Infineon Technologies TLE8458GV33XUMA2

Overview

TLE8458GV33XUMA2 from Infineon Technologies is an automotive-grade LIN transceiver with integrated 3.3 V low-dropout voltage regulator (LDO), designed for microcontroller power supply and LIN bus communication in body electronics systems. It delivers 50 mA regulated output, supports LIN 2.1 compliance, operates across 7–27 V battery input, and achieves 8 µA quiescent current in Stop Mode.

For engineers reviewing the TLE8458GV33XUMA2 datasheet, TLE8458GV33XUMA2 pinout, TLE8458GV33XUMA2 application, or TLE8458GV33XUMA2 equivalent, key selection criteria include integrated LDO output voltage (3.3 V), bus wake-up capability, thermal shutdown thresholds (150–200 °C), EN/WK pin control logic, and AEC-Q100 qualification for under-hood deployment.

Technical Context

The device integrates a LIN physical layer transceiver and a monolithic 3.3 V LDO on a single Smart Power Technology (SPT®) die. Its mode controller implements five states-Standby, Normal (with Slope/Flash submodes), Stop, and Sleep-with deterministic transitions triggered by EN pin level, local WK pin edge, or LIN bus activity.

Bus protection includes short-to-ground and short-to-VBAT tolerance on the LIN pin; ESD robustness reaches ±10 kV HBM on LIN/WK/VS pins. The LDO features active filtering (CVCC ≥ 470 nF, ESR < 6 Ω at 10 kHz) and disables automatically in Sleep Mode to minimize leakage.

Key Specifications

Pinout & Package

Package: PG-DSO-8-16 (8-pin exposed pad SOIC variant, RoHS-compliant, AEC-Q100 qualified).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LIN transceiver + regulator applications.

Compared with TLIN1029DRBR, TLE8458GV33XUMA2 offers double LDO current and 60% lower Stop Mode current; versus TLE7259-3GE, it consolidates two chips into one while maintaining pin compatibility and adding integrated power management.

Availability

TLE8458GV33XUMA2 is available at Aetrix Electronics and suitable for body control modules, seat position memory systems, roof modules, and trunk latch actuators requiring stable component supply across automotive production lifecycles.

Supply support for TLE8458GV33XUMA2 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 automotive, power management, and security ICs, with global manufacturing and AEC-Q100 validation infrastructure.

The TLE8458 family belongs to Infineon's automotive LIN transceiver product line, engineered specifically for integration into body electronics nodes where space, power efficiency, and robustness in harsh environments are critical.

FAQ

What is the minimum VS supply voltage required for Normal Operation Mode?

The TLE8458GV33XUMA2 requires a minimum VS supply of 7 V to enter and sustain Normal Operation Mode, as specified in the Functional Range table (P_4.2.3). Below 7 V, the device remains in Standby or may reset; operation down to 5.5 V is permitted only in Extended Supply Range with potential parameter deviations.

How does the Software Flash Mode differ from Normal Slope Mode?

Software Flash Mode enables high-speed LIN bus programming by disabling slope control on the TxD driver, allowing faster edge rates for bootloader communication. Normal Slope Mode maintains controlled dV/dt for EMC compliance during standard data transmission, as defined in section 5.2.2.1 and 5.2.2.2 of the datasheet.

Can the VCC pin be used to power external components beyond the MCU?

Yes - the VCC pin delivers up to 50 mA at 3.3 V, sufficient to power small peripherals such as LIN-compatible sensors (e.g., temperature or position ICs) or level-shifters. However, total load must remain within 50 mA and CVCC ≥ 470 nF must be placed directly between VCC and GND to maintain stability.

Is the TLE8458GV33XUMA2 compatible with LIN 2.2A or LIN 2.2B specifications?

The device is explicitly certified to LIN 2.1 (per Overview and section 7.1.3), with timing parameters aligned to that standard. While backward-compatible with LIN 2.0, it does not meet LIN 2.2A/B requirements for enhanced error detection or extended checksum modes, as those were introduced post-2014 and not validated in the Rev. 1.1 datasheet.