does TLV49681TAXBXA1 require an external pull-up resistor?
Yes - its open-drain Q output requires an external pull-up resistor to a logic-compatible voltage (e.g., 3.3 V or 5 V). Typical values range from 2.2 kΩ to 10 kΩ depending on rise time and bus capacitance; no internal pull-up is provided.
Can TLV49681TAXBXA1 operate directly from a 24 V battery without regulation?
Yes - its 3.0 V to 26 V supply range allows direct connection to nominal 24 V systems, including automotive batteries with load-dump transients up to 26 V. Internal regulation ensures stable core operation across this full range.
Is the TO92S-3-1 package RoHS and halogen-free compliant?
Yes - the TO92S-3-1 package used for TLV49681TAXBXA1 is leaded and halogen-free per IEC 61249-2-21, meeting RoHS Directive 2011/65/EU requirements. Note: only the package leads are halogen-free; internal die materials follow standard semiconductor process specifications.
TLV49681TAXBXA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Short Body
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Latch, Bipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 2.3mT Trip, -2.3mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 3V ~ 26V
- Current - Supply (Max):
- 2.5mA
- Current - Output (Max):
- 25mA
- Output Type:
- Open Collector
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92S
TLV49681TAXBXA1 FAQ
1.How can I place an order for TLV49681TAXBXA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV49681TAXBXA1 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 TLV49681TAXBXA1 reliable?
The price and inventory of TLV49681TAXBXA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV49681TAXBXA1 is usually 5 days.
3.What payment methods are accepted for TLV49681TAXBXA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV49681TAXBXA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV49681TAXBXA1?
TLV49681TAXBXA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV49681TAXBXA1 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 TLV49681TAXBXA1?
For technical support, including TLV49681TAXBXA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV49681TAXBXA1 requirements.
6.How does Aetrix verify that TLV49681TAXBXA1 is sourced from the original manufacturer or authorized distributors?
All TLV49681TAXBXA1 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 TLV49681TAXBXA1 meets industry standards.
7.What is the process for return or replacement of TLV49681TAXBXA1?
All TLV49681TAXBXA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV49681TAXBXA1, 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 TLV49681TAXBXA1 part is unused and in its original packaging.
Return procedure for TLV49681TAXBXA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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