TLE8457BLEXUMA1 - 3.3V 70mA LIN Transceiver | Infineon
N.º da peça: TLE8457BLEXUMA1 ✓ AtivoTLE8457BLEXUMA1 Visão geral
A LIN transceiver is the interface between a microcontroller and a LIN network. LIN, or Local Interconnect Network, is a low-cost single-wire serial bus used for distributed automotive and industrial control functions. Within the interface-IC hierarchy, the TLE8457BLEXUMA1 combines a LIN transceiver, a low-dropout regulator, a linear regulator, and a power-management IC in one device.
The principal features include compatibility with LIN specification 2.2A and SAE J2602, bidirectional bus communication, a stable 3.3 V output for a microcontroller and peripherals, and a regulator output current of up to 70 mA. The integrated regulator uses a low-dropout architecture to reduce the voltage difference required between the battery-derived input and the regulated 3.3 V rail.
Automotive EMC robustness is a core design consideration for this device. The integrated supply reduces the number of components near the LIN interface, while the TSON-8-1 package supports compact PCB placement. During standby, the device draws 20 microamperes according to the Infineon product page, helping conserve vehicle power when the associated ECU is inactive.
Typical uses include LIN-controlled vehicle body modules, door and seat controllers, climate-control peripherals, sensor interfaces, and small distributed control units. The 3.3 V regulator output is suitable for low-power microcontrollers and peripheral circuits whose current demand remains within the 70 mA capability of the device.
When laying out the PCB, use the manufacturer pin-description table to assign every PG-TSON-8-1 connection and follow the recommended application circuit for bus and supply decoupling. Confirm that the LIN bus voltage, supply conditions, regulator load, and automotive transient requirements of the complete module remain inside the device ratings before production release.
This product overview combines the Infineon interface and regulation functions with practical comparison, sourcing, and design guidance. It is intended to help engineers identify the correct LIN transceiver, plan its 3.3 V power architecture, and assess whether a verified drop-in alternative is available for the same footprint.
Alternativas drop-in para TLE8457BLEXUMA1 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasTLE8457BLEXUMA1 Especificações
| Product Type | 1-channel LIN transceiver with integrated low-dropout regulator |
| LIN Specification Compatibility | LIN 2.2A and SAE J2602 |
| Maximum LIN Data Rate | 20 kBit/s |
| Regulated Output Voltage | 3.3 V |
| Regulator Maximum Output Current | 70 mA |
| Standby Current | 20 microamperes |
| Regulator Architecture | Low-dropout voltage regulator |
| Bus Communication | Bidirectional single-wire communication |
| Supply Undervoltage Reset | Undervoltage reset function |
| Encapsulamento | PG-TSON-8-1 surface-mount package |
| Package Pin Count | 8 pins |
| Automotive EMC Robustness | Automotive EMC-compliant interface |
| Local Load Capability | 1 microcontroller and associated peripheral load |
| Recommended Local Supply | 3.3 V |
Guia de Configuração de Pinos do TLE8457BLEXUMA1 8 pins
Configuração de pinos para TLE8457BLEXUMA1 (pacote 8 pins). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para TLE8457BLEXUMA1.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
TLE8457BLEXUMA1 é adequado para 6 aplicaçãos: Automotive Door Control Module, Vehicle Seat Control Module, Climate-Control Sensor Node, LIN Actuator Gateway, Distributed Sensor and Switch Interface, Industrial LIN Controller Card.
Automotive Door Control Module
The TLE8457BLEXUMA1 fits a LIN door module that exchanges switch, latch, and motor-position information with a body controller while powering a local 3.3 V microcontroller. Its integrated regulator provides up to 70 mA, allowing the ECU to share a compact LIN interface and local supply without requiring a separate regulator when the load is within that limit. The transceiver supports bidirectional communication at up to 20 kBit/s and follows LIN 2.2A and SAE J2602, helping the design remain aligned with common automotive network requirements. The principal trade-off is thermal dissipation from the integrated regulator, which must be checked against the worst battery-to-3.3 V voltage difference and ambient temperature.
Recomendado
Vehicle Seat Control Module
A seat controller can use the TLE8457BLEXUMA1 for LIN communication and local 3.3 V power when the module includes a low-power controller, position sensing, and limited indicator or actuator drive electronics. Supporting up to 70 mA is useful for compact signal-processing circuits but does not cover high-current motor or solenoid drivers, which require separate switching stages. The device's 20 kBit/s LIN rate is appropriate for standard low-speed body-network control traffic, and the PG-TSON-8-1 footprint supports compact placement. Automotive EMI, ESD, ground-bounce, and power-transient requirements should be validated at the module level rather than inferred from the interface alone.
