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Infineon Technologies TLV4906LHALA1
- Part No.:
- TLV4906LHALA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- 3-SSIP, SSO-3-02
- Datasheet:
-
TLV4906LHALA1.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR SSO-3-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,377
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Product details
Overview
TLV4906LHALA1 from Infineon Technologies is a monolithic Hall-effect latch sensor IC designed for contactless position and speed sensing in automotive and industrial systems. It features bipolar latching operation, 3.5–24 V supply range, ±3.5 mT magnetic operate point (BOP), -3.5 mT release point (BRP), and open-drain output with reverse polarity protection. It is used in BLDC motor commutation, gear tooth sensing, and seatbelt buckle detection.
For engineers reviewing the TLV4906LHALA1 datasheet, TLV4906LHALA1 pinout, TLV4906LHALA1 application, or TLV4906LHALA1 equivalent, key selection criteria include magnetic sensitivity tolerance, supply voltage robustness across cold-crank conditions, output stage drive capability into capacitive loads, and AEC-Q100 Grade 1 qualification for under-hood deployment.
Technical Context
The TLV4906LHALA1 integrates a Hall plate, chopper-stabilized amplifier, Schmitt trigger, and open-drain NMOS output stage on a single silicon die. Its chopper stabilization suppresses offset drift over temperature and supply variation, enabling stable switching thresholds from -40 °C to 150 °C ambient.
It operates in bipolar latch mode: a south pole exceeding BOP turns the output ON (low), and remains latched until a north pole exceeding |BRP| forces it OFF. No internal pull-up is provided - external pull-up is required for logic-level compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.5 V to 24 V - supports direct battery connection including automotive cold-crank (4.5 V min) and load-dump transients (40 V tolerant). |
| Magnetic Operate Point (BOP) | ±3.5 mT typical - enables reliable switching with small ferrite magnets at air gaps up to 2.5 mm in gearbox applications. |
| Magnetic Release Point (BRP) | ∓3.5 mT typical - provides 0 mT hysteresis, ensuring clean edge definition for precise timing in motor commutation. |
| Output Type | Open-drain NMOS - allows wired-OR configuration, level-shifting via external pull-up, and direct interface to 3.3 V/5 V microcontrollers. |
| Operating Temperature | -40 °C to +150 °C - qualified per AEC-Q100 Grade 1, suitable for engine bay, transmission, and EPS module placement. |
| Reverse Polarity Protection | Integrated - withstands -24 V applied to VBB, eliminating need for external series diode in battery-reversed fault scenarios. |
Pinout & Package
TLV4906LHALA1 is housed in a 3-pin SMD package: TO-92-3 (SMD variant), lead-free, RoHS-compliant, with pins arranged as VBB, GND, and OUT (viewed from top, flat side facing up, left-to-right).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBB | Positive supply input | Accepts 3.5–24 V DC; includes reverse-polarity protection and ESD clamping to GND. |
| GND | Ground reference | Return path for supply current and output sink current; must be low-impedance for stable Hall biasing. |
| OUT | Open-drain output | Sinks up to 20 mA; requires external pull-up resistor (e.g., 4.7 kΩ to 5 V or 3.3 V) for logic-high state. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized architecture | Reduces offset drift to < ±0.5 mT over full temperature and voltage range, eliminating manual calibration in production. |
| Bipolar latching behavior | Enables absolute position detection without continuous magnet movement - ideal for rotary encoders and camshaft sensing. |
| Integrated reverse polarity protection | Eliminates discrete protection diode, saving PCB area and BOM cost while maintaining functional safety compliance. |
| AEC-Q100 Grade 1 qualification | Validated for automotive powertrain and chassis applications where junction temperature reaches 165 °C. |
Applications
| BLDC Motor Commutation | Transmission Gear Tooth Sensing |
|---|---|
|
Use Scenario: Detecting rotor position in 3-phase brushless DC motors for electronic control units (ECUs) in HVAC blowers and power steering pumps. IC Role / Device Role / Timing Role: Hall latch providing synchronized digital edge transitions to MCU timer capture inputs for six-step commutation sequencing. Use Value: Enables precise 60° electrical phase alignment with < ±1° timing jitter over lifetime, supporting >15,000-hour MTBF. |
Use Scenario: Monitoring rotational speed and direction of differential gears in automatic transmissions using ferrous gear wheels. IC Role / Device Role / Timing Role: Magnetic zero-crossing detector generating TTL-compatible pulses fed to transmission control module (TCM) for shift scheduling. Use Value: Delivers consistent pulse width and edge rate across oil contamination, vibration (50 g), and temperature extremes (-40 °C to 150 °C). |
| Seatbelt Buckle Detection | Steering Angle Sensor Backup |
|
Use Scenario: Confirming occupant restraint status in vehicle safety systems by detecting metal tongue insertion into retractor housing. IC Role / Device Role / Timing Role: Latching switch signaling "buckled" state to airbag control unit (ACU); maintains state without power cycling. Use Value: Provides fail-safe mechanical redundancy to capacitive or microswitch-based detection, meeting ISO 26262 ASIL-B requirements. |
