TJA1128ETK/0Z - LIN Automotive SBC with 85mA LDO | NXP
Teilenummer: TJA1128ETK/0Z ✓ AktivTJA1128ETK/0Z Übersicht
A LIN system basis chip, or SBC, combines several functions normally distributed across an automotive body or networking module. The TJA1128ETK/0Z places the LIN physical-layer transceiver, regulator, supervisory circuitry, wake-up detection, and logic interfaces in one package. This consolidation reduces board area while maintaining a dedicated supply for the attached microcontroller and sensors.
Key features include LIN communication at 20 kBd, two WAKE inputs, one general-purpose input, one high-voltage multipurpose output, and a window watchdog. The regulator offers selectable 3.3 V or 5.0 V output options with up to 85 mA of output current. The part is identified as AEC-Q100 Grade 0 qualified and suitable for applications requiring a 150 °C junction-temperature rating.
The TJA1128 architecture separates communication and power functions within one system basis chip. Its LIN transceiver interfaces the microcontroller to a low-cost, single-wire vehicle network, while the LDO supplies local electronics from the vehicle battery. Wake-up inputs support low-power system activation, and the window watchdog monitors the microcontroller for correct periodic servicing.
Typical uses include LIN-controlled automotive body modules, door and seat electronics, climate-control interfaces, sensor gateways, lighting controllers, and compact vehicle accessory modules. The 14-HVSON package is appropriate for space-constrained designs where a small PCB footprint and integrated power management are important.
When designing a circuit around the TJA1128ETK/0Z, preserve the pinout and decoupling arrangement shown in the manufacturer datasheet, and verify the regulator output variant against the intended microcontroller rail. Place the LIN and regulator return paths to minimize coupling between vehicle-network pulses and sensitive sensor or control circuitry.
This product overview connects the device architecture with practical package, power, watchdog, wake-up, and automotive-qualification considerations. It also organizes selection questions around genuine drop-in alternatives, supply availability, and the distinction between the 3.3 V and 5.0 V regulator configurations.
Drop-in-Alternativen für TJA1128ETK/0Z – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit TJA1128ETK/0Z (gleiche Bauform und Footprint) – abweichend in Automotive Qualification, General-Purpose Inputs, High-Voltage Multipurpose Outputs, Mounting Type, Product Type.
TJA1128GTK/0Z
✅ Drop-InPreis auf Anfrage
Datenblatt ansehen →TJA1128ETK/0Z Technische Daten
| Product Type | LIN mini system basis chip |
| LIN Transceiver Configuration | 1/1 half-duplex LIN transceiver |
| LIN Data Rate | 20 kBd |
| Supply Voltage Range | 5 V to 28 V |
| Regulator Output Options | 3.3 V or 5.0 V |
| Regulator Maximum Output Current | 85 mA |
| WAKE Inputs | 2 inputs |
| General-Purpose Inputs | 1 GPI |
| High-Voltage Multipurpose Outputs | 1 HVMPO |
| Watchdog Type | Window watchdog |
| Gehäuse | 14-HVSON, 3 mm x 4.5 mm |
| Montageart | Surface mount |
| Number of Terminals | 14 terminals |
| Terminal Finish | Nickel, palladium, gold, silver |
| Automotive Qualification | AEC-Q100 Grade 0 |
| Junction Temperature Rating | 150 °C |
| Production Status | Active |
TJA1128ETK/0Z 14-hvson, 3 mm x 4.5 mm Pinbelegungsleitfaden
Pinbelegung für TJA1128ETK/0Z (14-hvson, 3 mm x 4.5 mm-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für TJA1128ETK/0Z.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
TJA1128ETK/0Z ist geeignet für 6 Anwendungs: Automotive LIN Body-Control Module, Vehicle Door and Seat Electronics, Climate-Control LIN Interface, Automotive Lighting Controller, Vehicle Sensor Gateway, Low-Power Accessory Module.
Automotive LIN Body-Control Module
The TJA1128ETK/0Z fits compact body-control modules that connect a microcontroller to a LIN subnet while also requiring regulated local power. Its 20 kBd LIN transceiver handles network communication, while the 3.3 V or 5.0 V LDO provides up to 85 mA to the controller and peripherals. The integrated window watchdog supports reliable firmware supervision, and the 14-HVSON package preserves board area in distributed vehicle electronics.
