Infineon Technologies TLE9844QXXUMA1

Overview

TLE9844QXXUMA1 from Infineon Technologies is a 32-bit Arm® Cortex®-M0 automotive microcontroller integrating LIN transceiver, one high-side and two low-side power switches, 64 KB flash (with emulated 4 KB EEPROM), 4 KB RAM, and dual ADC subsystems (8-bit ×7 + 10-bit ×13 channels). It operates from 3.0 V to 28 V supply and supports cyclic wake-up, stop mode with sense, and LIN bootstrap loader - designed for window lift actuation control in passenger vehicles.

For engineers reviewing the TLE9844QXXUMA1 datasheet, TLE9844QXXUMA1 pinout, TLE9844QXXUMA1 application, or TLE9844QXXUMA1 equivalent, key selection criteria include integrated LIN PHY compliance, on-die voltage supervision (VBAT_SENSE, VS, VDDEXT), PWM-capable low-side switch timing resolution, and AEC-Q100 Grade-1 qualification for under-hood motor control.

Technical Context

The device implements a dedicated SCU-PM (System Control Unit – Power Modules) for coordinated control of its high-side (HS1) and dual low-side (LS1, LS2) switches, each supporting PWM modulation and overcurrent protection. Its LIN interface complies with ISO 17987-4 and supports slave node operation with automatic baud rate detection.

Two independent ADC subsystems serve distinct roles: an 8-bit ADC supervises system voltages (VBAT, VS, VDDP) and die temperature, while a 10-bit ADC digitizes 6 analog inputs, 4 HV MON signals, and battery sense - all synchronized to PWM events for motor current sampling.

Key Specifications

Pinout & Package

VQFN-48-37 package (7 mm × 7 mm, 0.5 mm pitch) with wettable flank terminations for automated optical inspection. Thermal pad exposed on underside for enhanced heat dissipation in motor drive applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLE9844QXXUMA1, TLE9854QX offers expanded connectivity and processing headroom at higher cost and power, while MC9S12VR64 demands more external components and lacks integrated safety features - making TLE9844QXXUMA1 optimal for new single-motor LIN nodes requiring minimal BOM and proven qualification.

Availability

TLE9844QXXUMA1 is available at Aetrix Electronics and suitable for window lift control, seat position adjustment, roof panel actuation, and power sunshade applications requiring stable component supply across automotive production lifecycles.

Supply support for TLE9844QXXUMA1 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 R&D and wafer fabrication infrastructure.

The MOTIX™ TLE984x product line targets highly integrated automotive body electronics, delivering single-chip LIN motor controllers that replace discrete MCU + transceiver + driver combinations for cost- and space-constrained actuators.

FAQ

Does TLE9844QXXUMA1 support LIN 2.2A physical layer compliance?

Yes, the integrated LIN transceiver meets ISO 17987-4:2016 Class A specifications, including bus fault tolerance up to ±40 V, slew rate control, and wake-up pulse detection per LIN specification. It supports both master and slave modes, though typical use is as a slave node in body control networks.

What is the maximum PWM frequency supported by the low-side switches?

The LS1 and LS2 outputs support PWM frequencies up to 25 kHz with configurable dead-time insertion and slew rate limiting. This enables smooth motor control while minimizing electromagnetic interference in sensitive cabin environments, and is synchronized to the 10-bit ADC for precise current sampling.

Can the on-chip 4 KB emulated EEPROM retain data after 100,000 write cycles?

No - the emulated EEPROM resides in flash memory and is rated for 100,000 erase/write cycles per sector, but actual endurance depends on wear-leveling implementation in firmware. The 100TP (100 time programmable) memory block provides guaranteed 100 writes for critical calibration data such as motor offset values.

Is thermal pad soldering required for functional operation?

Yes - the exposed thermal pad on the VQFN-48-37 package must be soldered to a PCB copper pour for thermal conduction. Without proper thermal pad connection, junction temperature exceeds safe limits under sustained 1 A load conditions, triggering thermal shutdown and compromising AEC-Q100 reliability requirements.