Infineon Technologies TLE8080EMXUMA1

Overview

TLE8080EMXUMA1 from Infineon is an AEC-qualified engine management IC for small-displacement internal combustion engines, integrating a 5 V ±2% / 250 mA regulator, ISO 9141 K-line transceiver, SPI interface, configurable variable reluctance sensor (VRS) front-end, and five protected low-side drivers - including two 2.6 A inductive load switches, two 350 mA inductive load switches, and one 3 A resistive load switch. It serves as the core power and communication hub in one-cylinder motorcycle ECU designs.

For engineers reviewing the TLE8080EMXUMA1 datasheet, TLE8080EMXUMA1 pinout, TLE8080EMXUMA1 application, or TLE8080EMXUMA1 equivalent, key selection criteria include its integrated K-line compliance, dual-threshold reset with glitch immunity, VRS input sensitivity tuning, channel-specific diagnosis (open-load/short-to-GND), and PG-SSOP24 thermal performance under 150°C junction conditions.

Technical Context

The TLE8080EMXUMA1 implements Smart Power Technology with embedded protection logic across all five output stages: overtemperature shutdown, current limiting, and off-state diagnostics per channel. Its VRS interface supports adjustable gain and hysteresis for crank/cam position sensing, while the K-line transceiver meets ISO 9141-2 physical layer timing and voltage thresholds.

Reset supervision uses a dual-threshold comparator (VRT = 4.55 V rising, 4.35 V falling) with programmable delay (tRD = 10 ms typ.) and glitch rejection (tRR = 10 µs). The 5 V regulator employs a charge-pump-assisted LDO architecture enabling stable operation down to 470 nF ceramic output capacitance at full 250 mA load.

Key Specifications

Pinout & Package

Package: PG-SSOP24 (Plastic Small Outline Package, 24-pin, exposed thermal pad). Pin pitch: 0.65 mm; body size: 7.2 × 5.3 mm; thermal pad must be externally connected to PGND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar engine management applications.

Compared with TLE8080-2EM and TLE8080-3EM, the TLE8080EMXUMA1 provides the tightest reset hysteresis (4.55 V / 4.35 V) and shortest guaranteed reset delay (10 ms), making it optimal for fast-booting MCUs and thermally constrained ECU layouts where timing predictability is essential.

Availability

TLE8080EMXUMA1 is available at Aetrix Electronics and suitable for motorcycle ECU design, small-engine diagnostic tools, and aftermarket ignition modules requiring stable component supply, AEC-Q100 compliance, and integrated K-line/VRS functionality.

Supply support for TLE8080EMXUMA1 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 industrial control solutions, with global R&D and manufacturing infrastructure.

The TLE8080EMXUMA1 belongs to Infineon's Smart Power family, designed specifically for cost-sensitive, thermally demanding engine control units in 1-cylinder gasoline and diesel applications.

FAQ

What is the maximum continuous current rating for OUT5?

OUT5 is rated for 3 A continuous DC current into resistive loads, with built-in overtemperature and overcurrent protection that disables the channel if junction temperature exceeds 165 °C or current exceeds 4.5 A peak for >100 µs. It is not rated for inductive loads - those are assigned to OUT1–OUT4.

Can the VRS interface accept signals from both passive and active VR sensors?

Yes - the VRS interface supports passive variable reluctance sensors (e.g., crankshaft position sensors) via differential AC-coupled input on VR_IN1/VR_IN2, and also accommodates active Hall-effect or magneto-resistive sensors through configurable bias and gain settings accessible via SPI registers.

Is the K-line transceiver fully compliant with ISO 9141-2 without external components?

Yes - the internal K-line circuitry meets all ISO 9141-2 requirements for dominant/recessive voltage levels, slew rate, and bus arbitration timing. Only external 120 Ω termination resistor and optional ESD protection diodes are recommended; no level-shifting or driver ICs are needed.

How does the watchdog function interact with the WD_DIS pin?

The watchdog timer resets the device if not refreshed within ~1.6 s. Holding WD_DIS high (≥2.0 V) disables the watchdog entirely - both timeout detection and reset generation - allowing use in systems where software-based supervision is handled externally or not required.