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Infineon Technologies TLE9471ESXUMA1
- Part No.:
- TLE9471ESXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Specialized ICs
- Package:
- 24-TSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLE9471ESXUMA1.pdf
- Description:
- IC SYST BASIS CHIP TSDSO24-1
- Quantity:
- Payment:
- Shipping:
Inventory:2,935
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Product details
Overview
TLE9471ESXUMA1 from Infineon is a monolithic System Basis Chip (SBC) integrating a 5 V/500 mA buck DC/DC regulator, a 5 V/100 mA LDO with off-board protection, a high-speed CAN FD transceiver (up to 5 Mbit/s), configurable HV GPIO, and cyclic wake/sense functionality - all in a PG-TSDSO-24-1 exposed-pad package. It serves as main power supply and CAN interface for automotive ECUs such as HVAC control panels and light control units.
For engineers reviewing the TLE9471ESXUMA1 datasheet, TLE9471ESXUMA1 pinout, TLE9471ESXUMA1 application, or TLE9471ESXUMA1 equivalent, key selection criteria include CAN FD compliance (ISO 11898-2:2016), dual-regulator output capability, low quiescent current in Stop/Sleep mode (<30 µA), integrated spread spectrum modulation for EMC optimization, and AEC-Q100 qualification for automotive use.
Technical Context
The device implements a state-machine-driven SBC architecture with five operational modes (Normal, Stop, Sleep, Restart, Fail-Safe), each supporting configurable wake sources including CAN message, bi-level HV wake input, and periodic Cyclic Wake. Its SPI interface enables full register-based configuration of watchdog timeout, GPIO function mapping, and voltage monitoring thresholds.
Core timing and safety functions include a configurable window watchdog with reset output, undervoltage detection on both regulators, overtemperature shutdown, and dedicated TEST pin entry into Development Mode (watchdog halted). The charge pump output supports N-channel MOSFET reverse-polarity protection with spread spectrum modulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Regulator Output | 5 V ±2%, 500 mA max - powers microcontroller core logic with integrated spread spectrum for reduced EMI peaks. |
| LDO Regulator Output | 5 V ±2%, 100 mA max - supplies sensors with short-to-battery protection and off-board usage capability. |
| CAN FD Data Rate | Up to 5 Mbit/s - compliant with ISO 11898-2:2016 and SAE J2284, enabling high-bandwidth diagnostics and firmware updates. |
| Quiescent Current (Sleep) | ≤30 µA - enables permanent battery connection in always-on automotive modules without excessive drain. |
| Operating Voltage Range | 4.5 V to 28 V - accommodates cold-crank (4.5 V) and load-dump (28 V) conditions per ISO 16750-2. |
| Temperature Range | −40 °C to +150 °C - qualified per AEC-Q100 Grade 0 for under-hood and cabin applications. |
| Package | PG-TSDSO-24-1 with exposed thermal pad - provides low thermal resistance (RthJA = 45 K/W) for high-power dissipation in compact layouts. |
Pinout & Package
Package: PG-TSDSO-24-1 (150 mil), thermally enhanced with exposed copper pad for PCB heat sinking. Pin count: 24, lead pitch: 0.65 mm, RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBB | Main supply input | 4.5–28 V battery input; connects to external decoupling and reverse-polarity protection circuitry. |
| VREG1 | Buck regulator output | 5 V/500 mA regulated supply for MCU core; requires external LC filter (10 µH + 22 µF). |
| VREG2 | LDO regulator output | 5 V/100 mA sensor supply; includes short-to-battery protection and thermal foldback. |
| CANH / CANL | CAN FD differential bus interface | High-speed transceiver pins supporting dominant clamping, bus termination control, and wake detection. |
| WAKE | HV wake input | Bi-level sensitive input (1.5 V / 12 V thresholds) for wake-up via external switch or voltage monitor. |
| GPIO | Configurable HV I/O | Programmable as fail output, wake input, high-side switch (400 mA), or low-side switch (600 mA). |
| SPI_MOSI / MISO / SCLK / CSN | SPI interface | 16-bit SPI for register read/write; supports daisy-chaining and CRC error detection. |
| TEST | Development mode entry | Pull-low to enter Development Mode (watchdog disabled, internal clocks frozen for debug). |
Key Features
| Feature | Design Value |
|---|---|
| Cyclic Wake & Sense | Configurable timer-based wake-up and sensing in Normal/Stop/Sleep modes - eliminates need for external RTC or wake controller. |
| Spread Spectrum Modulation | Applied to buck regulator and charge pump - reduces peak EMI by >10 dB across 150 kHz–108 MHz band, easing EMC certification. |
| Fail-Safe Output (FO) | Dedicated open-drain output signaling system fault (e.g., overtemperature, UVLO, watchdog timeout) - drives external LED or MCU interrupt. |
| Charge Pump Output | Generates gate drive for external N-MOSFET - enables reverse-polarity protection or load-switching without discrete charge pump IC. |
| High-Voltage Measurement | Alternate GPIO function measuring up to 28 V with 10-bit resolution - replaces external resistor divider for battery monitoring. |
Applications
| Light Control Unit (LCU) | HVAC ECU and Control Panel |
|---|---|
|
Use Scenario: Front/rear ambient lighting with CAN FD-based dimming commands and thermal derating. IC Role / Device Role / Timing Role: Main power supply (VREG1/VREG2), CAN FD interface, and fail-safe signaling for LED driver ICs. Use Value: Integrated dual regulators eliminate discrete LDO; Cyclic Sense monitors ambient temperature without MCU wake-up. |
Use Scenario: Cabin climate control with motorized actuators, temperature sensors, and diagnostic logging. IC Role / Device Role / Timing Role: System basis chip providing MCU power, CAN FD communication, and HV GPIO for actuator drivers. Use Value: Charge pump drives N-MOSFET for reverse-polarity protection; WAKE input detects ignition-on event. |