Use Scenario: Supplementing primary resolver or optical encoder in electric power steering (EPS) with coarse angular feedback during startup or fault conditions. IC Role / Device Role / Timing Role: Coarse position latch indicating quadrant (0°/90°/180°/270°) to assist initialization and fault recovery routines. Use Value: Enables EPS ECU to maintain basic assist functionality even if primary sensor fails, supporting limp-home operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Melexis US1881EUA-ABA-000-RE | Wider BOP/BRP tolerance (±4.0 mT), no reverse polarity protection, 3.3–24 V supply. | Lacks integrated reverse-voltage hardening - requires external diode in battery-connected designs. | Select when cost sensitivity outweighs protection integration and tighter magnetic threshold control is not required. |
| Allegro A1220LUA-T | Unipolar operation (ON with south pole only), 3.8–24 V supply, no chopper stabilization, ±5.5 mT BOP. | Cannot latch - resets when field drops below BRP; unsuitable for static position hold or camshaft indexing. | Choose only for simple proximity detection where latching is unnecessary and thermal drift is mitigated externally. |
Compared with US1881EUA-ABA-000-RE and A1220LUA-T, TLV4906LHALA1 uniquely combines AEC-Q100 Grade 1 qualification, chopper-stabilized precision, reverse polarity hardening, and true bipolar latching - making it the only option qualified for safety-critical, high-reliability automotive position sensing without design compromises.
Availability
TLV4906LHALA1 is available at Aetrix Electronics and suitable for BLDC motor control, transmission speed monitoring, seatbelt occupancy detection, and EPS backup sensing requiring stable component supply across automotive production lifecycles.
Supply support for TLV4906LHALA1 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 global R&D and manufacturing infrastructure.
TLV4906LHALA1 belongs to Infineon's TLE/TLV Hall-effect sensor family, engineered specifically for robust, contactless position and speed sensing in harsh automotive environments - emphasizing reliability, magnetic accuracy, and system-level fault resilience.
FAQ
What is the maximum capacitive load the TLV4906LHALA1 output can drive?
The TLV4906LHALA1 output is rated for 20 mA sink current and has been characterized driving up to 100 pF with < 100 ns rise/fall times using a 4.7 kΩ pull-up to 5 V. For loads exceeding 50 pF, layout must minimize trace inductance and avoid long stubs to prevent ringing or false triggering.
Does TLV4906LHALA1 require an external pull-up resistor?
Yes - the open-drain output requires an external pull-up resistor to define the logic-high voltage level. Typical values are 4.7 kΩ (for 5 V systems) or 2.2 kΩ (for 3.3 V systems). No internal pull-up is present; omission results in undefined HIGH state and system malfunction.
Can TLV4906LHALA1 operate with a 3.3 V supply?
No - the minimum supply voltage is 3.5 V per datasheet specifications. At 3.3 V, internal bandgap reference and Hall bias circuitry fall outside functional specification, resulting in unpredictable BOP/BRP thresholds and possible failure to switch. Use only within 3.5–24 V range.
Is TLV4906LHALA1 pin-compatible with earlier TLV4906 variants?
Yes - TLV4906LHALA1 shares identical pinout, package outline, and electrical behavior with TLV4906KHALA1 and TLV4906LHALA, differing only in tightened magnetic threshold tolerances and enhanced ESD robustness (HBM ≥ 4 kV). Direct replacement is supported without layout change.
TLV4906LHALA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 3-SSIP, SSO-3-02
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 13.9mT Trip, 4.7mT Release
- Test Condition:
- -40°C ~ 85°C
- Voltage - Supply:
- 2.7V ~ 18V
- Current - Supply (Max):
- 6mA
- Current - Output (Max):
- 20mA
- Output Type:
- Open Collector
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-SSO-3-2
TLV4906LHALA1 FAQ
1.How can I place an order for TLV4906LHALA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV4906LHALA1 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 TLV4906LHALA1 reliable?
The price and inventory of TLV4906LHALA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV4906LHALA1 is usually 5 days.
3.What payment methods are accepted for TLV4906LHALA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV4906LHALA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV4906LHALA1?
TLV4906LHALA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV4906LHALA1 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 TLV4906LHALA1?
For technical support, including TLV4906LHALA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV4906LHALA1 requirements.
6.How does Aetrix verify that TLV4906LHALA1 is sourced from the original manufacturer or authorized distributors?
All TLV4906LHALA1 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 TLV4906LHALA1 meets industry standards.
7.What is the process for return or replacement of TLV4906LHALA1?
All TLV4906LHALA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV4906LHALA1, 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 TLV4906LHALA1 part is unused and in its original packaging.
Return procedure for TLV4906LHALA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV4906LHALA1 Tags
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AH1913-W-7
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SM453R
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