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Infineon Technologies TLE8457BLEXUMA1
- Part No.:
- TLE8457BLEXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-TDFN Exposed Pad
- Datasheet:
-
TLE8457BLEXUMA1.pdf
- Description:
- IC TRANSCEIVER 1/1 PGTSON81
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
TLE8457BLEXUMA1 from Infineon Technologies is a monolithic LIN transceiver with integrated 3.3 V low-dropout voltage regulator (70 mA), compliant with ISO 17987-4 and SAE J2602, featuring ultra-low standby current (20 µA typical), BUS short-to-GND/short-to-VBAT protection, and VCC undervoltage reset (NRST) - deployed in automotive window lifters and ambient lighting modules.
For engineers reviewing the TLE8457BLEXUMA1 datasheet, TLE8457BLEXUMA1 pinout, TLE8457BLEXUMA1 application, or TLE8457BLEXUMA1 equivalent, key selection criteria include LIN bus wake-up capability, integrated LDO output stability with 1 µF ceramic capacitor, sleep-mode leakage (<16 µA), EN-controlled mode transitions, and AEC-Q100 qualification for permanent battery-supplied systems.
Technical Context
The device integrates a LIN physical layer transceiver and a BiCMOS-based 3.3 V LDO regulator on a single die, supporting bidirectional communication at up to 20 kBit/s. Its initialization watchdog enforces automatic transition to sleep mode if no microcontroller response occurs after power-up or wake-up events.
Operating modes - Normal, Standby, Init, and Sleep - are controlled via EN and TxD pins, with BUS wake-up detection triggering RxD low assertion without mode change in Standby. VCC undervoltage detection asserts NRST low for microcontroller reset, and overtemperature shutdown disables the LDO until thermal recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LIN Data Rate | Up to 20 kBit/s - supports full LIN 2.2A protocol timing requirements without external clocking. |
| LDO Output Voltage | 3.3 V ±2% - powers MCU and peripherals directly; stable with 1 µF ceramic output capacitor. |
| Standby Current | 20 µA typical - enables always-on battery-connected modules with minimal parasitic drain. |
| Sleep Mode Current | 16 µA max - ensures compliance with automotive "off" state current budgets (e.g., ISO 19453-3). |
| ESD Robustness | ±8 kV HBM - meets IEC61000-4-2 Level 4 for system-level surge immunity in vehicle cabins. |
| Bus Fault Protection | BUS short-to-VBAT and short-to-GND - prevents latch-up and enables safe operation during wiring faults. |
| Reset Threshold | VCC < 2.7 V (typ.) - asserts NRST low to hold MCU in reset until regulated supply stabilizes. |
Pinout & Package
Package: PG-TSON-8 (leadless, thermally enhanced), RoHS-compliant, supports automated optical inspection (AOI). Exposed thermal pad (PAD1) must be connected to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VS | Battery supply input | Accepts 5.5–27 V DC; 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 | Power and signal reference | Common return path for LDO, transceiver, and microcontroller; connects to thermal pad. |
| 4 BUS | LIN bus interface | Single-wire bidirectional node; includes integrated slave termination resistor network. |
| 5 RxD | Receive data output | Reflects LIN bus signal in Normal mode; pulses low to signal wake-up event in Init/Standby. |
| 6 TxD | Transmit data input | Microcontroller-driven; dominant time-out prevents bus lock-up if stuck low > tTO. |
| 7 NRST | Undervoltage reset output | Open-drain, pull-up internal; active-low reset signal synchronized to VCC regulation status. |
| 8 VCC | LDO regulated output | 3.3 V supply for MCU/peripherals; current-limited to 70 mA; requires 1 µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LIN Transceiver + LDO | Reduces BOM count by eliminating discrete regulator and bus buffer; simplifies layout in space-constrained modules. |
| Dominant Time-Out (TxD) | Prevents indefinite bus dominance; automatically disables transmitter if TxD remains low beyond tTO, avoiding network paralysis. |
| Initialization Watchdog | Forces transition to Sleep mode if microcontroller fails to respond within timeout - prevents uncontrolled power-up states. |
| BUS Short-Circuit Handling | Continues operation under BUS-to-GND or BUS-to-VBAT faults without damage or latch-up - critical for field reliability. |
| AEC-Q100 Qualified | Rated Grade 1 (−40 °C to +125 °C ambient); validated for automotive under-hood and cabin environments. |
Applications
| Window Lifter Control | Rain & Light Sensor Module |
|---|---|
|
Use Scenario: Motorized window actuation with position feedback and anti-pinch logic in passenger vehicles. IC Role / Device Role / Timing Role: LIN slave transceiver and local 3.3 V power source for MCU and Hall sensor interface. Use Value: Ultra-low standby current extends battery life during vehicle off-state; BUS fault tolerance prevents module failure due to wiring shorts. |
Use Scenario: Integrated ambient light and rain detection unit mounted behind rearview mirror. IC Role / Device Role / Timing Role: LIN physical layer interface and regulated supply for optical sensor ADC and MCU. Use Value: Stable 3.3 V LDO output eliminates need for external regulator; ±8 kV ESD robustness withstands ESD events during service access. |
| Sun Roof Control Module | Ambient Lighting System |
|
