The TLE4242EJ is a monolithic integrated low-dropout voltage regulator designed and manufactured by Infineon Technologies. It's specifically tailored for automotive applications, providing a stable 5V output voltage with a high degree of accuracy and robustness. The regulator incorporates various protection features to ensure reliable operation in harsh automotive environments.

Applications

• Automotive Engine Control Units (ECUs): Provides a stable power supply for microcontroller-based engine management systems.
• Automotive Body Control Modules (BCMs): Powers various functions within the vehicle's body, such as lighting, wipers, and door locks.
• Automotive Transmission Control Units (TCUs): Supplies regulated voltage to the electronic components of automatic transmissions.
• Automotive Instrument Clusters: Powers the electronic displays and gauges in the instrument cluster.
• Automotive Sensor Systems: Provides a reliable power source for various sensors within the vehicle, such as temperature, pressure, and position sensors.

Features

• Low-Dropout Voltage Regulator: Maintains a regulated output voltage even with a low input voltage, ensuring stable operation during voltage dips.
• 5V Fixed Output Voltage: Provides a precise and stable 5V output voltage.
• Output Current Capability: Can deliver a specified output current, suitable for powering various electronic components.
• Overvoltage Protection: Protects the regulator and connected devices from damage due to excessive input voltage.
• Short-Circuit Protection: Shuts down the regulator output in case of a short circuit to prevent damage.
• Overtemperature Protection: Protects the regulator from overheating by shutting down the output when the temperature exceeds a safe limit.
• Reverse Polarity Protection: Prevents damage to the regulator if the input voltage is connected with reverse polarity.

Benefits

• Reliable Power Supply: Provides a stable and regulated 5V power supply for automotive electronics.
• Robust Protection Features: Safeguards the regulator and connected devices from various fault conditions.
• Improved System Stability: Ensures consistent performance of automotive systems even during voltage fluctuations.
• Extended Component Lifespan: Protection features help prolong the lifespan of connected electronic components.
• Simplified System Design: Integration of protection features simplifies the design process and reduces the need for external protection components.

Additional Details

The TLE4242EJ typically operates with an input voltage range of 6V to 45V. The dropout voltage is very low, ensuring the output remains stable even with input voltage dips. The device is available in a small surface-mount package suitable for automotive applications. The operating temperature range is designed to withstand harsh automotive conditions, typically from -40°C to +150°C. The quiescent current is low, minimizing power consumption. The output voltage is highly accurate, typically within a few percent of the nominal value. The regulator includes a reset function, providing a reset signal to the connected microcontroller upon startup or fault conditions.