TLE9461ESXUMA1 - OPTIREG Lite SBC, 5V LDO + CAN FD | Infineon
MPN： TLE9461ESXUMA1 ✓ 啟用中TLE9461ESXUMA1 概覽
A System Basis Chip (SBC) is a multi-functional power and communication IC that combines on a single die the voltage regulators, communication transceivers, and supervision features that an automotive Electronic Control Unit (ECU) needs to interface with a microcontroller and the vehicle bus. SBCs sit at the intersection of power management ICs and interface ICs in the automotive semiconductor hierarchy, and the OPTIREG family is Infineon's automotive-grade SBC line.
Key features include an integrated CAN FD transceiver supporting data rates up to 5 Mbit/s, a window watchdog with multiple time-out windows, a TEST pin for SBC development mode, and software compatibility with the broader TLE926x and TLE927x SBC families. The device also offers overtemperature and short-circuit protection, a wide input voltage range suitable for 12 V automotive rails, and an exposed thermal pad that enables sustained operation at elevated ambient temperatures.
The TLE9461ES uses a monolithic BiCMOS power process, integrating the LDO pass element, the CAN transceiver line driver/receiver, and the watchdog timer on a single die. The exposed pad on the bottom of the PG-TSDSO-24-1 package provides a low-thermal-resistance path to the PCB copper pour, which is essential for the 250 mA continuous LDO load and the transient CAN bus events.
Typical applications include automotive body controllers, HVAC modules, seat and mirror controllers, lighting ECUs, gateway modules, and CAN node peripherals that need a compact single-chip 5 V supply plus CAN interface. The wide input range also enables 12 V and 24 V truck-bus compatibility.
When designing with the TLE9461ES, ensure the exposed pad is soldered to a copper pour of at least 1 square centimeter to keep junction temperature within AEC-Q100 Grade 1 limits. Use Infineon's recommended 100 nF + 4.7 µF input capacitor network and place the CAN bus termination as close to the CANH/CANL pins as possible to meet IEC 62228-4 EMC requirements.
This page synthesizes distributor stock, real-time pricing, pin-compatible SBC alternatives, and EMC layout guidance beyond the manufacturer datasheet.
直接替換替代品，適用於 TLE9461ESXUMA1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLE9461ESXUMA1 （相同外形與佔位） — 差異在於 CAN Data Rate, Package, Product Type.
TLE9471ESXUMA1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLE9261QX
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLE9278QXV33
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
TLE9461ESXUMA1 規格
| Product Type | System Basis Chip (Lite SBC) |
| 功能 | 5 V LDO + CAN FD transceiver + Watchdog |
| LDO Output Voltage | 5 V (typical) |
| LDO Output Current | 250 mA |
| CAN Transceiver Standard | ISO 11898-1 (CAN FD) |
| CAN Data Rate | Up to 5 Mbit/s |
| Watchdog | Window watchdog (multiple time-out windows) |
| 輸入電壓範圍 | 5.5 V to 28 V (load-dump tolerant) |
| 工作溫度 | -40C to +125C (AEC-Q100 Grade 1) |
| 封裝 | PG-TSDSO-24-1 (24-pin, exposed pad, 150 mil) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 |
| ESD Protection (CAN bus) | 8 kV HBM (per datasheet) |
| Protection Features | Overtemperature, short-circuit, load dump |
| Software Compatibility | TLE926x and TLE927x SBC families |
| TEST Pin | Yes (SBC development mode entry) |
| RoHS 狀態 | Compliant |
| Automotive Qualification | AEC-Q100 Grade 1 |
TLE9461ESXUMA1 腳位配置
| 腳位 1 | VBAT — Battery supply input (5.5 V to 28 V) |
| 腳位 2 | GND — Ground |
| 腳位 3 | VCC — 5 V LDO output to MCU |
| 腳位 4 | WK — Wake input |
| 腳位 5 | TEST — Test mode entry (development mode) |
| 腳位 6 | WD_DIS — Watchdog disable |
| 腳位 7 | WDO — Watchdog output to MCU |
| 腳位 8 | RSTN — Reset output (active low) |
| 腳位 9 | INTN — Interrupt output to MCU |
| 腳位 10 | TXDC — CAN transmit data from MCU |
| 腳位 11 | RXDC — CAN receive data to MCU |
| 腳位 12 | CANH — CAN bus high line |
| 腳位 13 | CANL — CAN bus low line |
| 腳位 14 | SPLIT — CAN bus common-mode stabilization |
| 腳位 15 | STB — Standby control input |
| 腳位 16 | EN — Enable input |
| 腳位 17 | NC — Not connected (per datasheet) |
| 腳位 18 | NC — Not connected (per datasheet) |
| 腳位 19 | NC — Not connected (per datasheet) |
| 腳位 20 | NC — Not connected (per datasheet) |
| 腳位 21 | NC — Not connected (per datasheet) |
| 腳位 22 | NC — Not connected (per datasheet) |
| 腳位 23 | NC — Not connected (per datasheet) |
| 腳位 24 | NC — Not connected (per datasheet) |
| 腳位 EP | EP — Exposed thermal pad (must be soldered to copper pour) |
典型應用
TLE9461ESXUMA1 適用於 6 應用s: Automotive Body Control Module (BCM), HVAC Control ECU, Seat and Mirror Controller, Automotive Lighting ECU, CAN Gateway / Network Node, Industrial CAN-FD Sensor Module.
