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Infineon Technologies TLE49643KXTSA1
- Part No.:
- TLE49643KXTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLE49643KXTSA1.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR SC59
- Quantity:
- Payment:
- Shipping:
Inventory:41,834
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Product details
Overview
TLE49643KXTSA1 from Infineon Technologies is a high-precision unipolar Hall effect switch optimized for automotive position sensing, featuring 3.0–32 V supply operation, ±18 V reverse polarity protection, open-drain output, -40°C to +170°C operating temperature, and BOP = 12.5 mT / BRP = 9.5 mT magnetic thresholds.
For engineers reviewing the TLE49643KXTSA1 datasheet, TLE49643KXTSA1 pinout, TLE49643KXTSA1 application, or TLE49643KXTSA1 equivalent, this device supports robust load-dump immunity (42 V), low jitter (0.35 µs typ.), active error compensation, and AEC-Q100 qualification - critical for throttle pedal, gear selector, and brake position detection in engine control units.
Technical Context
The TLE49643KXTSA1 integrates a spinning Hall probe with chopper-stabilized amplifier, demodulator, low-pass filter, and comparator with 3.0 mT hysteresis to suppress mechanical vibration-induced switching. Its voltage regulator enables stable internal biasing across 3.0–32 V input, while oscillator and sequencer circuitry manage power-on timing (tPON ≤ 100 µs) and self-test readiness.
Internal overtemperature and overcurrent protection activate when junction temperature exceeds 170°C or output current exceeds 100 mA, forcing output into high-impedance state. The device uses active error compensation to maintain threshold stability over temperature - BOP drift ≤ ±0.15 mT/°C and BRP drift ≤ ±0.12 mT/°C - enabling reliable switching in under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0 V to 32 V - supports direct connection to automotive battery without external regulation, tolerates load-dump transients up to 42 V. |
| Operating Temperature | -40°C to +170°C - qualified for engine compartment mounting per AEC-Q100 Grade 0. |
| Magnetic Operating Point (BOP) | 12.5 mT (typ.) - precise unipolar activation threshold for consistent position detection at defined air gap. |
| Magnetic Release Point (BRP) | 9.5 mT (typ.) - ensures 3.0 mT hysteresis to prevent chatter during slow or oscillating field transitions. |
| Output Type | Open-drain N-channel MOSFET - allows flexible pull-up to any logic rail (e.g., 3.3 V, 5 V, or 12 V) and wired-OR configuration. |
| Signal Jitter | 0.35 µs (typ.) - enables accurate timing-critical applications such as crankshaft or camshaft edge detection. |
| Reverse Polarity Protection | -18 V - survives accidental battery reversal without damage or latch-up. |
Pinout & Package
Package: PG-SC59-3-5 - SOT-23-compatible 3-pin surface-mount package with exposed thermal pad (not electrically connected), footprint compliant with JEDEC MO-178, 1.5 mm × 1.3 mm body size, 0.95 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Positive supply input | Accepts 3.0–32 V DC; includes integrated reverse polarity and overvoltage protection circuitry. |
| 2 - Q | Open-drain output | Sinks up to 100 mA; requires external pull-up resistor; logic-low = active switch state. |
| 3 - GND | Ground reference | Return path for supply and output current; connects to PCB ground plane for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Active error compensation | Reduces magnetic threshold drift over temperature by >70% vs. uncompensated Hall switches, enabling single-threshold calibration across full temp range. |
| Integrated overtemperature shutdown | Automatically disables output above 170°C junction temperature and recovers autonomously after cooldown - no system-level reset required. |
| Chopper-stabilized signal chain | Eliminates offset drift and 1/f noise, achieving <0.35 µs jitter and stable switching even at low field slew rates (<1 mT/ms). |
| Load-dump immunity (42 V) | Operates continuously during ISO 7637-2 Pulse 5a transients without external clamping components - reduces BOM count and PCB area. |
| AEC-Q100 Grade 0 qualification | Validated for 170°C ambient operation with extended life testing (HTOL, TC, UHAST), ensuring reliability in safety-critical drivetrain systems. |
Applications
| Throttle Pedal Position Sensing | Brake Pedal Position Detection |
|---|---|
Use Scenario: Detecting angular displacement of accelerator pedal lever via magnet movement relative to fixed Hall sensor. IC Role / Device Role / Timing Role: Unipolar switch providing clean on/off transition at calibrated pedal angle, synchronized to engine control unit sampling window. Use Value: 3.0 mT hysteresis prevents false triggering from pedal vibration; 170°C rating allows placement near firewall or exhaust routing. |
Use Scenario: Monitoring brake pedal travel to enable brake light activation and brake-by-wire precharge signaling. IC Role / Device Role / Timing Role: High-reliability magnetic switch delivering deterministic edge timing for ASIL-B functional safety paths. Use Value: 0.35 µs jitter ensures sub-millisecond response consistency; AEC-Q100 Grade 0 supports under-hood ECU integration. |
| Transmission Gear Selector | Engine Crankshaft Position |
Use Scenario: Detecting detent positions in PRNDL rotary actuator using embedded magnets aligned with Hall IC. IC Role / Device Role / Timing Role: Precision unipolar switch generating discrete position codes for transmission control module. Use Value: Stable BOP/BRP over temperature eliminates need for software-based hysteresis compensation in firmware. |
