The TLE4473GV55-2 is a monolithic integrated voltage regulator specifically designed for automotive applications. Manufactured by Infineon Technologies, this regulator is a key component in providing a stable and reliable power supply for various electronic control units (ECUs) within a vehicle.

Applications:

• Engine Management Systems: Provides regulated voltage for engine control units.
• Transmission Control Units: Powers the electronic components of automatic transmissions.
• Body Control Modules: Regulates voltage for systems like lighting, wipers, and door locks.
• Anti-lock Braking Systems (ABS): Supplies power to the ABS control unit.
• Electronic Power Steering (EPS): Powers the EPS system's control circuitry.

Features:

• Output Voltage: 5V with high accuracy.
• Low Dropout Voltage: Ensures stable regulation even with low input voltage.
• Overvoltage Protection: Protects the load against excessive input voltage.
• Short-Circuit Protection: Shuts down the output in case of a short circuit.
• Over Temperature Protection: Protects the regulator from thermal overload.
• Reverse Polarity Protection: Prevents damage if the input voltage is connected with reverse polarity.
• Reset Function: Provides a reset signal to the microcontroller in case of undervoltage or overvoltage conditions.
• Enable Function: Allows external control of the regulator's operation.

Benefits:

• Reliable Power Supply: Provides a stable and accurate 5V supply, ensuring proper operation of critical automotive electronics.
• Protection Against Fault Conditions: Integrated protection features prevent damage to the regulator and the connected load.
• Enhanced System Reliability: The reset function ensures that the microcontroller is properly initialized after a fault condition.
• Automotive Grade: Designed and tested to meet the stringent requirements of automotive applications.
• Compact Design: Allows for easy integration into space-constrained automotive ECUs.

Additional Details:

The TLE4473GV55-2 typically comes in a PG-DSO-14 package. It is designed to operate over a wide temperature range, making it suitable for harsh automotive environments. The device's low quiescent current consumption helps to minimize battery drain. It also includes a watchdog function that monitors the microcontroller's activity and triggers a reset if the microcontroller fails to respond within a specified time. This feature enhances the overall system reliability by preventing the microcontroller from becoming stuck in an error state.