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Infineon Technologies TLV49644TBXALA1
- Part No.:
- TLV49644TBXALA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- -
- Datasheet:
-
TLV49644TBXALA1.pdf
- Description:
- MAG SWITCH IC HALL EFF 3TO92
- Quantity:
- Payment:
- Shipping:
Inventory:2,848
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Product details
Overview
TLV49644TBXALA1 from Infineon Technologies is a unipolar Hall effect switch optimized for high-precision position detection in consumer-grade systems. It operates from 3.0 V to 26 V, delivers ±0.5 mT magnetic threshold stability over temperature, features open-drain output with overcurrent/overtemperature protection, and uses TO92S-3-2 package for compact through-hole mounting in space-constrained encoders and lid-sensing applications.
For engineers reviewing the TLV49644TBXALA1 datasheet, TLV49644TBXALA1 pinout, TLV49644TBXALA1 application, or TLV49644TBXALA1 equivalent, key selection criteria include magnetic operating point (BOP = 10 mT), release point (BRP = 8.5 mT), hysteresis (1.5 mT), supply voltage range (3–26 V), and open-drain output compatibility with 3.3 V/5 V microcontroller inputs.
Technical Context
The TLV49644TBXALA1 integrates a spinning Hall probe with chopper-stabilized amplifier, demodulator, low-pass filter, and comparator with built-in hysteresis - enabling precise unipolar switching with minimal offset drift. Its voltage regulator and bias compensation circuits maintain stable magnetic thresholds across -40°C to +125°C.
It employs an oscillator-driven sequencer for synchronous signal processing and includes integrated overtemperature and overcurrent protection that disables output during fault conditions without latch-up. The device requires no external components beyond a pull-up resistor, supporting direct interface to MCU GPIOs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 26 V - supports direct connection to unregulated 12 V or 24 V rails without external LDO. |
| Operating Point (BOP) | 10 mT typical - triggers output at precise magnetic field strength for repeatable position sensing. |
| Release Point (BRP) | 8.5 mT typical - ensures clean turn-off with 1.5 mT hysteresis to prevent chatter near threshold. |
| Supply Current | 1.6 mA at 5 V - enables low-power operation in battery-backed or energy-conscious designs. |
| Output Type | Open-drain N-channel - allows flexible pull-up to any logic rail (3.3 V, 5 V) and wired-OR configuration. |
| Temperature Range | -40°C to +125°C - qualified for extended industrial and automotive-adjacent environments. |
| ESD Protection | ±8 kV HBM - eliminates need for external TVS diodes in typical consumer enclosure layouts. |
Pinout & Package
TLV49644TBXALA1 is housed in the TO92S-3-2 package - a leaded, halogen-free, through-hole plastic package with 2.54 mm pin pitch and standardized pin 1 orientation marking. Its compact 4.0 × 3.2 × 1.8 mm footprint supports manual or wave soldering in cost-sensitive consumer assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Positive supply input | Accepts 3.0–26 V DC; internal regulator powers all analog blocks; decoupling capacitor recommended. |
| 2 (GND) | Ground reference | Common return path for supply and output current; must be low-impedance to minimize noise coupling. |
| 3 (Q) | Open-drain output | Sinks up to 20 mA when active; requires external pull-up; logic-low indicates magnetic field presence. |
Key Features
| Feature | Design Value |
|---|---|
| Active error compensation | Chopper-stabilized architecture reduces offset drift to < ±0.5 mT over full temperature range. |
| High ESD performance | ±8 kV HBM rating enables robust operation in handheld and portable devices without added protection. |
| Overcurrent/overtemperature protection | Auto-recovering shutdown prevents latch-up and damage during short-circuit or thermal overload events. |
| Unregulated supply operation | Internal voltage regulation allows direct use on noisy 12 V or 24 V rails without external regulators. |
| Leaded, halogen-free package | TO92S-3-2 meets RoHS and JEDEC J-STD-020 reflow profiles while retaining legacy through-hole compatibility. |
Applications
| Laptop Lid Detection | Smart Appliance Door Sensing |
|---|---|
|
Use Scenario: Detect lid open/close state in clamshell-form factor laptops and tablets. IC Role / Device Role / Timing Role: Unipolar Hall switch providing logic-level output synchronized to magnet proximity. Use Value: 10 mT BOP ensures reliable actuation with small neodymium magnets; 1.5 mT hysteresis prevents false toggling during hinge vibration. |
Use Scenario: Monitor door closure status in washing machines, dishwashers, and microwave ovens. IC Role / Device Role / Timing Role: Magnetic position sensor interfacing directly to appliance MCU via open-drain GPIO. Use Value: 3–26 V supply range accommodates both 5 V control boards and 12 V power modules; -40°C to 125°C rating covers ambient and internal heat exposure. |
| Industrial Encoder Indexing | Consumer IoT Motion Trigger |
|
Use Scenario: Provide index pulse for rotary encoder wheels in motor feedback or position tracking systems. IC Role / Device Role / Timing Role: Precision unipolar switch generating clean, jitter-free edge transitions per magnet passage. Use Value: ±0.5 mT threshold stability over temperature ensures consistent timing accuracy across thermal cycles without recalibration. |