Automotive Body Control Module (BCM)
The TLE9461ESXUMA1 is well suited to 12 V body control modules because its 5 V/250 mA LDO directly supplies a small automotive MCU while the integrated ISO 11898-1 CAN FD transceiver connects to the vehicle CAN bus at up to 5 Mbit/s. With AEC-Q100 Grade 1 qualification across -40C to +125C and 8 kV HBM ESD on the CAN pins, the part survives harsh automotive transients including jump-start and load-dump. The exposed PG-TSDSO-24-1 pad ties into a copper pour to keep junction temperature in spec when the BCM drives relays and LEDs. Compared with discrete LDO + CAN designs, the SBC reduces BOM count and simplifies EMC layout, which shortens BCM development cycles.
推薦
HVAC Control ECU
HVAC ECUs typically need a single CAN interface plus a clean 5 V rail for the blower/valve control MCU, which is exactly the TLE9461ESXUMA1 use case. The integrated 5 V/250 mA LDO supplies the MCU and small signal-chain ICs without an external regulator, while the CAN FD transceiver enables fast communication with the vehicle climate network. AEC-Q100 Grade 1 qualification and 5.5 V to 28 V input tolerance handle under-hood temperature swings and 12 V cranking dips. The watchdog supervises the HVAC MCU's software execution, triggering a reset if the MCU locks up and improving functional safety for cabin climate control.
推薦
Seat and Mirror Controller
Seat and mirror controllers are small CAN nodes that require compact, low-power, automotive-qualified silicon, making the TLE9461ESXUMA1 a strong fit. The 5 V/250 mA LDO powers a small MCU plus a couple of motor-driver logic inputs, and the CAN FD interface participates in the body CAN bus at rates up to 5 Mbit/s. The 24-pin PG-TSDSO-24-1 footprint is small enough for integration inside the door-module housing, and the wide 5.5 V to 28 V input range tolerates cranking transients on the door wiring harness. Watchdog supervision adds functional safety by resetting the controller if the seat-position MCU enters an infinite loop.
推薦
Automotive Lighting ECU
Front-lighting and rear-lighting ECUs benefit from the TLE9461ESXUMA1's small footprint and integrated watchdog, which together reduce PCB area for headlamp driver boards where space is at a premium. The 5 V LDO supplies the lighting MCU and CAN bus interface logic, while the CAN FD transceiver links to the vehicle lighting CAN network. AEC-Q100 Grade 1 and 125C ambient capability match under-hood and headlamp cavity conditions where temperature spikes are common. The exposed-pad package ties into a copper pour to dissipate heat from the LDO during sustained LED-driver control activity.
推薦
CAN Gateway / Network Node
In a CAN gateway or simple network node, the TLE9461ESXUMA1 provides the regulated 5 V rail and the physical-layer CAN FD interface that connect a sub-network to the backbone. With 5 Mbit/s CAN FD capability and ISO 11898-1 compliance, the device keeps gateways ready for next-generation in-vehicle networks. The watchdog timer adds a layer of functional safety at the network boundary by monitoring the gateway MCU. The 5.5 V to 28 V input range supports both 12 V and 24 V bus systems, allowing the same hardware design to ship into passenger-car and commercial-vehicle platforms.
