Infineon Technologies TLE8088EMXUMA1

Overview

TLE8088EMXUMA1 from Infineon is an engine management IC for small-displacement internal combustion engines, integrating a 5 V ±2% / 250 mA voltage regulator, K-line transceiver, two low-side drivers (2.6 A inductive and 3 A resistive), watchdog/reset logic, and embedded overtemperature/overcurrent/open-load diagnostics. It serves as the core power and communication interface in one-cylinder motorcycle ECU designs.

For engineers reviewing the TLE8088EMXUMA1 datasheet, TLE8088EMXUMA1 pinout, TLE8088EMXUMA1 application, or TLE8088EMXUMA1 equivalent, key selection criteria include its AEC-qualified PG-SSOP-24 exposed-pad package, -40°C to +150°C operating range, integrated K-line physical layer, dual-channel diagnostic low-side drive capability, and Smart Power Technology-based fault protection architecture.

Technical Context

The TLE8088EMXUMA1 implements Infineon's Smart Power Technology with monolithically integrated bipolar-CMOS-DMOS (BCD) process, enabling co-location of analog regulation, digital control logic, and high-current power stages on a single die. Its voltage regulator delivers stable 5 V ±2% output up to 250 mA with ceramic capacitor support down to 470 nF.

It features independent functional blocks: the K-line transceiver (TX/RX/KIO pins) operates autonomously from reset/watchdog signals; low-side drivers OUT1 and OUT2 each include dedicated INx control inputs, ST status reporting, and per-channel open-load/short-to-GND/off-state diagnosis; NRO provides open-drain reset output triggered by V5DD threshold crossing with hysteresis and glitch immunity.

Key Specifications

Pinout & Package

Package: PG-SSOP-24 with exposed thermal pad (must be soldered to GND plane).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLF35584ESV33 and MC33816AEKR2, the TLE8088EMXUMA1 uniquely combines K-line integration, ±2% 5 V regulation, AEC-Q100 Grade 0 rating, and dual-diagnostic low-side drivers in a single PG-SSOP-24 package - making it the only drop-in solution for cost-sensitive, space-constrained motorcycle ECU designs requiring native ISO 9141-2 diagnostics.

Availability

TLE8088EMXUMA1 is available at Aetrix Electronics and suitable for motorcycle ECU design, small-engine diagnostic tools, telematics gateways, and off-highway equipment control modules requiring stable component supply and long-term industrial availability.

Supply support for TLE8088EMXUMA1 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 manufacturing and quality certification aligned to IATF 16949.

The TLE8088EMXUMA1 belongs to Infineon's Smart Power family, engineered specifically for cost-optimized, highly integrated engine management in small-displacement gasoline engines - emphasizing diagnostic completeness, thermal robustness, and protocol-native communication.

FAQ

What is the maximum continuous current rating for OUT1 and OUT2?

OUT1 supports up to 2.6 A continuous current for inductive loads (e.g., fuel injectors, ignition coils) with built-in overtemperature and overcurrent protection. OUT2 supports up to 3.0 A for resistive loads (e.g., glow plugs, heaters), also with thermal and current limiting. Both channels include off-state open-load and short-to-GND diagnostics verified per datasheet Section 6.2.

Does the TLE8088EMXUMA1 require external components for K-line communication?

No external transceiver or protection components are required. The IC integrates full ISO 9141-2 K-line physical layer functionality on pins KIO, TX, and RX. A single 120 Ω termination resistor between KIO and ground is recommended per ISO standard, but no level-shifting, ESD protection, or bus driver ICs are needed.

How does the watchdog function interact with the reset output (NRO)?

The watchdog (WDI/WDE) and reset (NRO) operate independently: NRO responds solely to V5DD voltage threshold crossings with hysteresis and glitch filtering, while the watchdog generates internal system resets if pulses are missed. Neither signal disables the low-side drivers or K-line transceiver - all functional blocks remain operational during watchdog timeout or reset assertion.

Can the exposed thermal pad be left unconnected?

No. The exposed pad must be soldered to a PCB ground plane with ≥4 thermal vias (0.3 mm diameter, 0.8 mm pitch) to achieve specified R_thJC = 6.3 K/W. Leaving it unconnected degrades thermal performance, risks junction temperature exceedance above 150°C, and voids AEC-Q100 qualification - per Package Outline documentation (Section 9) and thermal resistance characterization (Table 3).