Recomendado
Climate-Control Sensor Node
The TLE8457BLEXUMA1 is suitable for a small climate-control node that reports temperature, humidity, or occupancy data over LIN and includes a low-power local controller. The integrated 3.3 V regulator can supply the controller and closely associated sensors up to 70 mA, reducing board area in space-constrained HVAC housings. Bidirectional LIN operation at up to 20 kBit/s supports command and diagnostic exchanges, while 20-microampere standby current helps limit parked-vehicle battery drain. Sensor excitation and valve-driver currents must remain outside the regulator budget, and the completed node should be tested for bus fault recovery, ground-offset behavior, and supply transients.
Recomendado
LIN Actuator Gateway
A LIN actuator gateway can place the TLE8457BLEXUMA1 beside a microcontroller to handle communication with the vehicle LIN network while supplying a local 3.3 V rail. The interface supports up to 20 kBit/s, which is suitable for typical command and diagnostic traffic involving slow actuator functions. Its integrated regulator can provide up to 70 mA to logic and sensing circuits, but solenoids, relays, lamps, and motor drivers require their own power paths and protection. The principal design benefit is reduced component count and board area, while the principal constraint is that all regulator load and thermal calculations must include worst-case supply voltage and ambient conditions.
Recomendado
Distributed Sensor and Switch Interface
The TLE8457BLEXUMA1 can connect a distributed switch or sensor endpoint to a LIN master while supplying nearby low-power circuitry from its 3.3 V regulator. This is useful where a dedicated supply regulator would add cost or board area, especially in compact body modules. The 70 mA output rating is suitable for sensor conditioning, logic, and limited status indication, but not for loads requiring significant transient current. LIN 2.2A and SAE J2602 compatibility support standardized automotive network behavior, while bidirectional communication allows the endpoint to report status and receive commands. Final qualification should include fault detection, bus wake-up, sleep behavior, and electrical transient testing.
Recomendado
Industrial LIN Controller Card
The TLE8457BLEXUMA1 can support compact LIN controller cards used in equipment cabinets, sensor backplanes, and distributed industrial control systems where the bus topology follows LIN practice. The 20 kBit/s data rate is sufficient for configuration, diagnostic, and supervisory traffic, and the 3.3 V regulator can power a controller and limited peripherals up to 70 mA. Bidirectional communication supports both node status reporting and remote commands. Industrial users should still validate grounding, cable length, bus termination strategy, EMC immunity, and protection for their installation. The integrated regulator's thermal performance is especially important in enclosed equipment where ambient temperature may remain elevated during continuous operation.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TLE8457BLEXUMA1 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Brand | Infineon Technologies |
| Package | PG-TSON-8-1 |
| LIN Data Rate | Up to 20 kBit/s |
| LIN Specification | LIN 2.2A and SAE J2602 |
| Integrated Regulator Output | 3.3 V |
| Regulator Output Current | Up to 70 mA |
| Standby Current | 20 microamperes |
| Bus Communication | Bidirectional single-wire communication |
Principais diferenciais
- Integrates the LIN interface and local supply (vs TLE7257SJXUMA1)
- Provides a defined 20 kBit/s LIN data rate (vs TLE7257SJXUMA1)
- Supports low-power inactive operation (vs TLE7257SJXUMA1)
Notas de projeto
Keep the complete 3.3 V load within the 70 mA regulator capability, including microcontroller, sensor, and pull-up currents. Check regulator heat dissipation at the highest expected input voltage and lowest operating supply condition. Estimated: regulator dissipation is approximately (VIN - 3.3 V) multiplied by the worst-case load current; this calculation is an engineering estimate and must be checked against the manufacturer's thermal limits.
Follow the Infineon application-circuit layout and place the required input, output, and bus decoupling components directly at their associated device pins. Keep the LIN route away from sensitive high-impedance inputs and minimize loop area around the transceiver. The manufacturer pin-description table controls assignment of the PG-TSON-8-1 footprint, including the ground and exposed-pad connection.
Do not treat every LIN transceiver as a direct substitute for the TLE8457BLEXUMA1. A replacement must preserve the integrated 3.3 V regulator, supply current, pin functions, LIN timing, wake/sleep behavior, and fault handling. Also avoid exceeding the device's 20 kBit/s bus limit or assuming that the 70 mA regulator rating permits high-current actuator loads.
Validate the complete module for automotive EMC requirements, including conducted and radiated immunity, ESD, transient pulses, and ground-offset behavior. The device's automotive EMC robustness is a component-level feature, not a guarantee that every PCB layout or wiring strategy passes system qualification. Include bus faults and power-condition corners in the production test plan.
Informações de conformidade
Compliance declarations must be confirmed for the exact ordering code from the manufacturer's product page or material declaration.
