TLE8457ALEXUMA1 - LIN Transceiver with 5V LDO | Infineon
部品番号: TLE8457ALEXUMA1 ✓ 生産中TLE8457ALEXUMA1 概要
A LIN transceiver is a physical-layer interface IC that connects a low-cost microcontroller to a LIN bus used in distributed vehicle networks. LIN, short for Local Interconnect Network, provides a single-wire, master-slave communication architecture for body-control modules, door controls, seat modules, lighting controls, climate-control components, and other distributed automotive electronics. The TLE8457ALEXUMA1 places the bus transceiver and regulator in one compact surface-mount device, reducing the component count required at a LIN node.
The principal operating specifications are a 20 kbit/s LIN data rate, a 5.5 V to 28 V supply range, and a 5 V regulated output rated for 70 mA. The device operates from -40°C to +150°C, making it suitable for demanding automotive environments. Its integrated 5 V regulator can power a LIN-compatible microcontroller or local logic, while the bus interface handles LIN signal transmission and reception between the ECU and network.
The TLE8457ALEXUMA1 is identified as a half-duplex LIN transceiver. LIN bus communication is inherently half duplex because the same wire carries serialized data in either direction under master-slave control. The integrated regulator and transceiver provide a compact node-level solution, but the application still requires correct bus termination, reference-ground wiring, decoupling, protection against automotive transients, and firmware that implements the applicable LIN protocol.
Typical uses include LIN-to-CAN gateway hardware, automotive climate-control controllers, body-control modules, ambient-light sensors, seat and door controls, switch-bank modules, and small electric actuators. The 70 mA regulator output is suitable for low-power local circuitry but should not be treated as a general-purpose high-current supply. Validate the complete power budget of the attached ECU before assigning additional load to the 5 V output.
For PCB implementation, place the device close to the LIN connector or bus header, follow the pin-description and recommended-layout sections of the Infineon datasheet, and provide local supply decoupling. The exposed-pad package also requires attention to copper area and thermal flow, particularly when ambient temperature and nearby power components are elevated.
This product page combines the manufacturer interface information, automotive qualification details, package characteristics, application guidance, and drop-in replacement analysis to support faster engineering selection and PCB planning.
ドロップイン代替品: TLE8457ALEXUMA1 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: TLE8457ALEXUMA1 （同一形状・フットプリント） — 相違点: Package, Product Type.
TLE8457ASJXUMA1
✅ ドロップイン価格はお問い合わせください
データシートを見る →TLE8457ALE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLE8457ALEXUMA1 仕様
| Product Type | LIN transceiver with integrated 5 V regulator |
| LIN Bus Data Rate | 20 kbit/s |
| Bus Operating Mode | Half duplex |
| Supply Voltage Range | 5.5 V to 28 V |
| Integrated Regulator Output | 5 V |
| Integrated Regulator Output Current | 70 mA |
| Standby Current | 20 µA |
| 動作温度範囲 | -40°C to +150°C |
| Automotive Qualification | AEC-Q100 qualified |
| LIN Compliance | LIN compliant |
| パッケージ | PG-TSON-8-1 |
| ピン数 | 8 pins |
| 実装タイプ | Surface mount |
| Exposed Pad | Yes |
| RoHS ステータス | Compliant |
| Transceiver Count | 1 transceiver |
TLE8457ALEXUMA1 pg-tson-8-1 ピン配置ガイド
TLE8457ALEXUMA1 (pg-tson-8-1 パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: TLE8457ALEXUMA1.
詳細は データシート をご参照ください。
主な用途
TLE8457ALEXUMA1 の用途: 6 件s: Automotive LIN Body-Control Node, LIN-to-CAN Gateway Module, Automotive Climate-Control Module, Door and Seat Control Module, Automotive Lighting Control Module, LIN Sensor and Switch Module.
Automotive LIN Body-Control Node
The TLE8457ALEXUMA1 fits compact LIN slave nodes that need bus communication and local regulated power in one package. Its 20 kbit/s LIN interface connects the ECU microcontroller to a single-wire vehicle network, while the integrated 5 V regulator can supply up to 70 mA to the controller and associated low-power logic. The 5.5 V to 28 V supply range and -40°C to +150°C operating range suit automotive electrical environments. A practical design places the transceiver near the LIN connector, follows the manufacturer pin and layout guidance, and checks the complete ECU load against the 70 mA regulator limit.
おすすめ
LIN-to-CAN Gateway Module
The TLE8457ALEXUMA1 is useful on the LIN side of a vehicle gateway because it combines a 20 kbit/s LIN physical layer with a 5 V, 70 mA regulator. This allows a gateway controller to communicate with LIN subnets without using a separate 5 V regulator, provided the gateway's regulated current remains below 70 mA. The device's 5.5 V to 28 V operating range supports vehicle-level input arrangements. In implementation, preserve the exposed-pad grounding and thermal path, place decoupling near the supply pins, and apply the manufacturer's LIN bus protection and routing recommendations.
