TLE8457ALEXUMA1 - LIN Transceiver with 5V LDO | Infineon
MPN： TLE8457ALEXUMA1 ✓ 啟用中TLE8457ALEXUMA1 概覽
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.
直接替換替代品，適用於 TLE8457ALEXUMA1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLE8457ALEXUMA1 （相同外形與佔位） — 差異在於 Package, Product Type.
TLE8457ASJXUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLE8457ALE
✅ 直接替換📋 參考替代品（不在目錄中）
TLE8457ALEXUMA1 規格
| 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 |
| 工作溫度範圍 | -40°C to +150°C |
| Automotive Qualification | AEC-Q100 qualified |
| LIN Compliance | LIN compliant |
| 封裝 | PG-TSON-8-1 |
| 腳位數 | 8 pins |
| 安裝類型 | Surface mount |
| Exposed Pad | Yes |
| RoHS 狀態 | Compliant |
| Transceiver Count | 1 transceiver |
TLE8457ALEXUMA1 pg-tson-8-1 腳位配置指南
TLE8457ALEXUMA1（pg-tson-8-1 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： TLE8457ALEXUMA1.
請參閱 資料表 以查看完整腳位配置。
典型應用
TLE8457ALEXUMA1 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 TLE8457ALEXUMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLE8457ASJXUMA1 | TLE8457ALE |
|---|---|---|---|
| Package | PG-TSON-8-1 | PG-TSON-8-1 | PG-TSON-8-1 |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
主要差異化特點
- Integrates the LIN physical layer and regulated auxiliary supply (對比TLE8457ASJXUMA1)
- Automotive temperature and qualification positioning (對比TLE8457ALE)
- Low-power standby behavior (對比TLE8457ASJXUMA1)
設計說明
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.
合規資訊
The product is identified as AEC-Q100 qualified, LIN compliant, and RoHS compliant. Other environmental or material-compliance declarations are not stated.