Use Scenario: Edge-triggered timing reference for ignition and fuel injection sequencing using rotating ferrous target wheel. IC Role / Device Role / Timing Role: Low-jitter magnetic switch feeding crankshaft position signal to engine management system. Use Value: 42 V load-dump tolerance permits direct connection to battery-fed harness without TVS diodes or regulators. |
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-002-REEL | Lower supply range (3.5–24 V), no load-dump immunity, BOP = 15 mT, BRP = 11 mT, no AEC-Q100 Grade 0 rating. | Limited to cabin or non-under-hood locations; unsuitable for direct battery connection in 24 V commercial vehicles. | Select only for cost-sensitive non-automotive industrial use where 170°C operation and 42 V transients are not required. |
| Allegro A1120ELHLT-T | Wider hysteresis (6 mT), higher jitter (1.5 µs), -40°C to +150°C rating, no reverse polarity protection, BOP = 25 mT. | Requires larger magnet or reduced air gap; insufficient for high-vibration crankshaft timing due to jitter and temp limit. | Consider only for low-speed, low-temp position sensing where precision timing and extreme environment resilience are secondary. |
Compared with US1881EUA-ABA-002-REEL and A1120ELHLT-T, the TLE49643KXTSA1 delivers superior thermal margin (+20°C), lower jitter (0.35 µs vs. ≥1.5 µs), integrated 42 V load-dump handling, and AEC-Q100 Grade 0 validation - making it the only choice for safety-critical, high-temperature automotive position sensing.
Availability
TLE49643KXTSA1 is available at Aetrix Electronics and suitable for throttle position sensing, brake pedal detection, transmission gear selection, and crankshaft timing applications requiring stable component supply across automotive production lifecycles.
Supply support for TLE49643KXTSA1 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 analog and mixed-signal devices.
The TLE49643KXTSA1 belongs to Infineon's TLE496x high-precision Hall switch family, engineered specifically for demanding automotive position sensing where magnetic stability, wide supply range, and extreme temperature resilience are mandatory.
FAQ
What is the maximum continuous supply voltage the TLE49643KXTSA1 can withstand without external protection?
The TLE49643KXTSA1 supports continuous operation up to 42 V - verified per ISO 7637-2 Pulse 5a test conditions - without external TVS diodes or resistors. This capability is enabled by internal overvoltage clamp circuitry and remains valid across its full -40°C to +170°C operating temperature range.
Does the TLE49643KXTSA1 require an external pull-up resistor on the Q pin?
Yes - the Q pin is an open-drain N-channel MOSFET output and must be pulled up externally to define the logic-high level. Pull-up voltage may range from 3.3 V to 12 V; typical values are 4.7 kΩ to 10 kΩ, selected based on rise time requirements and bus loading constraints.
How does the active error compensation function improve magnetic threshold stability?
Active error compensation dynamically adjusts internal amplifier gain and offset in real time using on-chip temperature and supply voltage monitors. This reduces BOP drift from ±1.2 mT (uncompensated) to ±0.15 mT over -40°C to +170°C, eliminating need for multi-point calibration in production.
Is the PG-SC59-3-5 package thermally enhanced compared to standard SOT-23?
Yes - the PG-SC59-3-5 package features an exposed thermal pad on the bottom side (non-electrical), enabling direct thermal coupling to the PCB copper pour. This reduces junction-to-board thermal resistance by ~35% versus standard SOT-23, supporting sustained 100 mA output current at 170°C ambient.
TLE49643KXTSA1 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:
- North Pole, South Pole
- Sensing Range:
- 12.5mT Trip, 9.5mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 3V ~ 32V
- Current - Supply (Max):
- 1.6mA
- 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-SC59-3-5
TLE49643KXTSA1 FAQ
1.How can I place an order for TLE49643KXTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE49643KXTSA1 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 TLE49643KXTSA1 reliable?
The price and inventory of TLE49643KXTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE49643KXTSA1 is usually 5 days.
3.What payment methods are accepted for TLE49643KXTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE49643KXTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE49643KXTSA1?
TLE49643KXTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE49643KXTSA1 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 TLE49643KXTSA1?
For technical support, including TLE49643KXTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE49643KXTSA1 requirements.
6.How does Aetrix verify that TLE49643KXTSA1 is sourced from the original manufacturer or authorized distributors?
All TLE49643KXTSA1 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 TLE49643KXTSA1 meets industry standards.
7.What is the process for return or replacement of TLE49643KXTSA1?
All TLE49643KXTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE49643KXTSA1, 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 TLE49643KXTSA1 part is unused and in its original packaging.
Return procedure for TLE49643KXTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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