Empfohlen
Vehicle Door and Seat Electronics
Door, seat, and latch modules often need LIN connectivity, low-power wake-up behavior, and a regulated controller rail in a small PCB area. The TJA1128ETK/0Z provides a 20 kBd LIN transceiver, two WAKE inputs, a 5 V to 28 V operating range, and an LDO output of 3.3 V or 5.0 V. Its 85 mA regulator capacity suits compact sensing and actuator-control electronics without requiring a separate supply IC.
Empfohlen
Climate-Control LIN Interface
The TJA1128ETK/0Z is appropriate for climate-control panels and HVAC modules that connect to LIN-controlled temperature, actuator, or sensor nodes. The integrated LIN transceiver operates at 20 kBd, while the selectable 3.3 V or 5.0 V regulator supplies up to 85 mA for local logic. Two WAKE inputs permit activity detection, and the window watchdog helps identify a microcontroller that stops servicing the module.
Empfohlen
Automotive Lighting Controller
Compact lighting-control nodes benefit from combining a LIN interface with local power supervision. The TJA1128ETK/0Z supplies a 20 kBd transceiver, a 3.3 V or 5.0 V LDO capable of 85 mA, a window watchdog, and a high-voltage multipurpose output for additional control functions. Its 14-HVSON package is useful where the PCB must accommodate several vehicle subsystems around a small controller.
Empfohlen
Vehicle Sensor Gateway
A LIN sensor gateway can use the TJA1128ETK/0Z to combine network communication and regulated controller power in one device. The LIN transceiver operates at 20 kBd, the LDO offers 3.3 V or 5.0 V output with up to 85 mA, and the WAKE inputs permit low-power activation from external vehicle signals. The small 3 mm by 4.5 mm surface-mount package supports dense gateway boards.
Empfohlen
Low-Power Accessory Module
The TJA1128ETK/0Z suits low-power vehicle accessory modules that wake from external network activity and supervise a local controller. Two WAKE inputs detect activation requests, the integrated LDO supplies up to 85 mA at 3.3 V or 5.0 V, and the window watchdog detects missing controller service. Its 5 V to 28 V operating range and AEC-Q100 Grade 0 status align with demanding automotive environments.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für TJA1128ETK/0Z – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | TJA1128GTK/0Z |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Package | 14-HVSON (3 mm x 4.5 mm) | 14-HVSON (3 mm x 4.5 mm) |
| Product Type | LIN mini system basis chip | LIN mini system basis chip |
Wichtigste Unterscheidungsmerkmale
- Integration reduces the need for separate LIN and power-management devices (vs. TJA1128GTK/0Z)
- Local regulated output supports compact controller-centric modules (vs. TJA1128GTK/0Z)
- Automotive temperature qualification supports demanding vehicle environments (vs. TJA1128GTK/0Z)
Designhinweise
Follow the NXP TJA1128 recommended layout and place the input, output, and LIN-interface capacitors at the pins specified by the manufacturer. Keep the 14-HVSON exposed thermal or ground structure free of unintended copper keepouts. The 3 mm by 4.5 mm footprint requires accurate land geometry and adequate assembly clearance for lead-free inspection.
Verify that the connected regulator variant produces the voltage required by the local microcontroller and peripherals. The integrated LDO can deliver up to 85 mA, so account for regulator dissipation across the actual 5 V to 28 V input range and use the manufacturer guidance for thermal derating. Do not treat 85 mA as the thermal design limit without checking the operating ambient and PCB copper.
Confirm the regulator output option, temperature grade, and exact order code before releasing a PCB or production order. The TJA1128GTK/0Z is a close functional candidate, but a matching package and headline performance profile do not by themselves prove identical qualification for every deployment. Review the NXP datasheet, package drawing, lifecycle status, and application requirements before substitution.
Route the LIN line away from sensitive sensor inputs and maintain the geometry shown in the NXP application guidance. The single-wire LIN network can combine communication and wake-up signaling, so unintended board coupling or excessive ground return current may affect noise immunity. Keep ground paths short and follow the manufacturer's recommendation for bus-shield or termination arrangements when applicable.
Configure the window watchdog to match the microcontroller's actual service interval rather than a nominal task period. Validate both early and late refresh timing, startup behavior, and the reaction to a stalled controller. This prevents a valid but infrequent service routine from producing a false timeout or allowing a failed controller to remain active longer than intended.
Compliance-Informationen
The TJA1128ETK/0Z is identified as AEC-Q100 Grade 0 qualified with a 150 °C junction-temperature rating. Other environmental and material-compliance declarations are not established here.