TLE8457CLEXUMA1 - 5V LIN Transceiver with 70mA LDO
MPN: TLE8457CLEXUMA1 ✓ ActiveTLE8457CLEXUMA1 Overview
A LIN transceiver is an interface integrated circuit that connects a microcontroller to a Local Interconnect Network bus. LIN is a low-cost, single-wire automotive communication network used for distributed vehicle functions such as body electronics, climate controls, lighting modules, seat controls, and door modules. A LIN transceiver combines the physical-layer driver and receiver with logic interfacing, while an integrated LDO allows the device to establish a local regulated supply for nearby control electronics.
The principal characteristics of the TLE8457CLEXUMA1 are its integrated 5 V regulator, 70 mA regulator output, 20 kBd bus speed, and 20 µA standby current. Combining the LIN interface and regulator in one package reduces the number of components required beside a microcontroller. This integration can simplify PCB routing while reducing the area required for a basic LIN-connected control node. The exposed-pad TSON package also provides a defined thermal path from the device to the PCB copper area.
The device is identified as an automotive-grade LIN interface solution with AEC-Q100 qualification. Its 20 kBd communication rate is appropriate for LIN networks that use the standardized low-speed automotive communication profile. The 5 V regulator output supplies the local node electronics, while the LIN interface handles communication between the node and the vehicle bus. The 70 mA output capability should be evaluated against the combined load current of the microcontroller, pull-up circuitry, sensors, and attached peripherals.
Typical uses include LIN-controlled body modules, automotive switch and relay interfaces, climate-control panel endpoints, lighting controllers, seat and door electronics, and small sensor nodes. In these systems, the microcontroller handles application logic, the TLE8457CLEXUMA1 handles the physical LIN connection, and the integrated regulator powers suitable low-current circuitry. System partitioning must ensure that the regulator load remains within its specified capability and that the automotive supply network meets the device requirements shown in the manufacturer documentation.
When laying out the PCB, use the exposed pad as part of the thermal and ground structure and follow the manufacturer’s land-pattern, pin-assignment, and assembly guidance. Place the decoupling capacitors close to their associated supply pins with short return paths. The LIN bus connection also needs careful review of transceiver placement, trace geometry, grounding, and protection strategy so that switching events and external wiring do not degrade communication reliability.
This product page organizes the confirmed device functions, automotive interface role, package information, and engineering use cases into one reference. It also distinguishes verified drop-in replacements from functional alternatives so that PCB reuse decisions are based on package, pin, and parameter compatibility rather than only on the shared LIN interface category.
Drop-in alternatives for TLE8457CLEXUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesTLE8457CLEXUMA1 Specifications
| Product Type | LIN transceiver with integrated low-dropout regulator |
| LIN Bus Data Rate | 20 kBd |
| Integrated Regulator Output Voltage | 5 V |
| Integrated Regulator Output Current | 70 mA |
| Standby Current | 20 µA |
| Transceiver Configuration | 1/1 half LIN transceiver |
| Package | PG-TSON-8-1, 8-pin |
| Package Type | Exposed-pad surface-mount TSON |
| Mounting Type | Surface mount |
| Order Packaging | Tape and reel |
| Automotive Qualification | AEC-Q100 qualified |
| Application Category | Automotive LIN vehicle-network interface |
TLE8457CLEXUMA1 exposed-pad surface-mount tson Pin Configuration Guide
Pin configuration for TLE8457CLEXUMA1 (exposed-pad surface-mount tson package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for TLE8457CLEXUMA1.
Refer to the datasheet for full pin configuration.
Typical Applications
TLE8457CLEXUMA1 is suitable for 6 applications: Automotive Body Control Node, LIN-Controlled Lighting Module, Climate-Control Panel Endpoint, Door and Seat Control Module, Automotive Sensor Gateway, Switch and Relay LIN Interface.
Automotive Body Control Node
The TLE8457CLEXUMA1 fits an automotive body-control node that connects a microcontroller to a LIN subnetwork for doors, windows, seat controls, or lighting. Its 20 kBd LIN interface provides the physical communication path, while the integrated 5 V regulator can supply the MCU and suitably limited peripherals up to 70 mA. This integration reduces the component count beside the MCU and supports a compact PCB. Confirm that the combined steady and transient load remains below 70 mA and that the node’s vehicle supply and bus protection satisfy the manufacturer requirements.
