Infineon TLE4296GV50: A Comprehensive Technical Overview of the 5V Low-Drop Voltage Regulator

The Infineon TLE4296GV50 is a monolithic integrated low-drop voltage regulator designed to deliver a fixed, precisely regulated 5V output. As a critical component in power management systems, it is engineered to meet the demanding requirements of automotive and industrial applications, where reliability, efficiency, and robustness are paramount.

Core Functionality and Key Features

At its core, the TLE4296GV50 provides a 5V ±2% output accuracy at currents up to 250 mA from an input voltage range of 5.5V to 42V. Its defining characteristic is its low dropout voltage, typically 200 mV at full load (250 mA), which maximizes efficiency and minimizes power dissipation, especially when the input voltage is close to the output level. The device incorporates a wide array of built-in protection features, including short-circuit protection, current limitation, and overtemperature shutdown, ensuring safe operation under fault conditions. Furthermore, its very low quiescent current in standby mode makes it suitable for battery-powered applications requiring always-on functionality.

Advanced Functionality: Enable and Reset

Beyond basic regulation, the TLE4296GV50 offers advanced control and monitoring. An enable input allows for external switching of the regulator, facilitating power management strategies to reduce system-wide energy consumption. A highly valuable feature for microcontroller-based systems is the integrated reset circuit. This circuit monitors the output voltage and generates a reset signal for the microcontroller if the output voltage drops below a defined threshold, ensuring a controlled and safe startup and shutdown sequence.

Robustness for Demanding Environments

The regulator is specifically hardened for the challenging electrical environments found in automotive electronics. It exhibits excellent immunity to load dump transients (per ISO 7637-1) and features reverse polarity protection, safeguarding the IC and the downstream circuitry. Its ability to operate over a junction temperature range of -40°C to 150°C underscores its suitability for under-the-hood applications and harsh industrial settings.

Application Spectrum

The TLE4296GV50 is ideal for powering sensors, microcontrollers, and other core logic components in a diverse range of systems. Its primary applications include:

Automotive Body Control Modules (BCMs)

Engine Management Systems

Industrial Control Units (PLCs)

Consumer Electronics

ICGOODFIND Summary

The Infineon TLE4296GV50 stands out as an exceptionally robust and feature-rich 5V low-dropout regulator. Its combination of high accuracy, comprehensive protection mechanisms, integrated reset generation, and resilience against automotive transients makes it a superior and reliable choice for designers building critical systems where power integrity is non-negotiable.

Keywords: Low-Dropout Regulator, Automotive Grade, Reset Circuit, Load Dump Protection, 5V Regulation