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Infineon Technologies TLE8457DLEXUMA1
- Part No.:
- TLE8457DLEXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-PowerTDFN
- Datasheet:
-
TLE8457DLEXUMA1.pdf
- Description:
- IC TRANSCEIVER 1/1 PGTDSON81
- Quantity:
- Payment:
- Shipping:
Inventory:10,079
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Product details
Overview
TLE8457DLEXUMA1 from Infineon Technologies is a monolithic automotive-grade LIN transceiver with integrated 3.3 V low-dropout voltage regulator (70 mA output), compliant with ISO 17987-4 and SAE J2602, supporting up to 20 kBit/s data rates, ultra-low standby current (20 µA typical), and BUS short-to-VBAT/GND protection - used in battery-supplied LIN slave modules such as rain sensors and window lifters.
For engineers reviewing the TLE8457DLEXUMA1 datasheet, TLE8457DLEXUMA1 pinout, TLE8457DLEXUMA1 application, or TLE8457DLEXUMA1 equivalent, this device is selected for its AEC-Q100 qualification, integrated reset output (NRST), ceramic-capacitor-compatible LDO, and bus wake-up capability in standby mode - critical for always-on automotive body electronics.
Technical Context
The TLE8457DLEXUMA1 integrates a LIN physical layer transceiver and a 3.3 V/70 mA linear regulator on a single BiCMOS die, enabling direct microcontroller supply without external LDO. Its receiver includes low-power wake-up detection on RxD, while transmitter features dominant time-out to prevent bus lock-up.
Operating modes - Normal, Standby, and Sleep - are controlled via EN and TxD pins; VCC undervoltage detection triggers NRST assertion, and overtemperature/short-circuit protections are embedded. The PG-TSON-8 package supports AOI and thermal dissipation via exposed pad connected to GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LIN Data Rate | Up to 20 kBit/s - meets full-speed requirement of LIN 2.2A and J2602 protocols. |
| VCC Output Voltage | 3.3 V ±2% - stable supply for 3.3 V microcontrollers and peripherals without external regulation. |
| Regulator Current | 70 mA max - sufficient to power MCU + small peripherals (e.g., sensor interface, LED driver) in satellite nodes. |
| Standby Current | 20 µA typical - enables permanent battery connection in body control modules with minimal drain. |
| Sleep Current | 16 µA max - lowest power state when bus communication and regulator are disabled. |
| ESD Robustness | ±8 kV HBM - exceeds IEC61000-4-2 Level 4, reducing need for external TVS in cost-sensitive designs. |
| Bus Wake-up Sensitivity | Detects LIN frame start bit in Standby mode - allows microcontroller to remain in stop mode until valid bus activity occurs. |
Pinout & Package
Package: PG-TSON-8 (leadless, thermally enhanced), RoHS-compliant, with exposed thermal pad (PAD) requiring GND connection for heat dissipation and EMC performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VS | Battery supply input | Accepts 5.5–27 V automotive battery rail; requires local decoupling capacitor for transient suppression. |
| 2 EN | Enable control input | Pull-down internal; logic high enables normal operation; controls mode transitions with TxD. |
| 3 GND | Ground reference | Common return for regulator, transceiver, and thermal pad; must be low-impedance PCB plane. |
| 4 BUS | LIN bus interface | Single-wire bidirectional I/O with integrated slave termination; handles short-to-VBAT/GND fault recovery. |
| 5 RxD | Receive data output | Reflects LIN bus signal in Normal mode; asserts logic low on bus wake-up event in Standby mode. |
| 6 TxD | Transmit data input | Microcontroller-driven; dominant time-out prevents indefinite bus dominance if MCU hangs. |
| 7 NRST | Reset output | Open-drain, active-low; signals VCC undervoltage or power-on reset to MCU; internal pull-up to VCC. |
| 8 VCC | Regulated output | 3.3 V supply for MCU/peripherals; stable with ≥1 µF ceramic capacitor; current-limited at 70 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3 V LDO | Eliminates external regulator, reduces BOM count and PCB area in space-constrained LIN nodes. |
| Ultra-low standby current (20 µA) | Enables always-on functionality in battery-powered modules without compromising vehicle parasitic drain limits. |
| Bus wake-up in Standby mode | Allows MCU to stay in deepest sleep while retaining LIN responsiveness - no external wake circuit needed. |
| VCC undervoltage detection with NRST | Provides hardware reset coordination between transceiver and MCU, ensuring deterministic startup and brownout recovery. |
| PG-TSON-8 with thermal pad | Improves thermal resistance by >30% vs DSO-8; supports AOI for automated assembly inspection and higher reliability. |
Applications
| Rain & Light Sensor Module | Window Lifter Control |
|---|---|
|
Use Scenario: Integrated sensor node mounted on windshield, powered continuously from vehicle battery. IC Role / Device Role / Timing Role: LIN transceiver handles command/response communication with body controller; integrated 3.3 V LDO powers ambient light and rain detection ICs. Use Value: 20 µA standby current ensures <10 µA total module drain, meeting OEM parasitic load targets for 30-day key-off battery life. |
Use Scenario: Door-mounted actuator module controlling glass position and anti-pinch function. IC Role / Device Role / Timing Role: Provides LIN interface and regulated 3.3 V supply to motor driver MCU; NRST synchronizes MCU reset with power-up. Use Value: BUS short-to-VBAT protection prevents latch-up during door harness chafing; wake-up on LIN frame avoids MCU polling overhead. |
| Sun Roof Control Module | Ambient Lighting Node |
