The TLE4268 is a monolithic integrated low-dropout voltage regulator manufactured by Infineon Technologies (formerly Siemens). It is specifically designed for automotive applications where a stable and regulated voltage supply is crucial for the reliable operation of electronic control units (ECUs) and other automotive components. It offers various protection features and is optimized for harsh automotive environments.

Applications

• Automotive ECUs (Electronic Control Units): Powering microcontrollers, sensors, and other components within engine management systems, transmission control units, and body control modules.
• Automotive Body Electronics: Supplying a stable voltage for lighting control, window lift systems, and central locking systems.
• Automotive Infotainment Systems: Regulating power for audio amplifiers, navigation systems, and display units.
• Industrial Control Systems: Providing a regulated voltage source for sensors, actuators, and microcontrollers in industrial automation equipment.
• General Purpose Power Supplies: Can be used in other applications requiring a stable and protected voltage supply.

Features

• Low Dropout Voltage: Maintains a stable output voltage even with a low input voltage, maximizing battery life in automotive applications.
• Overvoltage Protection: Protects the regulator and connected devices from damage due to voltage spikes.
• Reverse Polarity Protection: Prevents damage from incorrect battery connections.
• Short Circuit Protection: Protects the regulator and connected devices from damage due to short circuits.
• Overtemperature Protection: Prevents overheating and potential damage to the regulator.
• Wide Input Voltage Range: Operates with a wide range of input voltages, accommodating various automotive battery conditions.
• Low Quiescent Current: Minimizes current consumption when not actively supplying power.

Benefits

• Enhanced System Reliability: Protection features ensure reliable operation in harsh automotive environments.
• Extended Battery Life: Low dropout voltage and low quiescent current contribute to extended battery life.
• Simplified System Design: Integrated protection features reduce the need for external components.
• Robust Performance: Designed to withstand the demanding conditions of automotive applications.

Additional Details

The TLE4268 is available in various package options. It typically has a fixed output voltage (e.g., 5V) or an adjustable output voltage. The device often includes a reset function for the connected microcontroller. The TLE4268 is designed to meet the stringent requirements of automotive quality standards. Detailed specifications, including input voltage range, output current capability, dropout voltage, and operating temperature range, can be found in the product datasheet. The device also features a diagnostic output pin for fault detection and reporting.