Use Scenario: Activate wake-on-motion in smart home sensors, remote controls, or wearable accessories. IC Role / Device Role / Timing Role: Low-power Hall switch driving interrupt input of ultra-low-power microcontrollers. Use Value: 1.6 mA supply current enables multi-year battery life; open-drain output simplifies level-shifting to sub-1 V logic domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar Hall switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV49644TAXALA1 | TO92S-3-1 package; identical electrical specs but different pin 1 marking and mechanical dimensions. | Requires PCB footprint revision; same magnetic performance and thermal behavior. | Select when legacy TO92S-3-1 layout is fixed and component height tolerance permits. |
| US1881LUA-AB | BOP = 12 mT, BRP = 9.5 mT; no overtemperature protection; 3.3–24 V supply; SOT-23 package. | Higher magnetic thresholds reduce sensitivity margin; surface-mount only; lower thermal robustness. | Choose for cost-sensitive SMT-only designs where tighter magnetic tolerance is acceptable. |
Compared with TLV49644TBXALA1, TLV49644TAXALA1 offers identical functionality in a mechanically distinct through-hole variant, while US1881LUA-AB trades thermal safety and precision for smaller size and lower unit cost - making it suitable only where magnetic field strength is consistently higher and board space is critical.
Availability
TLV49644TBXALA1 is available at Aetrix Electronics and suitable for laptop lid detection, smart appliance door sensing, industrial encoder indexing, and consumer IoT motion trigger applications requiring stable component supply, long-term manufacturability, and automotive-qualified reliability margins.
Supply support for TLV49644TBXALA1 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, sensing, and automotive ICs, with global manufacturing and quality certification to ISO/TS 16949 and AEC-Q200 standards.
TLV49644TBXALA1 belongs to Infineon's TLV496x unipolar Hall switch family, engineered for high-accuracy position sensing in cost-sensitive consumer and industrial systems where magnetic consistency and supply flexibility are critical.
FAQ
What is the magnetic field polarity requirement for TLV49644TBXALA1?
TLV49644TBXALA1 is a unipolar Hall switch that responds only to the south pole of a magnet approaching its sensitive area (defined per Figure 9 in the datasheet). It does not activate with north-pole fields or alternating fields. The magnetic field must be oriented perpendicular to the package top surface, with direction specified relative to the TO92S-3-2 pin 1 marking.
Can TLV49644TBXALA1 drive an LED directly?
No - TLV49644TBXALA1's open-drain output is rated for 20 mA sink current, but its absolute maximum output voltage is limited to VDD. Driving an LED requires a series current-limiting resistor and a separate supply rail referenced to VDD; the device cannot source current or withstand reverse voltage across the LED.
Is external filtering required for reliable operation?
No external RC filter is required due to the integrated low-pass filter and chopper stabilization. However, a 100 nF ceramic capacitor between VDD and GND, placed within 5 mm of the device, is mandatory to suppress supply noise and ensure stable internal regulation under fast-switching loads.
Does TLV49644TBXALA1 support bidirectional rotation sensing?
No - TLV49644TBXALA1 is a unipolar switch and provides only on/off output based on field strength magnitude and polarity. Bidirectional sensing requires a bipolar latch (e.g., TLV4962) or two unipolar switches with orthogonal magnet orientation, neither of which is supported by this device's functional block diagram or timing behavior.
TLV49644TBXALA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Function:
- -
- Technology:
- -
- Polarization:
- -
- Sensing Range:
- -
- Test Condition:
- -
- Voltage - Supply:
- -
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Output Type:
- -
- Features:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- -
- Supplier Device Package:
- -
TLV49644TBXALA1 FAQ
1.How can I place an order for TLV49644TBXALA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV49644TBXALA1 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 TLV49644TBXALA1 reliable?
The price and inventory of TLV49644TBXALA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV49644TBXALA1 is usually 5 days.
3.What payment methods are accepted for TLV49644TBXALA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV49644TBXALA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV49644TBXALA1?
TLV49644TBXALA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV49644TBXALA1 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 TLV49644TBXALA1?
For technical support, including TLV49644TBXALA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV49644TBXALA1 requirements.
6.How does Aetrix verify that TLV49644TBXALA1 is sourced from the original manufacturer or authorized distributors?
All TLV49644TBXALA1 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 TLV49644TBXALA1 meets industry standards.
7.What is the process for return or replacement of TLV49644TBXALA1?
All TLV49644TBXALA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV49644TBXALA1, 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 TLV49644TBXALA1 part is unused and in its original packaging.
Return procedure for TLV49644TBXALA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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