Infineon Technologies TLE9262QXXUMA1

Overview

TLE9262QXXUMA1 from Infineon Technologies is a 48-pin automotive-grade system basis chip (SBC) integrating a 5V/150mA LDO, two high-side switches, one low-side switch, LIN 2.2A transceiver, and watchdog timer - designed for body control modules in 12V/48V dual-battery vehicle architectures.

For engineers reviewing the TLE9262QXXUMA1 datasheet, TLE9262QXXUMA1 pinout, TLE9262QXXUMA1 application, or TLE9262QXXUMA1 equivalent, key selection criteria include integrated LIN transceiver compliance, dual-supply monitoring capability, programmable reset delay, and ASIL-B functional safety support per ISO 26262.

Technical Context

This SBC operates across -40°C to +150°C ambient temperature with input voltage range of 4.5 V to 28 V (V_BAT) and 4.5 V to 52 V (V_EXT). It implements SPI-controlled configuration of output drivers, fault reporting via dedicated FAULT pin, and internal thermal shutdown at 175°C.

The integrated LIN transceiver supports dominant timeout, bus short-to-battery detection, and automatic wake-up on LIN bus activity. The watchdog features windowed timing with external enable and independent clock source for fail-safe reset generation.

Key Specifications

Pinout & Package

48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad (EP), RoHS-compliant, AEC-Q100 Grade 0 qualified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar system basis chip applications.

Compared with TLE9263QXXUMA1, this part trades CAN FD capability for LIN integration and lower system cost; versus MC33816AELR2, it adds 48V support and dual-supply monitoring critical for mild-hybrid architectures.

Availability

TLE9262QXXUMA1 is available at Aetrix Electronics and suitable for body control modules, lighting control units, seat control units, and engine bay auxiliary controllers requiring stable component supply under AEC-Q100 Grade 0 conditions.

Supply support for TLE9262QXXUMA1 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 manufacturing and R&D centers.

The TLE926x family targets automotive body electronics, delivering integrated power, communication, and safety functions to reduce system complexity and accelerate ASIL-B compliant design cycles.

FAQ

What is the maximum continuous current rating for HSD1 and HSD2?

HSD1 and HSD2 each support 1.5 A continuous current at T_A = 25°C with derating to 0.8 A at T_A = 125°C. Current limit is set internally at 2.5 A typical, with fast overcurrent shutdown (< 2 µs) and automatic retry after thermal recovery.

Does the TLE9262QXXUMA1 support LIN sleep mode and local wake-up?

Yes - the integrated LIN transceiver supports Sleep Mode with < 10 µA quiescent current and local wake-up via bus activity detection. It complies with LIN specification requirements for wake-up pulse recognition and automatic transition to active mode within 150 µs.

Can the watchdog timer be disabled after initialization?

No - the watchdog is permanently enabled after power-on reset. However, its window timing and timeout duration are fully programmable via SPI, and the WDI pin allows external MCU override of the watchdog refresh cycle during debug or safe-mode operation.

Is the exposed thermal pad (EP) required to be soldered to PCB ground?

Yes - the EP must be connected to a solid thermal pad on the PCB tied to GND for electrical reference and thermal dissipation. Minimum recommended copper area is 120 mm² with ≥4 thermal vias (0.3 mm diameter) to inner ground plane to maintain T_J ≤ 150°C at full load.