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Product Detailed Parameters
- Description：IC LF INITIAT/IMMOBILIZER 48TQFP
- Series：-
- Mfr：Melexis Technologies NV
- Package：Tape & Reel (TR)
- Function：LF Initiator
- Frequency：110kHz ~ 141.6kHz
- RF Type：-
- Secondary Attributes：Immobilizer
- Mounting Type：Surface Mount
- Package / Case：48-TQFP Exposed Pad
- Supplier Device Package：48-TQFP-EP (7x7)
- Grade：-
- Qualification：-
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Overview
The MLX74190RPF-ABA-000-RE is a Low Frequency (LF) Initiator and Immobilizer integrated circuit manufactured by Melexis Technologies NV. It operates within the frequency range of 110 kHz to 141.6 kHz, designed for automotive security applications. The component is housed in a 48-TQFP-EP package with dimensions of 7x7 mm. This device functions as an LF driver for immobilizer systems, facilitating secure communication between the vehicle and key fobs.
Feature Summary
- Integrates high-power LF driver capabilities for immobilizer systems
- Supports standard LF frequencies for automotive keyless entry
- Designed for robust integration in vehicle security architectures
Applications
- Automotive immobilizer systems
- Keyless entry initiators
- Vehicle security control units
Procurement Notes
Verify component authenticity through authorized Melexis distributors or certified supply chain partners. Confirm package marking matches the 48-TQFP-EP specification. Check for RoHS3 compliance status if required by assembly standards. Ensure storage conditions adhere to moisture sensitivity levels defined in the datasheet to prevent lead frame oxidation before soldering.
Selection Notes
Select this component for applications requiring dedicated LF initiation within the 110-141.6 kHz band. The 48-pin TQFP package suits surface-mount assembly processes. Consider thermal dissipation requirements due to the exposed pad design. Validate compatibility with existing antenna coil designs and microcontroller interfaces for seamless integration into the vehicle's electronic architecture.
Part Context
This part belongs to Melexis' family of automotive security ICs. It complements other transceiver and sensor solutions offered by the manufacturer. The device supports zone detection solutions and smart antenna demonstrators. It serves as a critical link in passive entry and start systems, ensuring reliable signal transmission for vehicle authentication.
Replacement Considerations
Public documentation indicates the MLX74190RPF-ABA-000-SP variant exists but may be obsolete. Verify lifecycle status and last-time buy dates before substitution. No direct cross-referenced substitutes are confirmed in public sources. Evaluate pin-to-pin compatibility and functional equivalence carefully when considering alternative LF initiator ICs from other manufacturers.