|
Use Scenario: Roof console unit managing sun roof open/close, tilt, and obstacle detection. IC Role / Device Role / Timing Role: Acts as LIN slave transceiver and power source for position sensor and motor control logic. Use Value: 70 mA LDO output supports Hall sensor, MCU, and small driver IC; ±8 kV ESD robustness withstands service technician ESD events. |
Use Scenario: Distributed LED lighting control in cabin, linked via LIN to central lighting controller. IC Role / Device Role / Timing Role: Enables low-power LIN communication and supplies 3.3 V to RGB LED driver IC and touch interface. Use Value: Sleep mode (16 µA) allows instant wake-on-command without wake-line routing; ceramic capacitor compatibility simplifies layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LIN transceiver with integrated regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLIN1029DRBR | 3.3 V LDO (100 mA), supports LIN FD (up to 200 kBit/s), no integrated wake-up detection on RxD. | Requires external wake-up logic or MCU polling; better suited for future-proof LIN FD upgrades. | Select when higher data rate or LIN FD readiness is required; not drop-in due to different pinout and wake architecture. |
| TLE8457DSJ | Same silicon, but in PG-DSO-8 package; lacks thermal pad and AOI support; higher θJA (70 K/W vs 45 K/W). | Preferred for legacy reflow processes or where thermal pad soldering is not feasible. | Choose for cost-sensitive, non-AOI production lines where thermal performance margin is acceptable. |
Compared with TLIN1029DRBR, TLE8457DLEXUMA1 offers lower quiescent current and simpler wake handling but lacks LIN FD; versus TLE8457DSJ, it delivers superior thermal performance and automated inspection compatibility at identical functional spec.
Availability
TLE8457DLEXUMA1 is available at Aetrix Electronics and suitable for rain sensor modules, window lifter control units, sun roof systems, and ambient lighting nodes requiring stable component supply across automotive production lifecycles.
Supply support for TLE8457DLEXUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in automotive, power management, and industrial control ICs, with global manufacturing and AEC-Q100 validation infrastructure.
The TLE8457DLEXUMA1 belongs to Infineon's Automotive Transceivers product line, designed specifically for robust, low-power LIN slave nodes in harsh vehicle environments - emphasizing integration, reliability, and system-level power savings.
FAQ
What is the minimum VS supply voltage required for TLE8457DLEXUMA1 to enter Normal operation mode?
The device requires VS ≥ 5.5 V to initiate power-on reset and transition into Normal operation mode. Below this threshold, the internal bandgap reference and regulator do not stabilize, and NRST remains asserted. Functional operation is guaranteed only within the specified 5.5–27 V range per datasheet Section 5.2.
Can the TLE8457DLEXUMA1 drive a 5 V microcontroller directly?
No - the integrated regulator outputs only 3.3 V (±2%). Driving a 5 V MCU requires an external level shifter or separate 5 V supply. The device is intended for 3.3 V logic systems; interfacing with 5 V peripherals must use voltage translators on RxD/TxD lines per electrical characteristics in Section 6.1.
How does the BUS short-to-GND protection operate during Standby mode?
In Standby mode, the transceiver is disabled but the BUS pin remains internally monitored. If BUS is shorted to GND, the device detects excessive sink current and enters thermal shutdown, then automatically recovers after cooling. This behavior is independent of EN state and is documented in Section 4.4.2.
Is the exposed thermal pad (PAD) electrically connected internally?
Yes - the PAD is internally connected to GND and must be soldered to a dedicated GND copper pour on the PCB. It is not isolated; connecting it to any potential other than GND violates the absolute maximum ratings and risks latch-up or premature failure per Package Information Section 8.
TLE8457DLEXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-PowerTDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- LIN
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- -
- Receiver Hysteresis:
- -
- Data Rate:
- 20kbps
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TDSON-8-1
TLE8457DLEXUMA1 FAQ
1.How can I place an order for TLE8457DLEXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE8457DLEXUMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLE8457DLEXUMA1 reliable?
The price and inventory of TLE8457DLEXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8457DLEXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE8457DLEXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8457DLEXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE8457DLEXUMA1?
TLE8457DLEXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE8457DLEXUMA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLE8457DLEXUMA1?
For technical support, including TLE8457DLEXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8457DLEXUMA1 requirements.
6.How does Aetrix verify that TLE8457DLEXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE8457DLEXUMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE8457DLEXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE8457DLEXUMA1?
All TLE8457DLEXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8457DLEXUMA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLE8457DLEXUMA1 part is unused and in its original packaging.
Return procedure for TLE8457DLEXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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