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Infineon Technologies TLV49681TBXALA1
- Part No.:
- TLV49681TBXALA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- -
- Datasheet:
-
TLV49681TBXALA1.pdf
- Description:
- MAG SWITCH IC HALL EFF 3TO92
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
TLV49681TBXALA1 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 operate/release thresholds (BOP/BRP), features open-drain output, and supports -40°C to +125°C ambient operation - enabling reliable rotor position detection in BLDC motors and index counting with pole wheels.
For engineers reviewing the TLV49681TBXALA1 datasheet, TLV49681TBXALA1 pinout, TLV49681TBXALA1 application, or TLV49681TBXALA1 equivalent, key selection criteria include magnetic threshold stability over temperature, supply voltage flexibility, ESD robustness (±4 kV HBM), and TO92S-3-2 package compatibility with through-hole assembly and high-reliability mechanical mounting.
Technical Context
The TLV49681TBXALA1 integrates a spinning Hall probe with chopper-stabilized amplifier, demodulator, low-pass filter, and comparator with hysteresis to achieve high magnetic threshold accuracy and immunity to thermal drift. Its internal voltage regulator enables stable operation across wide input voltage range without external regulation.
It implements active error compensation and built-in overtemperature/overcurrent protection, ensuring fail-safe behavior during fault conditions. The device latches output state until opposite polarity magnetic field exceeds BRP, making it suitable for bidirectional rotation sensing and non-volatile position memory in unpowered states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 26 V - supports direct connection to unregulated 12 V/24 V rails without LDO. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood and appliance environments. |
| Magnetic BOP / BRP | ±1 mT typical - enables high-resolution detection with small magnets or large air gaps. |
| Output Type | Open-drain - allows wired-OR configuration and flexible pull-up voltage selection. |
| Supply Current | 1.6 mA at 5 V - low quiescent power ideal for battery-backed or energy-conscious designs. |
| ESD Rating | ±4 kV HBM - meets IEC 61000-4-2 Level 3 for system-level robustness. |
| Package | TO92S-3-2 - axial-leaded, halogen-free, through-hole mount with defined sensitive area centering. |
Pinout & Package
TLV49681TBXALA1 is housed in the TO92S-3-2 package - a three-terminal, axial-leaded, halogen-free plastic package with standardized pin spacing and defined magnetic sensitive area location per Figure 2 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Positive supply input - accepts 3.0–26 V; powers internal regulator and signal chain. |
| 2 | GND | Ground reference - common return path for supply and output current. |
| 3 | Q | Open-drain output - sinks current when active; requires external pull-up for logic HIGH. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized Hall sensing | Eliminates offset drift and enables ±1 mT threshold stability over temperature and lifetime. |
| Integrated overtemperature protection | Shuts down output and recovers automatically - prevents thermal damage in stalled motor or overload scenarios. |
| Unregulated supply operation | Operates directly from 12 V/24 V batteries or rectified AC without pre-regulation - reduces BOM count. |
| High ESD robustness | ±4 kV HBM rating - eliminates need for external TVS diodes in most consumer-grade enclosures. |
Applications
| BLDC Motor Commutation | Pole Wheel Index Counting |
|---|---|
Use Scenario: Detecting rotor magnet polarity in 3-phase brushless DC motors for electronic commutation timing. IC Role / Device Role / Timing Role: Bipolar latch providing synchronized, edge-triggered phase feedback signals to the motor controller. Use Value: Enables precise 60° electrical sector alignment with ±1 mT threshold repeatability, reducing torque ripple and acoustic noise. | Use Scenario: Counting gear teeth or slots on rotating shafts using a ferrous pole wheel and stationary magnet/Hall pair. IC Role / Device Role / Timing Role: Magnetic latch generating clean, debounced digital pulses per tooth transition. Use Value: Delivers deterministic pulse edges with no false triggers due to hysteresis and chopper stabilization - critical for accurate RPM and position tracking. |
| Appliance Door/Open Detection | White Goods Rotor Position Sensing |
Use Scenario: Monitoring lid closure status in washing machines or dishwasher safety interlocks. IC Role / Device Role / Timing Role: Latching switch asserting LOW when magnet approaches, retaining state until removal. Use Value: Eliminates need for continuous polling or external memory - ensures fail-safe door-open detection even after power cycle. | Use Scenario: Determining rotor angular position in compressor or fan motors inside refrigerators and HVAC units. IC Role / Device Role / Timing Role: High-temperature-stable Hall latch delivering commutation signals under thermal stress. Use Value: Maintains ±1 mT BOP/BRP tolerance across -40°C to +125°C - avoids miscommutation during cold start or hot ambient operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bipolar Hall latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV49681TAXALA1 | Same die, TO92S-3-1 package with different lead form and marking; identical electrical specs. | Requires different PCB footprint and reflow profile due to TO92S-3-1 lead pitch and body dimensions. | Select when legacy board layout or bulk packaging is required. |
| Melexis US1881EUA-ABA-000-REEL | ±3.5 mT BOP/BRP, 2.7–24 V supply, 3.5 mA IDD; lacks integrated overtemperature protection. | Suitable for cost-sensitive, lower-precision applications where wider thresholds are acceptable. | Choose only if ±1 mT precision and thermal protection are not required. |
Compared with TLV49681TBXALA1, TLV49681TAXALA1 offers identical performance in a mechanically distinct TO92S-3-1 variant, while US1881EUA trades precision and protection for broader voltage tolerance and higher supply current - making the TLV49681TBXALA1 optimal for thermally demanding, high-accuracy latch applications.