おすすめ
Automotive Climate-Control Module
A climate-control ECU can use the TLE8457ALEXUMA1 for LIN communication with remote temperature, blower, flap, or button modules. The 20 kbit/s bus rate matches conventional LIN networks, while the integrated 5 V output provides regulated local power to a low-power controller. Its -40°C to +150°C range is relevant to cabin modules that may experience significant temperature variation. Design the regulator budget for the controller and attached sensors without exceeding 70 mA, and use the manufacturer pin table and recommended layout to keep the LIN connection physically separated from sensitive analog and power paths.
おすすめ
Door and Seat Control Module
The TLE8457ALEXUMA1 supports distributed door and seat-control modules that receive commands over LIN while operating from the vehicle electrical system. Its integrated 5 V regulator reduces the local power-component count for low-power switch or motor-control electronics, and the 20 kbit/s rate supports standard LIN frame communication. The 70 mA regulator ceiling is the primary design constraint, so the controller, sensor interfaces, and any local logic must be budgeted together. Keep the transceiver close to the bus connector, provide the specified bus termination, and maintain a low-impedance ground return for reliable LIN signaling.
おすすめ
Automotive Lighting Control Module
The TLE8457ALEXUMA1 can serve as the network interface in a LIN-controlled lighting module, such as an ambient-light, footwell, or exterior-lamp controller. The device handles the 20 kbit/s LIN physical layer and supplies a regulated 5 V rail up to 70 mA for local controller logic. This integration is valuable where board space is constrained and the lighting module does not need more than 70 mA of regulated auxiliary power. Keep high-current lamp drivers electrically separated from the transceiver area, follow the recommended decoupling arrangement, and account for automotive transients and ground offsets in the complete module.
おすすめ
LIN Sensor and Switch Module
The TLE8457ALEXUMA1 is appropriate for compact LIN sensor nodes and switch banks that exchange commands or measurements over the vehicle network. Its 20 kbit/s communication rate supports standard LIN sensor traffic, while the integrated 5 V regulator can power a low-power sensing or switching circuit up to 70 mA. The wide 5.5 V to 28 V supply range and -40°C to +150°C temperature capability support harsh installation locations. Confirm the regulator current including startup and peripheral loads, use the manufacturer's specified bus and termination arrangement, and route the exposed pad into a suitable copper and thermal structure.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TLE8457ALEXUMA1 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TLE8457ASJXUMA1 | TLE8457ALE |
|---|---|---|---|
| Package | PG-TSON-8-1 | PG-TSON-8-1 | PG-TSON-8-1 |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
主な差別化要因
- Integrates the LIN physical layer and regulated auxiliary supply （vs TLE8457ASJXUMA1)
- Automotive temperature and qualification positioning （vs TLE8457ALE)
- Low-power standby behavior （vs TLE8457ASJXUMA1)
設計ノート
Follow the Infineon datasheet's PG-TSON-8-1 recommended-layout section when placing the LIN transceiver, decoupling capacitors, exposed pad, and bus connection. Place the device near the LIN connector or header to minimize sensitive-node exposure and route the bus conductor away from clocks, switching power nodes, and analog inputs. The exposed pad requires a properly connected copper and thermal structure according to the package documentation; do not treat it as an unused mechanical land.
Budget the integrated 5 V regulator against the complete ECU load and keep the continuous requirement below 70 mA. Include controller consumption, sensor interfaces, indicator loads, and startup transients when assessing margin. Because the device accepts 5.5 V to 28 V, the vehicle supply path must also satisfy automotive transient and reverse-polarity requirements. Use the manufacturer's recommended input and output capacitance values near the relevant device pins.
The automotive-grade PG-TSON-8-1 package uses an exposed pad for heat spreading. Connect that pad according to the Infineon package drawing and provide uninterrupted copper where layout rules allow. Avoid placing heat-generating components immediately beneath the transceiver when the module is expected to operate near 150°C. Validate the final ECU temperature rise in its enclosure, because the internal temperature at the device can exceed ambient temperature even when the package rating is not exceeded.
Do not assume that the LIN bus, vehicle supply, and logic ground share identical noise and transient behavior. Apply the manufacturer's bus protection and reference-ground arrangement, install the required termination correctly, and test the node with realistic wiring length and automotive supply disturbances. Also verify that firmware supports the intended LIN frame schedule and baud rate; a physically correct transceiver cannot compensate for incompatible master timing or an incorrect command set.
コンプライアンス情報
The product is identified as AEC-Q100 qualified, LIN compliant, and RoHS compliant. Other environmental or material-compliance declarations are not stated.
