Infineon Technologies TLE9261BQXXUMA2

Overview

TLE9261BQXXUMA2 from Infineon Technologies is an automotive-qualified System Basis Chip (SBC) integrating dual low-dropout voltage regulators (5 V/250 mA main, 5 V/100 mA auxiliary), a high-speed CAN FD transceiver (up to 5 Mbit/s per ISO 11898-2:2016), four 7 Ω high-side switches, two HV GPIOs, three HV wake inputs, and SPI-based supervision. It serves as the central power management and communication hub in body control modules for 12 V vehicle electrical systems.

For engineers reviewing the TLE9261BQXXUMA2 datasheet, TLE9261BQXXUMA2 pinout, TLE9261BQXXUMA2 application, or TLE9261BQXXUMA2 equivalent, this device supports fail-safe state machine operation across Normal, Stop, Sleep, and Fail-Safe modes; enables cyclic wake via dedicated HV inputs; provides configurable external PNP regulator support; and delivers diagnostic feedback through interrupt and reset outputs.

Technical Context

The TLE9261BQXXUMA2 implements a deterministic state machine with six operational modes-Init, Normal, Stop, Sleep, Restart, and Fail-Safe-each governed by SPI-configurable thresholds and monitored supply rails. Its CAN FD transceiver supports Partial Networking and Wake-on-CAN with bus dominant clamping and TXD time-out protection.

All four high-side switches feature independent overcurrent, open-load, and over/undervoltage detection with PWM-capable timing control. The three HV wake inputs (WK1–WK3) support both edge-triggered wake events and alternate analog measurement functions (WK1/WK2 only), enabling flexible system-level power sequencing and diagnostics.

Key Specifications

Pinout & Package

Package: PG-VQFN-48 (7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar System Basis Chip applications.

Compared with TLE9261BQXXUMA2, TLE9262BQX trades one high-side switch for LIN PHY integration-ideal for cost-sensitive door nodes-while MC33816AER2 emphasizes 3.3 V precision and watchdog granularity at the expense of HV wake capability and external regulator flexibility.

Availability

TLE9261BQXXUMA2 is available at Aetrix Electronics and suitable for Body Control Modules, Passive Keyless Entry systems, and HVAC actuator control requiring stable component supply, AEC-Q100 qualification, and long-term automotive lifecycle support.

Supply support for TLE9261BQXXUMA2 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 ICs, and security solutions, with global R&D and manufacturing infrastructure.

The OPTIREG™ SBC family targets automotive body electronics, delivering integrated power, communication, and supervision functions to reduce system complexity and improve functional safety compliance.

FAQ

What is the maximum allowable input voltage on VCC?

The absolute maximum rating for VCC is 40 V, but the functional operating range is 4.5 V to 28 V per the datasheet. Operation above 28 V risks triggering undervoltage lockout or damaging internal regulators. For sustained 12 V vehicle battery applications-including load dump spikes-the device relies on external TVS protection, as TLE9261BQXXUMA2 itself does not integrate load dump clamping.

Does TLE9261BQXXUMA2 support CAN FD Classic arbitration?

Yes-it fully supports CAN FD with Classical arbitration (up to 1 Mbit/s) and FD data phase (up to 5 Mbit/s) per ISO 11898-2:2016. The transceiver implements automatic bit rate switching, recessive-to-dominant transition timing compliance, and bus fault recovery without host intervention. Partial Networking mode remains active during both arbitration and data phases.

How is open-load detection implemented on HS1–HS4?

Each high-side switch performs continuous current sensing during ON-state using internal sense FETs. Open-load is detected when output current falls below 0.5 mA for >100 µs while the switch is enabled. Detection triggers SPI-accessible fault flags and optional interrupt assertion; no external components are required. The function remains active in Normal, Stop, and Sleep modes.

Can WK1 and WK2 be used simultaneously for analog measurement and wake-up?

No-WK1 and WK2 operate in mutually exclusive modes: either as digital wake inputs (edge-triggered) or as analog inputs (0–12 V range, 10-bit effective resolution). Mode selection is configured via SPI register bits before entering Sleep mode. Simultaneous wake and measurement is not supported; design must prioritize one function per input per power state.