Use Scenario: Motor-driven sun roof with obstacle detection and multi-position memory. IC Role / Device Role / Timing Role: LIN slave node providing bus communication and local 3.3 V rail for motor driver logic and position encoder. Use Value: NRST output synchronizes MCU reset with LDO stabilization; wake-up via RxD enables fast response to user commands. |
Use Scenario: Interior LED lighting with dimming control and ambient color adjustment via LIN command. IC Role / Device Role / Timing Role: LIN transceiver and power source for RGB LED driver MCU and touch interface. Use Value: Sleep-mode current <16 µA meets OEM off-state leakage limits; AOI-compatible PG-TSON-8 enables high-yield SMT assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LIN transceiver with integrated LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE8457BSJ | Same functionality but in PG-DSO-8 package; lacks exposed thermal pad and AOI support. | Preferred where manual inspection or legacy DSO footprint is required; lower thermal performance than TSON-8. | Select when board-level rework or wave soldering is needed; avoid in high-ambient-temperature zones. |
| TLIN1029DRBR | 3.3 V LIN transceiver only (no LDO); 15 kBit/s max; ±12 kV ESD; smaller WSON-8 package. | Requires external regulator; suited for designs already using centralized 3.3 V rail and needing higher ESD margin. | Choose when system-level power architecture uses shared LDO; not drop-in for TLE8457BLEXUMA1's self-powered use cases. |
Compared with TLE8457BSJ, TLE8457BLEXUMA1 offers superior thermal dissipation and AOI compatibility; versus TLIN1029DRBR, it eliminates external regulator BOM cost and layout area but trades off peak ESD rating for integrated power capability.
Availability
TLE8457BLEXUMA1 is available at Aetrix Electronics and suitable for automotive window lifters, rain/light sensors, sun roof control modules, and ambient lighting systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE8457BLEXUMA1 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 sensor solutions, with global manufacturing and qualification infrastructure.
The TLE8457B belongs to Infineon's Automotive Transceivers product line, designed specifically for LIN-based body electronics modules requiring integrated power, robust fault handling, and AEC-Q100 compliance.
FAQ
What is the function of the NRST pin?
The NRST pin is an open-drain undervoltage reset output that goes logic low when VCC falls below 2.7 V (typical), holding the connected microcontroller in reset until the LDO output recovers. It features an internal pull-up resistor and is synchronized to the LDO regulation status - not a general-purpose reset input.
Can TLE8457BLEXUMA1 operate without an external crystal or oscillator?
Yes - the device contains no internal clock generator requiring external timing components. LIN timing is derived from the host controller's TxD signal; the transceiver itself is asynchronous and does not rely on crystals, RC networks, or PLLs for bus communication.
Is the BUS pin internally terminated for LIN slave operation?
Yes - the BUS pin includes an integrated slave termination network (resistive pull-up to VCC and pull-down to GND), eliminating the need for external resistors in standard LIN slave configurations per ISO 17987-4. No additional termination components are required for basic operation.
How does the initialization watchdog behave during power-up?
Upon power-up, the device enters Init mode and starts the initialization watchdog timer. If the microcontroller fails to drive TxD low within the timeout period (typically ~100 ms), the watchdog forces transition to Sleep mode - preventing uncontrolled operation and minimizing current draw in case of MCU failure or firmware hang.
TLE8457BLEXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-TDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- LINbus
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- -
- Receiver Hysteresis:
- 175 mV
- Data Rate:
- -
- Voltage - Supply:
- 3.3V
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- PG-TSON-8-1
TLE8457BLEXUMA1 FAQ
1.How can I place an order for TLE8457BLEXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE8457BLEXUMA1 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 TLE8457BLEXUMA1 reliable?
The price and inventory of TLE8457BLEXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE8457BLEXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE8457BLEXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE8457BLEXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE8457BLEXUMA1?
TLE8457BLEXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE8457BLEXUMA1 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 TLE8457BLEXUMA1?
For technical support, including TLE8457BLEXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE8457BLEXUMA1 requirements.
6.How does Aetrix verify that TLE8457BLEXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE8457BLEXUMA1 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 TLE8457BLEXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE8457BLEXUMA1?
All TLE8457BLEXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE8457BLEXUMA1, 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 TLE8457BLEXUMA1 part is unused and in its original packaging.
Return procedure for TLE8457BLEXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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