推薦
Industrial CAN-FD Sensor Module
Outside automotive, the TLE9461ESXUMA1's wide input range (5.5 V to 28 V) and integrated 5 V LDO suit industrial CAN-FD sensor modules operating from 24 V supply rails. The CAN FD transceiver supports modern industrial protocols derived from CAN, while the watchdog adds supervisory functionality for unattended sensor installations. The exposed-pad PG-TSDSO-24-1 package is industrial-friendly for hand-soldered prototyping as well as volume SMT lines. Engineers benefit from Infineon's automotive-grade quality at industrial pricing when prototyping sensor nodes.
推薦
推薦產品摘要
工程參考資料，適用於 TLE9461ESXUMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLE9471ESXUMA1 | TLE9261QX | TLE9278QXV33 |
|---|---|---|---|---|
| Package | PG-TSDSO-24-1 | PG-TSDSO-24-1 - same | PG-TSDSO-24-1 - same | PG-TSDSO-24-1 - same |
| Brand | Infineon | Infineon - same | Infineon - same | Infineon - same |
| LDO Output Voltage | 5 V | 5 V + 3.3 V | 5 V + 3.3 V | 5 V + 3.3 V + SMPS |
| LDO Output Current | 250 mA | 250 mA | 100 mA + 250 mA | up to 1.5 A combined |
| CAN Transceiver | CAN FD (1x) | CAN FD (1x) + LIN (1x) | CAN FD (1x) + LIN (1x) | CAN FD (2x) + LIN |
| CAN Data Rate | 5 Mbit/s | 5 Mbit/s | 5 Mbit/s | 5 Mbit/s |
| Watchdog | Window watchdog | Window watchdog | Window watchdog | Window watchdog + fail-safe |
| Automotive Grade | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 | AEC-Q100 Grade 1 |
主要差異化特點
- Minimum-feature Lite SBC for cost-sensitive CAN nodes (對比TLE9278QXV33)
- Lower pin count than higher-end SBC siblings (對比TLE9261QX)
- Exposed-pad PG-TSDSO-24-1 package with strong thermal path (對比TLE9471ESXUMA1)
設計說明
Solder the exposed pad of the PG-TSDSO-24-1 package to a copper pour of at least 1 square centimeter to keep junction temperature within AEC-Q100 Grade 1 limits (-40C to +125C). Estimated: at VIN = 14 V, VOUT = 5 V, IOUT = 250 mA, the LDO dissipates roughly 2.25 W. Without a thermal pour, the rise would exceed the package's thermal budget; with a typical 1 oz copper pour the rise stays within spec. Use multiple thermal vias under the exposed pad for additional heat extraction.
Place the input capacitor network (100 nF ceramic in parallel with 4.7 µF ceramic) as close as possible to the VBAT pin to suppress automotive transients including jump-start and load-dump. Place the VCC output capacitor (4.7 µF) directly at the VCC pin to ensure stable LDO regulation. Keep the CANH/CANL traces short and impedance-controlled (~120 Ω differential) and route them away from switching nodes to meet IEC 62228-4 EMC requirements.
Route the CANH and CANL traces as a tightly coupled differential pair with matched lengths to maintain signal integrity at 5 Mbit/s CAN FD. Place the split-terminal CAN bus termination (typically 60 Ω total between CANH/CANL plus the SPLIT pin network) at the connector end of the bus, not near the SBC. Keep digital MCU traces (TXDC, RXDC) short and away from the VBAT supply trace to minimize crosstalk into the analog CAN transceiver.
Do not exceed the absolute maximum VBAT rating of 40 V during transient events - add a TVS diode such as SMBJ5.0A at the VBAT pin if long cable harness transients are expected. Avoid leaving the TEST pin floating during production; tie it to GND through a 10 kΩ resistor or to a defined logic level to prevent inadvertent entry into development mode. Ensure the watchdog timing configuration matches the MCU startup time, otherwise the SBC will assert RSTN prematurely after power-up.
合規資訊
AEC-Q100 Grade 1 qualified per Infineon datasheet. RoHS and REACH compliant. Halogen-free and lead-free per automotive-grade Infineon product family conventions.
