Specialized ICs

TLE9461ESXUMA1

TLE9461ESXUMA1 - OPTIREG Lite SBC, 5V LDO + CAN FD | Infineon

The Infineon TLE9461ESXUMA1 is an OPTIREG Lite System Basis Chip (SBC) integrating a 5 V microcontroller supply LDO with a CAN FD transceiver and a watchdog, housed in a 24-pin PG-TSDSO-24-1 exposed-pad power package. Designed for automotive CAN applications, the TLE9461ES provides a regulated 5 V/250 mA LDO rail, a CAN FD transceiver compliant with ISO 11898-1, and a window watchdog for microcontroller supervision. 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.