| Water Pump ECU | Seat Belt Pretensioner Module |
|
Use Scenario: Electric coolant pump with speed control, fault reporting, and battery voltage monitoring. IC Role / Device Role / Timing Role: Power management (buck + LDO), CAN FD telemetry, and HV measurement for battery rail sensing. Use Value: High-voltage measurement pin replaces external voltage divider; low Sleep-mode current extends battery life during vehicle off-state. |
Use Scenario: Pyrotechnic pretensioner activation triggered by crash CAN messages and monitored via safety watchdog. IC Role / Device Role / Timing Role: Safety-critical SBC delivering regulated power, CAN FD reception, and fail-safe output to airbag controller. Use Value: Window watchdog with configurable timeout ensures deterministic reset on software hang; FO pin signals fault to airbag ECU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar System Basis Chip applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE9263-2QX | 3.3 V main regulator (VREG1), no CAN FD support (HS-CAN only), lower current (300 mA buck) | Suitable for 3.3 V MCU systems without FD bandwidth needs; lacks spread spectrum modulation | Select when cost-sensitive 3.3 V designs require basic CAN 2.0B and lower power delivery |
| TLE9472ESXUMA1 | Identical pinout and feature set but adds Partial Networking (PN) support for selective CAN node wake-up | Required for architectures using CAN PN to reduce network-wide wake events and system current draw | Select when CAN Partial Networking compliance is mandated by OEM gateway requirements |
Compared with TLE9263-2QX, TLE9471ESXUMA1 delivers higher power, CAN FD, and superior EMC performance; versus TLE9472ESXUMA1, it omits PN functionality - simplifying firmware and reducing system-level wake coordination overhead.
Availability
TLE9471ESXUMA1 is available at Aetrix Electronics and suitable for HVAC ECU, Light Control Unit (LCU), water pump, and seat belt pretensioner applications requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.
Supply support for TLE9471ESXUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and R&D infrastructure.
The TLE9471ESXUMA1 belongs to Infineon's Lite CAN SBC family - designed specifically for cost-optimized, scalable automotive body electronics where integration of power, communication, and safety functions reduces board space and BOM count.
FAQ
What is the maximum allowable input voltage for TLE9471ESXUMA1?
The absolute maximum input voltage at VBB is 36 V, but functional operation is specified from 4.5 V to 28 V per ISO 16750-2. During load-dump events, the device withstands transient spikes up to 36 V for ≤400 ms without latch-up or damage, provided external TVS clamping is implemented per Infineon's recommended layout.
Does TLE9471ESXUMA1 support CAN Partial Networking (PN)?
No, TLE9471ESXUMA1 does not support CAN Partial Networking. It is a non-PN variant within the Lite CAN SBC family. For PN capability, Infineon offers the TLE9472ESXUMA1, which shares identical pinout and most features but adds selective wake-up filtering and PN frame recognition logic in the CAN controller interface.
How is the watchdog timeout configured?
The watchdog timeout is configured via SPI register writes to the WDT_CFG register (address 0x14), selecting one of eight preset timeout values ranging from 1.6 ms to 16.4 s. A window watchdog mode is enabled by setting the WDW_EN bit, requiring consecutive service pulses within a defined time window to prevent reset assertion.
Can the GPIO pin be used simultaneously as both wake input and high-side switch?
No - the GPIO pin supports only one function at a time, selected via SPI configuration register GPIO_CFG (address 0x2A). It cannot operate concurrently as wake input and high-side switch. Function reconfiguration requires SPI write and subsequent mode transition (e.g., Normal → Stop → Normal) to take effect, as documented in Section 5.1.1.1 of the datasheet.
TLE9471ESXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- Lite SBC
- Package/Case:
- 24-TSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- System Basis Chip (SBC)
- Applications:
- CAN
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TSDSO-24-1
- Grade:
- Automotive
- Qualification:
- AEC-Q100
TLE9471ESXUMA1 FAQ
1.How can I place an order for TLE9471ESXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE9471ESXUMA1 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 TLE9471ESXUMA1 reliable?
The price and inventory of TLE9471ESXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE9471ESXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE9471ESXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE9471ESXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE9471ESXUMA1?
TLE9471ESXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE9471ESXUMA1 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 TLE9471ESXUMA1?
For technical support, including TLE9471ESXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE9471ESXUMA1 requirements.
6.How does Aetrix verify that TLE9471ESXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE9471ESXUMA1 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 TLE9471ESXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE9471ESXUMA1?
All TLE9471ESXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE9471ESXUMA1, 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 TLE9471ESXUMA1 part is unused and in its original packaging.
Return procedure for TLE9471ESXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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