Infineon Technologies TLE9262QXXUMA2

Overview

TLE9262QXXUMA2 from Infineon Technologies is an automotive System Basis Chip (SBC) integrating dual low-dropout voltage regulators (5.0 V/150 mA and 3.3 V/50 mA), HS-CAN transceiver supporting CAN FD, LIN transceiver, four high-side switches (HS1–HS4), two high-voltage wake inputs (WK1/WK2), watchdog, reset, and fail-safe supervision. It serves as central power management and communication interface in body control modules for 12 V vehicle electrical systems.

For engineers reviewing the TLE9262QXXUMA2 datasheet, TLE9262QXXUMA2 pinout, TLE9262QXXUMA2 application, or TLE9262QXXUMA2 equivalent, key selection criteria include CAN FD/LIN co-integration, dual LDO output stability under load transients, high-side switch current limiting (1.8 A typ.), wake input voltage tolerance (up to 28 V), and fail-safe state machine behavior across SBC modes (Normal, Stop, Sleep, Fail-Safe).

Technical Context

This SBC implements a deterministic finite-state machine with seven operational modes (Init, Normal, Stop, Sleep, Restart, Fail-Safe, Development), each governing regulator enablement, transceiver activity, switch control, and wake response. The CAN transceiver supports dominant timeout, bus clamping, and wake detection compliant with ISO 11898-2:2013 and CAN FD physical layer requirements.

The LIN transceiver meets ISO 17987-2/ISO 17987-4 specifications, including flash programming via LIN, slope selection for EMI reduction, and receive-only mode for diagnostics. Voltage supervision includes independent monitoring of VCC, VS, and external regulator feedback, triggering reset or fail outputs on violation.

Key Specifications

Pinout & Package

Package: PG-VQFN-48-19 (4.0 mm × 4.0 mm, 0.4 mm pitch, exposed thermal pad). Pin count: 48 terminals. Pin functions validated per Infineon TLE9262QX Data Sheet Rev. 1.1 (2014-09-26), Sections 3.1–3.2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive SBC applications.

Compared with MC33903 and ISL78228, TLE9262QXXUMA2 uniquely integrates CAN FD, LIN, dual LDOs, and four high-side switches in a single AEC-Q100 Grade 1 package-reducing interconnect complexity and enabling compact, functionally complete body domain controllers.

Availability

TLE9262QXXUMA2 is available at Aetrix Electronics and suitable for body control modules, door control units, roof modules, and seat control units requiring stable component supply, automotive qualification, and long-term lifecycle support.

Supply support for TLE9262QXXUMA2 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 power management, automotive electronics, and security solutions, with global manufacturing and R&D infrastructure.

The TLE9262QXXUMA2 belongs to Infineon's TLE926x mid-range System Basis Chip family, designed specifically for cost-optimized, ASIL-B capable body electronics applications requiring integrated power, communication, and load driving in compact packages.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The TLE9262QXXUMA2 has a maximum junction temperature of +150 °C, validated per AEC-Q100 stress test conditions. Thermal design must maintain θ_JA ≤ 45 K/W in typical PCB layouts with 2-layer copper and thermal vias under 1.8 A HS-switch load and full regulator output. Derating curves in Section 4.3 confirm safe operation up to ambient +125 °C with proper heatsinking.

Does the CAN transceiver support both classical CAN and CAN FD simultaneously?

Yes-the integrated HS-CAN transceiver supports bit rates up to 5 Mbit/s and is fully compliant with ISO 11898-2:2013 and ISO 11898-5:2018, enabling seamless transition between classical CAN (up to 1 Mbit/s) and CAN FD frames on the same physical bus without hardware change.

How is the watchdog timeout configured, and can it be disabled?

Timeout is set via SPI-configurable registers controlling window width and lower/upper bounds; default factory setting is 100 ms. The watchdog cannot be fully disabled in production mode-only reconfigured or temporarily paused during debug via Development Mode entry sequence defined in Section 5.1.7.

Are the high-side switches compatible with PWM dimming for LED applications?

Yes-each HSx supports PWM input with frequency up to 2 kHz and duty cycle resolution of 0.1%, as specified in Section 9.2.5. Internal current limiting and thermal shutdown prevent damage during PWM-driven inrush, and open-load detection remains active during modulation.