Recommended
LIN-Controlled Lighting Module
A lighting module can use the TLE8457CLEXUMA1 as its LIN physical interface and local 5 V supply source. The transceiver operates at 20 kBd for communication with the vehicle network, while the integrated regulator provides up to 70 mA for a controller and control electronics. The regulator output is intended for the logic portion of the module; high-current lamp or driver loads should remain on appropriately protected power paths. Thermal analysis must include any regulator dissipation between the vehicle supply and the regulated 5 V rail.
Recommended
Climate-Control Panel Endpoint
The TLE8457CLEXUMA1 is appropriate for a climate-control panel endpoint that receives commands over a LIN bus and operates local buttons, sensors, indicators, or display-control logic. Its integrated 5 V regulator provides a convenient supply for an MCU and low-current peripherals, with up to 70 mA available for that regulated domain. The 20 µA standby characteristic can benefit power-managed panel electronics. Before assigning the output, sum the load from the MCU, sensors, interface logic, and indicators so the module does not exceed the regulator’s current rating.
Recommended
Door and Seat Control Module
The TLE8457CLEXUMA1 can support distributed door or seat-control modules that use LIN for switch, motor-command, or sensor communication. Combining a 20 kBd LIN transceiver with a 5 V regulator gives the module a compact interface and local supply arrangement in one package. The 70 mA regulator output can support a suitable controller and sensors, but it should not be assumed to power high-current actuators directly. Use separate driver stages for larger loads and verify standby behavior across the complete module, including pull-ups and sensors.
Recommended
Automotive Sensor Gateway
The TLE8457CLEXUMA1 fits a small gateway where several low-current sensors communicate through a LIN endpoint. The MCU can read the sensors and translate their information onto the LIN bus through the integrated 1/1 half transceiver. Its 5 V regulator offers up to 70 mA for the MCU and compatible sensor circuitry, simplifying the power tree for compact modules. Account for sensor startup currents and ensure that they remain compatible with the regulated rail’s transient and thermal capability.
Recommended
Switch and Relay LIN Interface
The TLE8457CLEXUMA1 can serve as the communication and regulated-logic interface in a LIN-controlled switch or relay module. The 20 kBd transceiver connects the MCU to the vehicle network, while the integrated 5 V regulator supplies up to 70 mA for sensing and control electronics. High-coil or high-current relay loads should use a separate driver and supply path rather than loading the regulator output. Include transient suppression appropriate to the load and vehicle environment, and validate it against the manufacturer protection specifications.
Recommended
Recommended Products Summary
Engineering reference data for TLE8457CLEXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Product Type | LIN transceiver with integrated 5 V regulator |
| Brand | Infineon Technologies |
| Package | PG-TSON-8-1, 8-pin exposed-pad TSON |
| LIN Data Rate | 20 kBd |
| Integrated Regulator Output | 5 V |
| Regulator Output Current | 70 mA |
| Standby Current | 20 µA |
| Automotive Qualification | AEC-Q100 qualified |
| Mounting Type | Surface mount |
| Order Packaging | Tape and reel |
Key Differentiators
- Integrated local supply (vs Generic LIN transceiver without an integrated regulator)
- Low standby consumption (vs Generic LIN transceiver with a higher standby load)
- Automotive interface integration (vs Generic non-automotive LIN transceiver)
Design Notes
Calculate the regulated-node budget from the MCU, sensors, logic loads, pull-ups, and transient startup currents. The TLE8457CLEXUMA1 regulator is specified for up to 70 mA, so the design should retain margin rather than assign the full rating to routine operation. Keep relay, lamp, and motor power on separate paths when those loads exceed the regulator capability.
Estimated: regulator dissipation equals the difference between input and 5 V output voltage multiplied by output current. For example, at an 8 V input and 50 mA output, the estimated dissipation is 150 mW before accounting for other device losses. Check this heat against the exposed-pad copper area and the manufacturer’s thermal guidance rather than relying on the nominal package rating alone.
Follow the manufacturer’s PG-TSON-8-1 land pattern and place input and output capacitors close to the relevant device pins. Connect the exposed pad to the prescribed copper structure with multiple thermal vias where recommended. Keep the LIN route away from switching nodes and maintain a direct return path to reduce coupling between the bus and the MCU supply network.
Do not treat a generic LIN transceiver as a drop-in substitute for the TLE8457CLEXUMA1. The integrated regulator, exact pin assignments, exposed-pad implementation, electrical limits, and standby behavior all matter. Before approving a replacement, compare the manufacturer pin tables, regulator output capability, LIN timing, protection characteristics, and PCB dimensions.
Compliance Information
The product is identified as AEC-Q100 qualified. Other environmental and material-compliance declarations require confirmation from the manufacturer documentation.