Availability
TLV49681TBXALA1 is available at Aetrix Electronics and suitable for BLDC motor commutation, pole wheel index counting, and appliance door/open detection requiring stable component supply, long-term lifecycle support, and automotive-grade reliability in consumer and industrial settings.
Supply support for TLV49681TBXALA1 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 quality certification to ISO/TS 16949 and AEC-Q200.
The TLV4968x family belongs to Infineon's Sense & Control product line, engineered specifically for high-precision, temperature-stable magnetic switching in motion control, motor feedback, and safety-critical position sensing applications.
FAQ
What is the magnetic sensitive area location for TLV49681TBXALA1?
The magnetic sensitive area is centered 1.27 mm from the package bottom plane and aligned with the geometric centerline between pins 1 and 2, as shown in Figure 2 of the datasheet. This positioning ensures consistent field coupling in TO92S-3-2 mounting configurations and enables repeatable air-gap calibration in mechanical assemblies.
Does TLV49681TBXALA1 require an external pull-up resistor?
Yes - the Q pin is an open-drain output and must be pulled up to a voltage ≤26 V via an external resistor. Typical values range from 4.7 kΩ to 10 kΩ depending on rise time and bus capacitance. No internal pull-up is integrated, preserving design flexibility for mixed-voltage interface logic.
Can TLV49681TBXALA1 operate from a 24 V automotive battery directly?
Yes - its 3.0 V to 26 V supply range accommodates raw 24 V nominal systems, including transient spikes up to 26 V. However, sustained operation above 24 V requires verification of thermal dissipation, and load dump transients beyond 26 V demand external clamping per ISO 7637-2.
How does the overtemperature protection behave during fault conditions?
When junction temperature exceeds ~165°C, the output is forced LOW and remains latched in that state until temperature falls below ~145°C hysteresis threshold. During shutdown, supply current drops to <100 µA, and normal operation resumes automatically without reset or power cycle.
TLV49681TBXALA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Function:
- -
- Technology:
- -
- Polarization:
- -
- Sensing Range:
- -
- Test Condition:
- -
- Voltage - Supply:
- -
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Output Type:
- -
- Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TLV49681TBXALA1 FAQ
1.How can I place an order for TLV49681TBXALA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV49681TBXALA1 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 TLV49681TBXALA1 reliable?
The price and inventory of TLV49681TBXALA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV49681TBXALA1 is usually 5 days.
3.What payment methods are accepted for TLV49681TBXALA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV49681TBXALA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV49681TBXALA1?
TLV49681TBXALA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV49681TBXALA1 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 TLV49681TBXALA1?
For technical support, including TLV49681TBXALA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV49681TBXALA1 requirements.
6.How does Aetrix verify that TLV49681TBXALA1 is sourced from the original manufacturer or authorized distributors?
All TLV49681TBXALA1 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 TLV49681TBXALA1 meets industry standards.
7.What is the process for return or replacement of TLV49681TBXALA1?
All TLV49681TBXALA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV49681TBXALA1, 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 TLV49681TBXALA1 part is unused and in its original packaging.
Return procedure for TLV49681TBXALA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV49681TBXALA1 Tags
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